WO2025051982A2 - Additifs à base d'acides aminés et compositions et procédés associés - Google Patents

Additifs à base d'acides aminés et compositions et procédés associés Download PDF

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Publication number
WO2025051982A2
WO2025051982A2 PCT/EP2024/075034 EP2024075034W WO2025051982A2 WO 2025051982 A2 WO2025051982 A2 WO 2025051982A2 EP 2024075034 W EP2024075034 W EP 2024075034W WO 2025051982 A2 WO2025051982 A2 WO 2025051982A2
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Prior art keywords
amino acid
formulation
dry weight
total dry
construction
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PCT/EP2024/075034
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WO2025051982A3 (fr
Inventor
Thomas Aberle
Paul Emmenegger
Erwin BÜHLER
Stefan Studer
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Celanese Switzerland AG
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Celanese Switzerland AG
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Publication of WO2025051982A2 publication Critical patent/WO2025051982A2/fr
Publication of WO2025051982A3 publication Critical patent/WO2025051982A3/fr
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C04B40/0042—Powdery mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00672—Pointing or jointing materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
    • C04B2111/00801—Membranes; Diaphragms
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/21—Efflorescence resistance
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials

Definitions

  • the present disclosure relates to amino acid additives and related compositions including, but not limited to, construction formulations (e.g., cements, mortars, plasters, and the like), redispersible polymer powder formulations, and polymer dispersions. Also included in the present disclosure are methods relating to the amino acid additive and correlated compositions.
  • Cementitious compositions are used in a variety of construction compositions like tile cements, mortars, plasters, and the like.
  • One important property for construction compositions that are used to join or adhere two structures together includes the length of time that the construction compositions can maintain an adhesive strength after being exposed to the environment. For example, after the application of the construction composition to a surface (e.g., a floor or slab), the surrounding air may cause reactions at the exposed surface of the construction composition that reduce the adhesive properties of the exposed construction composition. Then, the structure (e.g., a tile) applied thereto may not stick as well to the construction composition, which weakens the overall structure of the adhered structures.
  • Open time requirements are defined by the European Standard EN 12004 by means of adhesive pull strength values after defined laying times (or open times).
  • the open time is often shortened by undesirable skin formation on the surface of the construction formulation that prevents satisfactory wetting of the tiles even though the adhesive is still soft in the interior.
  • An open time of at least 30 minutes that maintains greater than 0.5 N/mm 2 in adhesive pull strength typically indicates a good construction formulation, especially a mortar for laying ceramic tiles.
  • the present disclosure relates to amino acid additives and related compositions including, but not limited to, construction formulations (e.g., cements, mortars, plasters, and the like), redispersible polymer powder formulations, and polymer dispersions.
  • Some embodiments of the present disclosure include a construction formulation comprising: an inorganic binder; a redispersible polymer powder; and 0.01 wt% to 2 wt% of an amino acid additive comprising an amino acid, based on a total dry weight of the construction formulation; wherein the construction formulation has an adhesive pull strength of greater than 0.5 N/mm 2 after 30 minutes of open time (EN 12004, after conditioning for 28 days at 23 °C ⁇ 2°C and 50% ⁇ 5% relative humidity). In some instances, the adhesive pull strength after 30 minutes of open time is greater by at least 10% relative to a comparable construction formulation without amino acid.
  • Some embodiments of the present disclosure include a use of an amino acid to increase an open time of a construction formulation (e.g., cement-based tile adhesive).
  • a construction formulation e.g., cement-based tile adhesive
  • Some embodiments of the present disclosure include a use of an amino acid to improve a wetting of a ceramic tile with a construction formulation (e.g., cement-based tile adhesive).
  • a construction formulation e.g., cement-based tile adhesive
  • Some embodiments of the present disclosure include a use of an amino acid to increase a processing time of a construction formulation (e.g., cement render and/or cement-based render in composite thermal insulation system).
  • a construction formulation e.g., cement render and/or cement-based render in composite thermal insulation system.
  • Some embodiments of the present disclosure include a redispersible polymer powder formulation comprising: 90 wt% to 99.9 wt% of a redispersible polymer powder, based on a total dry weight of the redispersible polymer powder formulation; and 0.1 wt% to 10 wt% of an amino acid additive comprising an amino acid, based on a total dry weight of the redispersible polymer powder formulation.
  • Some embodiments of the present disclosure include a polymer dispersion formed by radical emulsion polymerization, the polymer dispersion comprising: a polymer; and 0.1 wt% to 10 wt% of an amino acid additive.
  • Some embodiments of the present disclosure include an amino acid additive comprising: 20 wt% to 99 wt% of an amino acid, based on a total dry weight of the amino acid additive; and 1 wt% to 80 wt% of a polysaccharide-based polymer, based on a total dry weight of the amino acid additive.
  • the present disclosure relates to amino acid additives and related compositions including, but not limited to, construction formulations (e.g., cements, mortars, plasters, and the like), redispersible polymer powder formulations, and polymer dispersions. Also included in the present disclosure are methods relating to the amino acid additive and correlated compositions.
  • amino acid additives especially those comprising glycine, mitigate skin formation on construction formulations like cements, mortars, and plasters, which increases the open time of said construction formulations. This is especially advantageous in higher temperature and/or lower humidity locations where skin formation is of greater concern. As illustrated herein, the amino acid additives may greatly exceed the open times defined by EN 12004.
  • amino acid additives of the present disclosure may be included in low concentrations, which may minimally impact other physical properties of the construction formulations.
  • Amino acid additives of the present disclosure may comprise an amino acid and optionally a polysaccharide-based polymer, an efflorescence reducing additive, a filler, or any combination thereof.
  • the amino acid may include any amino acid.
  • the amino acid is a hydrophobic amino acid.
  • amino acids may include, but are not limited to, glycine, alanine, valine, leucine, isoleucine, proline, phenylalanine, methionine, tryptophan, the like, and any combination thereof.
  • the amino acid comprises one or more of: glycine, alanine, valine, leucine isoleucine, and methionine.
  • the amino acid comprises one or more of: glycine, alanine, and valine.
  • the amino acid comprises (or consists of) glycine.
  • the amino acid may comprise 80 wt% to 100 wt% of glycine, based on a total dry weight of the amino acid.
  • the amino acid may be present in the amino acid additive in an amount ranging from 1 wt% to 100 wt% (or from 1 wt% to 99 wt%, or from 20 wt% to 99 wt%, or from 50 wt% to 99 wt%, or from 1 wt% to 30 wt%, or from 25 wt% to 50 wt%, or from 30 wt% to 60 wt%, or from 50 wt% to 99 wt%, or from 50 wt% to 75 wt%, or from 70 wt% to 85 wt%, or from 80 wt% to 99 wt%, or from 80 wt% to 100 wt%), based on a total dry weight of the amino acid additive.
  • Polysaccharide-based polymers may include un-modified polysaccharides, polysaccharide ethers, the like, and any combination thereof.
  • examples of polysaccharide-based polymers may include, but are not limited to, starch (e.g., amylose and/or amylopectin), starch ether (e.g., amylose ether and/or amylopectin ether), cellulose, cellulose ether (e.g., carboxymethyl cellulose, methyl cellulose, ethylmethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, and/or hydroxypropyl cellulose), guar, guar ether, dextran, dextran ether, the like, and any combination thereof.
  • starch e.g., amylose and/or amylopectin
  • starch ether e.g., amylose ether and/or amylopectin ether
  • cellulose e.g.
  • the polysaccharide-based polymer may be present in the amino acid additive in an amount ranging from 1 wt% to 99 wt% (or from 1 wt% to 80 wt%, or from 1 wt% to 50 wt%, or from 1 wt% to 20 wt%, or from 15 wt% to 30 wt%, or from 25 wt% to 50 wt%, or from 50 wt% to 99 wt%, or from 50 wt% to 75 wt%, or from 70 wt% to 85 wt%, or from 80 wt% to 99 wt%), based on a total dry weight of the amino acid additive.
  • the amino acid additive may be devoid of a polysaccharide-based polymer.
  • efflorescence reducing agents may include, but are not limited to, a terpenoid, a resin acid, colophony, terpene resin, terpene-phenol resin, the like, and any combination thereof. Additional details regarding efflorescence reducing agents may be found in US Patent App. Pub. No. 2009/0223416, the entirety of which is incorporated by reference herein.
  • the efflorescence reducing additive may be present in the amino acid additive in an amount ranging from 0.1 wt% to 25 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 15 wt%, or from 5 wt% to 25 wt%), based on a total dry weight of the amino acid additive.
  • the amino acid additive may be devoid of an efflorescence reducing additive.
  • fillers may include, but are not limited to, carbonates (e.g., calcium carbonate, magnesium carbonate, limestone, dolomite, and/or chalk), silicates (e.g., quartz sand, marble sand, and/or silica sand), basalt, perlite, vermiculite, clay, lime hydrate, talc, mica, fumed silica, polystyrene granules, rubber granules, the like, and any combination thereof.
  • carbonates e.g., calcium carbonate, magnesium carbonate, limestone, dolomite, and/or chalk
  • silicates e.g., quartz sand, marble sand, and/or silica sand
  • the filler may be present in the amino acid additive in an amount ranging from 0.1 wt% to 90 wt% (or from 0.1 wt% to 80 wt%, or from 0.1 wt% to 5 wt%, or from 1 wt% to 20 wt%, or from 10 wt% to 40 wt%, or from 25 wt% to 50 wt%, or from 40 wt% to 80 wt%, or from 50 wt% to 90 wt%), based on a total dry weight of the amino acid additive.
  • the amino acid additive may be devoid of a filler.
  • the amino acid additive of the present disclosure may comprise from 1 wt% to 100 wt% of an amino acid, from 0 wt% to 99 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 90 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive of the present disclosure may comprise from 20 wt% to 100 wt% of an amino acid, from 0 wt% to 80 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 80 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive of the present disclosure may comprise from 50 wt% to 100 wt% of an amino acid, from 0 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive of the present disclosure may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive of the present disclosure may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide- based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive of the present disclosure may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0.1 to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • Subranges and compositions detailed above apply to each of the broader ranges and compositions in the foregoing amino acid additives compositions.
  • the amino acid additive may be a solid, a paste, or a fluid.
  • the amino acid additive may be in the form of a powder or particulate blend.
  • the amino acid additive may include a solvent that disperses and/or solvates the components of the amino acid additive.
  • solvents may include, but are not limited to, water, methanol, ethanol, the like, and any combination thereof.
  • the choice of solvent and/or blend of solvents should be chosen to not adversely interact with the components of the amino acid additive.
  • An amino acid additive may be in a pH range from 2 to 9 (or from 3 to 8, or from 4 to 7, or from 4 to 8), which again should be chosen to not adversely interact with the components of the amino acid additive.
  • a buffering agent may be used to facilitate maintaining a desired pH.
  • An amino acid additive comprising a solvent may have a solids content from 10 wt% to 90 wt% (or from 10 wt% to 50 wt%, or from 20 wt% to 60 wt%, or from 30 wt% to 70 wt%, or from 40 wt% to 80 wt%, or from 50 wt% to 90 wt%).
  • the present disclosure also relates to the use of the above-described amino acid additives in polymer dispersions prepared by radical emulsion polymerization.
  • pphm means parts per hundred monomer and is calculated on all monomers present in the dispersion (e.g., vinyl acetate, ethylene, and vinyl neodecanoate). Percentages may then be used to describe contents during post-addition or any step after the polymerization.
  • various ranges and sub ranges are provided, any values within the ranges as well as combinations of points within the ranges are specifically contemplated herein.
  • a polymer composition may be described herein using the chemical name of monomer(s), which is understood by those in the art that the polymer contains the polymerized form of each of the monomers.
  • a polymer of ethylene and vinyl acetate or an ethylene-vinyl acetate polymer refers to the product of polymerizing ethylene and vinyl acetate.
  • the polymer dispersions may comprise an amino acid additive of the present disclosure, polymer particles, and optionally other additives.
  • the polymer dispersions may be prepared using emulsion polymerization where the amino acid additive of the present disclosure may be added before, during, and/or after initiating polymerization.
  • the polymer dispersion described herein can be prepared using emulsion polymerization procedures and may also include a pre-charge and optionally a post-addition.
  • the basic preparation of polymer dispersions of this type is well known and has already been described in numerous instances and is therefore known to the skilled artisan. Such procedures are described, for example, in The U.S. Patent No. 5,633,334, and in the Encyclopedia of Polymer Science and Engineering, Vol. 8, p. 659 fif (1987). The disclosures of these publications are incorporated herein by reference in their entirety.
  • the polymerization may be carried out in any manner known per se in one, two, or more stages with different monomer combinations, giving copolymer dispersions having particles with homogeneous or heterogeneous (e.g., core shell or hemispheres) morphology.
  • Any reactor system such as batch, loop, continuous, cascade, etc., may be employed.
  • Examples of monomers may include, but are not limited to, vinyl ester (e.g., vinyl acetate, vinyl propionate, a C4 to C20 vinyl ester, and the like), ethylene, vinyl chloride, styrene, butadiene, acrylates (e.g., methyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, and the like), the like, and any combination thereof.
  • the vinyl ester monomer may comprise a C4 to C20 long chain that is linear and/or branched.
  • linear and branched vinyl esters may include, but are not limited to, vinyl butyrate, vinyl isobutyrate, vinyl benzoate, vinyl-2- ethyl-hexanoate, vinyl esters of an [alpha] -branched carboxylic acid having 5 to 11 carbon atoms in the acid moiety (e.g., versatic acids which form vinyl esters such as those sold as VeoVa 9, VeoVa 10, and VeoVa 11, including vinyl neodecanoate, and the vinyl esters of pivalic, 2-ethylhexanoic, lauric, palmitic, myristic, and stearic acid), and the like, and any combination thereof.
  • versatic acids which form vinyl esters such as those sold as VeoVa 9, VeoVa 10, and VeoVa 11, including vinyl neodecanoate
  • Examples of polymer produced from emulsion polymerization may include, but are not limited to, a poly(vinyl acetate), an ethylene-vinyl acetate copolymer, an ethylene-vinyl acetate- vinyl versatate copolymer, an ethylene vinyl acetate (meth) acrylate copolymer, an ethylene-vinyl acetate-vinyl chloride copolymer, a vinyl acetate-vinyl versatate copolymer, a vinyl acetate vinyl versatate (meth)acrylate copolymer, a vinyl versatate (meth)acrylate copolymer, a styrene acrylate copolymer, a styrene butadiene copolymer, the like, and any combination thereof.
  • the polymer may comprise from 60 wt% to 96 wt% vinyl acetate and from 4 wt% to 40 wt% ethylene.
  • the one or more monomers may be added all at once, continuously, or discontinuously.
  • a monomer pre-charge comprising from 10% to 80% (or from 15% to 75 %, or from 20% to 70%, or from 25% to 65%, or from 30% to 60%, or from 35% to 55%, or from 40% to 50%) of the total amount of monomers may be pre-charged to the reactor.
  • the pre-charge may also comprise a stabilizer in an amount from 3.0 pphm to 12.0 pphm (or from 4.0 pphm to 11.0 pphm, or from 5.0 pphm to 10.0 pphm, or from 6.0 pphm to 9.0 pphm, or from 7.0 pphm to 8.0 pphm).
  • the pre-charge may also comprise a surfactant in an amount from 3.0 pphm to 12.0 pphm (or from 4.0 pphm to 11.0 pphm, or from 5.0 pphm to 10.0 pphm, or from 6.0 pphm to 9.0 pphm, or from 7.0 pphm to 8.0 pphm).
  • the weight ratio of vinyl acetate first monomer to vinyl ester a second monomer in the pre-charge may range from 1 : 10 to 10: 1 (or from 1 :5 to 5: 1, or from 2:5 to 5:2, or from 3:5 to 5:3, or from 4:5 to 5:4, or approximately a 1 : 1 ratio).
  • the first monomer may be a vinyl ester like vinyl acetate
  • the second monomer may be ethylene.
  • the first monomer may be a vinyl ester like vinyl acetate
  • the second monomer may be a different vinyl ester like a C4 to C20 vinyl ester.
  • the pre-charge may comprise a first monomer (e.g., vinyl acetate) at a concentration from 5 pphm to 40 pphm (or from 10 pphm to 35 pphm, or from 15 pphm to 30 pphm, or from 20 pphm to 25 pphm).
  • the pre-charge may comprise a second monomer (e.g., C4 to C20 vinyl ester) at a concentration from 2 pphm to 20 pphm (or from 3 pphm to 18 pphm, or from 5 pphm to 16 pphm, or from 7 pphm to 14 pphm, or from 9 pphm to 12 pphm).
  • the pre-charge may comprise a total amount of monomers at a concentration from 7 pphm to 60 pphm (or from 13 pphm to 58 pphm, or from 15 pphm to 55 pphm, or from 18 pphm to 50 pphm, or from 20 pphm to 45 pphm, or from 25 pphm to 35 pphm).
  • the stabilizer may comprise polyvinyl alcohol, including combinations of polyvinyl alcohols having different degrees of hydrolysis and viscosity.
  • the stabilizer comprises a single polyvinyl alcohol.
  • the polyvinyl alcohol may have a degree of hydrolysis from 80 mol% to 98 mol% (or from 86 mol% to 90 mol%).
  • the polyvinyl alcohol may have a Hoppier viscosity from 2 mPa s to 30 mPa s (or from 2 mPa s to 6 mPa s, or from 5 mPa s to 15 mPa s, or from 10 mPa s to 30 mPa s).
  • the stabilizer includes at least two polyvinyl alcohols
  • at least one of the degree of hydrolysis and viscosity differ, for example, 1) a first polyvinyl alcohol has the same degree of hydrolysis but a different viscosity than a second polyvinyl alcohol, 2) a first polyvinyl alcohol the same viscosity but a different degree of hydrolysis than a second polyvinyl alcohol, or 3) a first polyvinyl alcohol has a different degree of hydrolysis and a different viscosity than a second polyvinyl alcohol.
  • the degree of hydrolysis and viscosity may be similarly selected.
  • the surfactant may include one or more ionic surfactants, one or more nonionic surfactants, or a combination thereof.
  • suitable ionic surfactants may include, but are not limited to, sodium, potassium, and ammonium salts of linear aliphatic carboxylic acids of chain length C12- C20, sodium hydroxy octadecanesulfonate, sodium, potassium, and ammonium salts of hydroxy fatty acids of chain length C12-C20 and their sulfonation and/or sulfation and/or acetylation products, alkyl sulfates, including those in the form of triethanolamine salts, alkyl(C10-C20) sulfonates, alkyl(C10-C20) aryl sulfonates, and their sulfonation products, lignosulfonic acid and its calcium, magnesium, sodium, and ammonium salts, resin acids, hydrogenated and dehydrogenated resin acids, and their
  • alkyl(C10-C20) aryl sulfonates such as alkylbenzenesulfonates, sodium or potassium alkyl sulfates such as sodium lauryl sulfate, and sodium, potassium or ammonium salts of sulfated C10-C16 alkyl ethoxylates with an EO degree between 1 and 30.
  • nonionic surfactants may include, but are not limited to, acyl, alkyl, oleyl, and alkylaryl ethoxylates. These products are commercially available, for example, under the name GENAPOL ⁇ , LUTENSOL® or EMULAN ⁇ .
  • ethoxylated mono-, di-, and tri-alkylphenols (EO degree: 3 to 50, alkyl substituent radical: C4 to Cl 2) and also ethoxylated fatty alcohols (EO degree: 3 to 80; alkyl radical: C8 to C36), especially C10-C14 fatty alcohol (3- 40) ethoxylates, C11-C15 oxo-process alcohol (3-40) ethoxylates, C16-C18 fatty alcohol (11-80) ethoxylates, Cl l oxo-process alcohol (3-40) ethoxylates, C13 oxo-process alcohol (3-40) ethoxylates, polyoxyethylenesorbitan monooleate with 20 ethylene oxide groups, copolymers of ethylene oxide and propylene oxide having a minimum ethylene oxide content of 10% by weight, the polyethylene oxide (4-40) ethers of oleyl alcohol, and the polyethene oxide (4-40) ethers of nony
  • the pre-charge may be supplied to the reactor as one charge or each component may be added separately.
  • the remaining amounts of monomer may be introduced to the reactor.
  • the remaining amount of monomer may be added from 20% to 90% (or from 30% to 80%, or from 40% to 70%, or from 50% to 60%) of the total amount of monomer used in the polymerization.
  • at least a portion of the first monomer and at least a portion of the second monomer may be added to the pre-charge.
  • at least a portion of the first monomer may be added to the pre-charge, and the second monomer may not be added to the pre-charge.
  • no emulsifier is added at any point during the process described herein.
  • the total amount of redox initiator system prefferably included in the initial charge to the reactor at the beginning of the polymerization. In some embodiments, however, a portion of the initiator is included in the initial charge at the beginning, and the remainder is added after the polymerization has been initiated, in one or more steps or continuously.
  • exemplary redox initiators include tert-butyl hydroperoxide and/or hydrogen peroxide in combination with reducing agents, such as with sulfur compounds, an example being the sodium salt of hydroxymethanesulfinic acid, Briiggolit FF6 and FF7, Rongalit C, sodium sulfite, sodium disulfite, sodium thiosulfate, and acetone-bi sulfite adduct, or with ascorbic acid or with reducing sugars.
  • reducing agents such as with sulfur compounds, an example being the sodium salt of hydroxymethanesulfinic acid, Briiggolit FF6 and FF7, Rongalit C, sodium sulfite, sodium disulfite, sodium thiosulfate, and acetone-bi sulfite adduct, or with ascorbic acid or with reducing sugars.
  • the amount of the initiators or initiator combinations used in the process varies within what is usual for aqueous polymerization in heterophase systems. In general, the amount of initiator used will not exceed 5% by weight, based on the total amount of monomers to be polymerized. In some embodiments, it is preferable that the amount of initiators used is from 0.05 to 2 % by weight, based on the total amount of the monomers to be polymerized. In this context it is possible for the total amount of initiator to be included in the initial charge at the beginning of the polymerization process, however, it may be preferable in alternative approaches that only a portion of the initiator is included in the initial charge at the beginning. The remainder of the initiator is added after the polymerization has been initiated, in one or more steps or continuously. The addition may be made separately or together with other components, such as emulsifiers.
  • the molecular weight of the polymer dispersion may be adjusted by adding small amounts of one or more molecular weight regulator substances. These regulators, as they are known, are generally used in an amount of up to 2% by weight, based on the total amount of monomers to be polymerized. As regulators, it is possible to use all of the substances known to the skilled artisan. In some embodiments, preferable regulators include organic thio compounds, silanes, allyl alcohols, and aldehydes. [0053] In some embodiments, the polymer dispersion may include a range of additional substances, such as plasticizers, preservatives, agents for adjusting the pH, and/or defoamers, for example.
  • additional substances such as plasticizers, preservatives, agents for adjusting the pH, and/or defoamers, for example.
  • the polymerization temperature generally ranges from 20°C to 150°C (or from 50°C to 120°C).
  • the polymerization generally takes place under pressure if appropriate, from 2 to 150 bar (or from 5 bar to 120 bar, or from 10 bar to 100 bar).
  • the vinyl acetate, vinyl ester, stabilizer package and other monomers can be polymerized in an aqueous medium under pressures up to 150 bar in the presence of one or more initiators.
  • the aqueous reaction mixture in the polymerization vessel can be maintained by a suitable buffering agent at a pH of 3 to 7.
  • the manner of combining the several polymerization ingredients can vary widely.
  • an aqueous medium containing at least part of the stabilizer package can be initially formed in a polymerization vessel with the various other polymerization ingredients being added to the vessel thereafter (but following the pre-charge).
  • odorous substances such as residual monomers and other volatile organic constituents
  • Removing odorous substances can be done in a manner known per se, physically for example, by distillative removal (in particular via steam distillation) or by stripping with an inert gas.
  • distillative removal in particular via steam distillation
  • stripping with an inert gas.
  • the polymerization is typically carried out at a pH in the region of less than or equal to 9.
  • a buffer system such as sodium acetate, for example, or phosphate buffer systems, may be used.
  • a pH range of 2 to 9 is favorable, for example, a pH range from 3 to 8.
  • the polymer dispersion has a glass transition temperature of -40°C to 40°C (or -40°C to -10°C, or -30°C to 0°C, or -20°C to 10°C, or from -10°C to 20°C, or from 0°C to 30°C, or from 10°C to 40°C).
  • Tg of each of the polymers produced (and thus the emulsion polymers) can be both calculated empirically and determined experimentally. Empirical calculation can be accomplished by use of the Fox equation (T. G. Fox, BulL Am. Phy. Soc. (ser II) 1, 123 (1956), and Ullmann's Encyclopedia of Industrial Chemistry, VCH, Weinheim, Vol. 19, 4th Ed., Publishing House Chemistry, Weinheim, 1980, pp. 17-18) as follows:
  • 1/ g X a /T gA +X b /T gB +• • • +X n /T gn
  • X a and Xb are the mass fractures of monomers A and B employed (in % by weight)
  • T g A and T g B are the glass transition temperatures T g in Kelvin of the respective homopolymers of A and B.
  • Another method of determining the glass transition temperatures T g of the copolymers is by experimental determination, for example, by means of differential scanning calorimetry (‘DSC’) wherein the midpoint temperature according to ASTM D3418-82 should be used.
  • DSC differential scanning calorimetry
  • Experimental values so determined may not correspond exactly to the calculated values since the calculation is based on empirical foundations and does not agree to the same positive degree for all monomer combinations.
  • additional effects such as molecular weight, a possible block structure of the copolymers, a certain heterogeneity and the influence of the stabilization system can affect glass transition temperature T g . If major differences exist between the calculated and experimental values, the experimental values are presumed valid.
  • the polymer dispersion as provided herein may possess a broad particle size distribution.
  • the particle size distribution corresponding to the emulsifier stabilized copolymer dispersion herein may only have one maximum. In some embodiments, the distribution may have two or more maximum and be a multimodal distribution of the emulsifier stabilized copolymer dispersion. In some embodiments, it may be important that the overall particle size distribution for the emulsifier stabilized copolymer dispersion be broad.
  • the emulsifier stabilized copolymer dispersion has a mean particle size (based on number distribution) of at least 100 nm (or at least 250 nm, or at least 500 nm, or at least 750 nm, or at least 1000 nm, or from 100 nm to 5000 nm, or from 100 nm to 750 nm, or from 500 nm to 2000 nm, or from 1000 nm to 3000 nm, or from 2500 to 5000 nm).
  • the solids fraction of the polymer dispersions of the invention with broad particle size distribution is typically from 30 wt% to 70 wt% (or from 40% to 60%).
  • the solids fraction of the polymer dispersion is based on the overall solids content within the polymer dispersion before the amino acid additive is added to the polymer dispersion.
  • the polymer dispersion as provided herein may have a viscosity from 100 mPa-s to 20,000 mPa-s (or from 100 mPa-s to 10,000 mPa-s, or from 500 mPa-s to 7,500 mPa-s, or from 500 mPa-s to 5,000 mPa-s, or from 1,000 mPa-s to 2,500 mPa-s).
  • the polymer dispersions may be prepared using emulsion polymerization where the amino acid additive of the present disclosure may be added before, during, and/or after initiating polymerization.
  • the amino acid additive used in the polymer dispersion may comprise from 20 wt% to 100 wt% of an amino acid, from 0 wt% to 80 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 80 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the polymer dispersion may comprise from 50 wt% to 100 wt% of an amino acid, from 0 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the polymer dispersion may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the polymer dispersion formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the polymer dispersion may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0.1 to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • Subranges and compositions detailed above apply to each of the broader ranges and compositions in the foregoing amino acid additives compositions.
  • the amino acid additive may be present in the polymer dispersion in an amount ranging from 0.1 wt% to 10 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the polymer dispersion.
  • the amino acid additive may be included in a polymer dispersion in an amount sufficient to provide for an amino acid concentration from 0.1 wt% to 10 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the polymer dispersion.
  • Redispersible Polymer Powder Formulation Comprising the Amino Acid Additives
  • the present disclosure also relates to the use of the above-described amino acid additives in redispersible polymer powder formulations.
  • the redispersible polymer powder formulations may comprise an amino acid additive of the present disclosure, a redispersible polymer powder, and optionally other additives.
  • the amino acid additive used in the redispersible polymer powder formulation may comprise from 20 wt% to 100 wt% of an amino acid, from 0 wt% to 80 wt% of a polysaccharide- based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 80 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the redispersible polymer powder formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 0 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the redispersible polymer powder formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the redispersible polymer powder formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the redispersible polymer powder formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0.1 to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • Subranges and compositions detailed above apply to each of the broader ranges and compositions in the foregoing amino acid additives compositions.
  • the amino acid additive may be present in the redispersible polymer powder formulation in an amount ranging from 0.1 wt% to 10 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the redispersible polymer powder formulation.
  • the amino acid additive may be included in a redispersible polymer powder formulation in an amount sufficient to provide for an amino acid concentration from 0.1 wt% to 10 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the redispersible polymer powder formulation.
  • a redispersible polymer powder is generally a polymer emulsion that has been converted to a powder so that when mixed with water or other suitable solvent the powder is redispersed to a polymer emulsion with substantially the same properties (e.g., colloid size).
  • the primary components of a redispersible polymer powder may comprise a polymer, an emulsifier, and optionally emulsion stabilizers.
  • Other additives used to make polymer emulsions may remain after forming the redispersible polymer powder.
  • Said other additives are preferably 2 wt% or less (1 wt% or less, or 0.01 wt% to 0.5 wt%) cumulatively by total dry weight of the redispersible polymer powder.
  • the polymer is the polymer that was polymerized via emulsion polymerization.
  • examples of polymers of the redispersible polymer powder may include, but are not limited to, a poly(vinyl acetate), an ethylene-vinyl acetate copolymer, an ethylene-vinyl acetate-vinyl versatate copolymer, an ethylene vinyl acetate (meth)acrylate copolymer, an ethylene-vinyl acetate-vinyl chloride copolymer, a vinyl acetate-vinyl versatate copolymer, a vinyl acetate vinyl versatate (meth)acrylate copolymer, a vinyl versatate (meth)acrylate copolymer, a styrene acrylate copolymer, a styrene butadiene copolymer, the like, and any combination thereof.
  • the polymer may be present in the redispersible polymer powder in an amount ranging from 50 wt% to 99.99 wt% (or from 50 wt% to 75 wt%, or from 60 wt% to 85 wt%, or from 70 wt% to 95 wt%, or from 90 wt% to 99 wt%, or from 95 wt% to 99 wt%, or from 98 wt% to 99.99 wt%), based on a total dry weight of the redispersible polymer powder.
  • Emulsifiers may be anionic, nonionic, cationic, or amphoteric.
  • emulsifiers may include, but are not limited to, alkyl sulphonates, alkyl aryl sulphonates, alkyl sulphates, sulphates of hydroxyl alcanols, alkyl sulphonates, alkyl aryl di sulphonates, sulphonated fatty acids, sulphates of polyethoxylated alcanols, phosphates of polyethoxylated alcanols, sulfates of alkyl phenols, phosphates of alkyl phenols, esters of sulphosuccinic acid, quaternary alkyl ammonium salts, quaternary alkyl phosphonium salts, polyalkoxylates (e.g., adducts of 5 to 50 mole ethylene oxide and/or propylene oxide per mole of
  • emulsion stabilizers may include, but are not limited to, polyvinyl alcohol, partially saponified polyvinyl alcohols, polyvinyl pyrrolidone, the like, and any combination thereof.
  • the particles of the redispersible polymer powder may have a mean particle size (based on number distribution) of at least 10 pm (or 10 pm to 200 pm, or 50 pm to 150 pm, or 100 pm to 200 pm).
  • the redispersible polymer powder may be present in the redispersible polymer powder formulation in an amount ranging from 50 wt% to 99.99 wt% (or from 50 wt% to 75 wt%, or from 60 wt% to 85 wt%, or from 70 wt% to 95 wt%, or from 90 wt% to 99 wt%, or from 95 wt% to 99 wt%, or from 98 wt% to 99.99 wt%), based on a total dry weight of the redispersible polymer powder formulation.
  • the redispersible polymer powder may be produced from an emulsion having a solids content from 30 wt% to 70 wt% (or from 40 wt% to 60 wt%), based on a total weight of the emulsion.
  • the redispersible polymer powder may be produced by drying (e.g., spray drying, freeze drying, drying in a fluidized bed, roller drying, rapid drying, the like, and any combination thereof) the emulsion.
  • spray drying can be carried out in customary spray drying plants, with atomization being able to be carried out by means of single-fluid, two-fluid or multifluid nozzles or a rotary disc atomizer.
  • air, nitrogen or nitrogen enriched air may be employed as the drying gas, the inlet temperature of the drying gas generally not exceeding 200° C.
  • This inlet temperature preferably is from 110°C to 180°C (or from 140°C to 170°C).
  • the outlet temperature may generally be set in the range from 45°C to 120°C (or from 60°C to 90°C), depending on the plant, the glass transition temperature (Tg) of the polymer and the desired degree of drying.
  • Examples of the other additive may include, but are not limited to, suspension aids, thickening agents, parting agents, penetrating agents, wetting agents, thermal gelling agents, sizing agents, defoaming agents, foam suppressors, blowing agents, coloring agents, oxidation inhibitors, quenchers, antimicrobial agents, dispersants, antistatic agents, cross linking agents (to improve wet strength), dispersants, lubricants, plasticizers, pH regulators, flow modifiers, setting promoters, water-proofing agents, the like, and any combination thereof.
  • each other additive may individually be present in the redispersible polymer powder formulation from 0.01 wt% to 2 wt% (or from 0.01 wt% to 0.5 wt%, or from 0.1 wt% to 1 wt%, or from 0.5 wt% to 2 wt%).
  • a cumulative amount of the other additives in the redispersible polymer powder formulation may be from 0 wt% to 5 wt% (or from 0 wt% to 1 wt%, or from 0.1 wt% to 3 wt%, or from 1 wt% to 5 wt%).
  • the redispersible polymer powder formulation may be produced by mixing a redispersible polymer powder with the amino acid additive and the optional other additives, each in dry form.
  • the amino acid additive and the optional other additives may be added to the emulsion and then dried (e.g., via spray drying, freeze drying, drying in a fluidized bed, roller drying, rapid drying, the like, and any combination thereof).
  • a portion of the amino acid additive and/or the optional other additives may be added to the emulsion and then dried. The resulting dried powder may be mixed with the remaining portion of the amino acid additive and/or the optional other additives.
  • the redispersible polymer powder formulation may be used in a variety of applications including construction materials.
  • the present disclosure also relates to the use of the above-described amino acid additives in construction formulation that may advantageously have improved open times.
  • said construction formulations may include tile adhesives, thermal insulation mortars, levelling compounds, repair mortars, gypsum and/or lime and/or cement plasters, joint mortars, sealing slurries, smoothing compounds, wallpaper pastes, parquet adhesives, adhesives, powder paints, waterproofing mortars, membranes, external thermal insulation composite system(s) (ETICS), tile grouts, the like, and any combination thereof.
  • the construction formulation may comprise an amino acid additive of the present disclosure, a redispersible polymer powder, and a binder and optionally additives.
  • the amino acid additive may be incorporated into a construction formulation as an amino acid additive or as a portion of a redispersible polymer powder formulation.
  • the amino acid additive e.g., dry or dispersed in a solvent (e.g., water)
  • a redispersible polymer powder formulation comprising the amino acid additive may be prepared as described herein.
  • the powder e.g., dry or dispersed in a solvent (e.g., water)
  • a solvent e.g., water
  • the amino acid additive used in the construction formulation may comprise from 20 wt% to 100 wt% of an amino acid, from 0 wt% to 80 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 80 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the construction formulation may comprise from 50 wt% to 100 wt% of an amino acid, from 0 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the construction formulation may comprise from 20 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 10 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the construction formulation may comprise from 20 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0 wt% to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • the amino acid additive used in the construction formulation may comprise from 20 wt% to 100 wt% of an amino acid, from 1 wt% to 50 wt% of a polysaccharide-based polymer, from 0.1 wt% to 25 wt% of an efflorescence reducing additive, and from 0.1 to 50 wt% of a filler, each based on a total dry weight of the amino acid additive.
  • Subranges and compositions detailed above apply to each of the broader ranges and compositions in the foregoing amino acid additives compositions.
  • the amino acid additive may be present in the construction formulation in an amount ranging from 0.01 wt% to 2 wt% (or from 0.01 wt% to 0.1 wt%, or from 0.05 wt% to 1 wt%, or 0.1 wt% to 2 wt%), based on a total dry weight of the construction formulation.
  • the amino acid additive may be included in a construction formulation in an amount sufficient to provide for an amino acid concentration from 0.01 wt% to 2 wt% (or from 0.01 wt% to 0.1 wt%, or from 0.05 wt% to 1 wt%, or 0.1 wt% to 2 wt%), based on a total dry weight of the construction formulation.
  • the redispersible polymer powder may be present in the construction formulation in an amount ranging from 0.1 wt% to 25 wt% (or from 0.1 wt% to 5 wt%, or from 1 wt% to 15 wt%, or from 5 wt% to 25 wt%), based on a total dry weight of the construction formulation.
  • the redispersible polymer powder formulation may be included in a construction formulation in an amount sufficient to provide for a redispersible polymer powder concentration from 0.1 wt% to 25 wt% (or from 0.01 wt% to 1 wt%, or from 0.1 wt% to 5 wt%, or from 1 wt% to 15 wt%, or from 5 wt% to 25 wt%), based on a total dry weight of the construction formulation.
  • a redispersible polymer powder formulation comprising the amino acid additive may be included in a construction formulation in an amount sufficient to provide for a redispersible polymer powder concentration from 0.1 wt% to 25 wt% (or from 0.01 wt% to 1 wt%, or from 0.1 wt% to 5 wt%, or from 1 wt% to 15 wt%, or from 5 wt% to 25 wt%) and an amino acid concentration from 0.01 wt% to 2 wt% (or from 0.01 wt% to 0.1 wt%, or from 0.05 wt% to 1 wt%, or 0.1 wt% to 2 wt%), each based on a total dry weight of the construction formulation.
  • the construction formulation may comprise an inorganic binder.
  • Inorganic binders are inorganic compounds holding solid particles together in a coherent mass.
  • Examples of inorganic binders may include, but are not limited to, hydraulically setting binders, latent hydraulic binders, pozzolanic binders, non-hydraulic binders, the like, and any combination thereof.
  • hydraulically setting binders may include, but are not limited to, Portland cement (e.g., CEM I, EN 197-1), blended Portland cements (e.g., CEM II, CEM III, CEM IV, and/or CEM V (EN 197- 1)), aluminate cements, calcium aluminate cements (CAC), calcium-sulfo aluminate cements (CSA), fly ash, calcium phosphate cements, the like, and any combination thereof.
  • Portland cement e.g., CEM I, EN 197-1
  • blended Portland cements e.g., CEM II, CEM III, CEM IV, and/or CEM V (EN 197- 1
  • aluminate cements e.g., calcium aluminate cements (CAC), calcium-sulfo aluminate cements (CSA), fly ash, calcium phosphate cements, the like, and
  • Latent hydraulic binders harden by the addition of an activator, usually lime and water.
  • latent hydraulic binders may include, but are not limited to, fly ash, silico-calcareous cement, blastfurnace slag, the like, and any combination thereof.
  • Pozzolanic binders are siliceous or silico-aluminous compounds, or a combination thereof. Pozzolanic binders harden in the presence of dissolved Ca(OH)2.
  • Examples of pozzolanic binders may include, but are not limited to, microsilica (also referred to as silica-fume), metakaolin, vitrified calcium alumino-silicate (VCAS), ground recycled glass pozzolans, burnt shale, diatomaceous earth, moler, rice husk ash, air cooled slag, calcium metasilicate, volcanic slag, volcanic tuff, volcanic ash, trass, the like, and any combination thereof.
  • Non-hydraulic inorganic binders do not harden in the presence of excess water.
  • examples of non-hydraulic inorganic binders may include, but are not limited to, calcium sulfate hemihydrate, anhydrite, quicklime, hydrated lime, magnesia cements, the like, and any combination thereof.
  • the inorganic binder may be present in the construction formulation in an amount ranging from 5 wt% to 99 wt% (or from 5 wt% to 40 wt%, or from 25 wt% to 60 wt%, or from 45 wt% to 75 wt%, or from 60 wt% to 80 wt%, or from 75 wt% to 95 wt%, or from 80 wt% to 99 wt%), based on a total dry weight of the construction formulation.
  • the construction formulation may optionally include one or more additives.
  • additives for construction formulations may include, but are not limited to, fillers, hydrophobizing additives, superplasticizers, biocides, pigments, defoaming agents, the like, and any combination thereof.
  • fillers may include, but are not limited to, quartz sand, marble sand, calcium carbonate, limestone, dolomite, basalt, perlite, vermiculite, clay, lime hydrate, silica sand, chalk, talc, mica, fumed silica, polystyrene granules, rubber granules, and mixtures thereof.
  • fillers may be present in the construction formulation in an amount ranging from 1 wt% to 95 wt% (or from 1 wt% to 20 wt%, or from 10 wt% to 30 wt%, or from 20 wt% to 40 wt%, or from 30 wt% to 50 wt%, or from 40 wt% to 70 wt%, or from 50 wt% to 80 wt%, or from 60 wt% to 95 wt%), based on a total dry weight of the construction formulation.
  • the construction formulation may be devoid of fillers.
  • thickeners may include, but are not limited to, starch, starch ethers, cellulose ethers, guar ethers, welan gums, inorganic thickeners (e.g., clays), the like, and any combination thereof.
  • Cellulose ethers and the guar ethers are preferred and include alkyl ethers, hydroxyalkyl ethers, and/or carboxymethyl ethers.
  • Suitable alkyl groups include methyl, ethyl, propyl and/or C4- to C30- alkyl groups.
  • Suitable hydroxyalkyl groups include hydroxyethyl and/or hydroxypropyl groups.
  • the cellulose ethers or guar ethers have the additional advantage that they can further help to control mortar slurry properties including water demand, workability, open time and water retention during the application of the mortar slurry.
  • thickeners may be present in the construction formulation in an amount ranging from 0.1 wt% to 10 wt% (or from 0.1 wt% to 3 wt%, or from 1 wt% to 5 wt%, or from 3 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the construction formulation.
  • the construction formulation may be devoid of thickeners.
  • Hydrophobizing additives provide protection for the cured mortar against high surface tension fluids, in particular against water. Suitable hydrophobizing additives include organosilicon compounds, such as alkyl- trialkoxysilanes and/or dialkyldialkoxysilanes.
  • suitable alkyl groups include C6 to C12 alkyl groups.
  • suitable alkoxy groups include methoxy, ethoxy, propoxy and/or a butoxy group.
  • Further suitable hydrophobizing additives can be selected from fatty acids, fatty acid salts, and fatty acid derivatives.
  • hydrophobizing additives may be present in the construction formulation in an amount ranging from 0.01 wt% to 10 wt% (or from 0.01 wt% to 3 wt%, or from 1 wt% to 5 wt%, or from 3 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the construction formulation.
  • the construction formulation may be devoid of hydrophobizing additives.
  • Superplasticizers enable the production of cements, mortars, etc. with up to 40 % less water content. Suitable superplasticizers include naphthalene and/or naphthalene-based superplasticizers, melamine and/or melamine-based superplasticizers, lignosulfonates, and polycarboxylic acids.
  • superplasticizers may be present in the construction formulation in an amount ranging from 0.01 wt% to 10 wt% (or from 0.01 wt% to 3 wt%, or from 1 wt% to 5 wt%, or from 3 wt% to 7 wt%, or from 5 wt% to 10 wt%), based on a total dry weight of the construction formulation.
  • the construction formulation may be devoid of superplasticizers.
  • the construction formulations of the present disclosure may further include a solvent (e.g., water, methanol, ethanol, the like, and any combination thereof).
  • a solvent e.g., water, methanol, ethanol, the like, and any combination thereof.
  • the construction formulation may have a solids content from 30 wt% to 90 wt% (or from 30 wt% to 70 wt%, or from 40 wt% to 80 wt%, or from 50 wt% to 90 wt%, or from 60 wt% to 90 wt%).
  • the adhesive properties of the constructions formulations may be characterized by an adhesive pull strength relative to open time (EN 12004, after conditioning for 28 days at 23°C ⁇ 2°C and 50% ⁇ 5% relative humidity).
  • construction formulations described herein have an E-classification according to EN 12004, which have an adhesive pull strength of greater than 0.5 N/mm 2 through 30 minutes of open time.
  • the construction formulations comprising an amino acid additive of the present disclosure may have an open time of 30 minutes or greater that retains an adhesive pull strength of 0.5 N/mm 2 or greater (or 0.5 N/mm 2 or greater, or 0.6 N/mm 2 or greater, or 0.7 N/mm 2 or greater, or 0.8 N/mm 2 or greater, or 0.9 N/mm 2 or greater, or 1.0 N/mm 2 or greater, or 0.5 N/mm 2 to 1.5 N/mm 2 , 0.6 N/mm 2 to 1.5 N/mm 2 , 0.7 N/mm 2 to 1.5 N/mm 2 , 0.8 N/mm 2 to 1.5 N/mm 2 , 0.9 N/mm 2 to 1.5 N/mm 2 , 1.0 N/mm 2 to 1.5 N/mm 2 ).
  • the construction formulations comprising an amino acid additive of the present disclosure may retain an adhesive pull strength of 0.5 N/mm 2 or greater with an open time of 30 minutes or greater (40 minutes or greater, 50 minutes or greater, 60 minutes or greater, 70 minutes or greater, 80 minutes or greater, or 30 minutes to 120 minutes or greater, 40 minutes to 120 minutes or greater, 50 minutes to 120 minutes or greater, 60 minutes to 120 minutes or greater, 70 minutes to 120 minutes or greater, 80 minutes to 120 minutes or greater).
  • the use of the amino acid additive may increase the open time (time until the adhesive pull strength drops below 0.5 N/mm 2 ) of a construction formulation (e.g., cement-based tile adhesive) by at least 5 minutes (or at least 10 minutes, or 5 minutes to 30 minutes or more) compared to a comparable construction formulation (the same construction formulation but without the amino acid additive).
  • a construction formulation e.g., cement-based tile adhesive
  • the use of the amino acid additive may increase the adhesive pull strength of a construction formulation (e.g., cement-based tile adhesive) after 30 minutes of open time by at least 10% (or at least 15%, or 10% to 80) compared to a comparable construction formulation.
  • the use of the amino acid additive may improve a wetting of a ceramic tile with a construction formulation (e.g., cement-based tile adhesive) were the surface area wet after a 20 minute open time is at least 5% (or at least 10%, or 5% to 80%) more surface area compared to a comparable construction formulation.
  • the use of the amino acid additive may increase a processing time of a construction formulation (e.g., cement render and/or cement-based render in composite thermal insulation system) by at least 5 minutes (or at least 10 minutes, or 5 minutes to 30 minutes) compared to a comparable construction formulation.
  • a construction formulation e.g., cement render and/or cement-based render in composite thermal insulation system
  • the particle size distribution can be measured using the Mastersizer 3000 laser diffraction instrument from Malvern.
  • a diluted sample may be pretreated with 30 seconds of ultrasound before measurement.
  • the sample is preferably measured with a dilution about 0.05 g/L (8 % obscuration), sensitivity at normal, lens range at all and a refractive index of 1.456.
  • the characterization of the samples is carried out using the mean values of the volume and number weighted distribution and their ratio (d w , d w /d n ). Unless otherwise specified, the mean values are based on the number weighted distribution.
  • Solids Content' Solids content can be measured by drying 1 to 2 grams of the aqueous dispersion at 105 °C for 4 hours, and by then dividing the weight of dried material by the weight of dispersion.
  • Open Time can be measured according to EN 12004-2. Briefly, a thin layer of the sample is applied to a concrete slab with a straight edge trowel. Then a thicker layer ad comb is added with notched trowel having 6 mm by 6 mm notches. After a desired open time (e.g., 5-, 10-, 20-, and 30-minutes) a 5 cm by 5 cm porous ceramic tile is placed on the adhesive with a load of 2 kg applied for 30 seconds. After 27 days of storage at 23°C ⁇ 2°C and 50% ⁇ 5% relative humidity, the pull-head plates are bonded to the tiles with a suitable high-strength adhesive (e.g., an epoxide adhesive).
  • a suitable high-strength adhesive e.g., an epoxide adhesive
  • the tensile adhesion strength is measured. Generally, a tensile adhesion strength of 0.5 N/mm 2 after a 20-minute open time is required for a C2 classification, and a tensile adhesion strength of 0.5 N/mm 2 after a 30-minute open time is required for a C2E classification.
  • Wettability Wettability for tile adhesives can be measured according to EN 12004-2. Briefly, a stoneware tile (5 cm by 5 cm) is laid into the mortar bed (applied in accordance with EN 12004-2) after a desired open time (e.g., 5-, 10-, 20-, and 30-minutes) and loaded with 2 kg for 30 seconds. Then, the tile is taken from the mortar bed, and the wetting of the rear side of the tile is measured and, unless otherwise specified, reported in % of surface area.
  • a desired open time e.g., 5-, 10-, 20-, and 30-minutes
  • a concentration range listed or described as being useful, suitable, or the like, is intended that any and every concentration within the range, including the end points, is to be considered as having been stated.
  • a range “from 1 to 10” or “of 1 to 10” is to be read as indicating each and every possible number along the continuum between about 1 and about 10.
  • a mixture comprising acetic acid and/or methyl acetate may comprise acetic acid alone, methyl acetate alone, or both acetic acid and methyl acetate.
  • a listing following “one or more of’ or “at least one of’ using “and” to connect the listing is intended in the alternative or conjunctive rather than the disjunctive.
  • “at least one of: A, B, and C” and “one or more of: A, B, and C” are each considered to disclose embodiments of A alone, B alone, C alone, A and B in combination, A and C in combination, B and C in combination, and all three of A, B, and C in combination.
  • compositions, systems, and methods are described herein in terms of “comprising” various components or steps, the compositions, systems, and methods can also “consist essentially of’ or “consist of’ the various components and steps.
  • Embodiment 1 A construction formulation comprising: an inorganic binder; a redispersible polymer powder or polymer dispersion; and 0.01 wt% to 2 wt% of an amino acid additive comprising an amino acid, based on a total dry weight of the construction formulation; wherein the construction formulation has an adhesive pull strength of greater than 0.5 N/mm 2 after 30 minutes of open time (EN 12004, after conditioning for 28 days at 23°C ⁇ 2°C and 50% ⁇ 5% relative humidity), and, optionally, wherein the adhesive pull strength after 30 minutes of open time is greater by at least 10% relative to a comparable construction formulation without amino acid.
  • Embodiment 2 The construction formulation of Embodiment 1, wherein the amino acid is present at 0.01 wt% to 1 wt%, based on a total dry weight of the construction formulation.
  • Embodiment 3. The construction formulation of any preceding Embodiment, wherein the amino acid additive further comprises one or more of: a polysaccharide-based polymer, an efflorescene reducing agent, a filler, and any combination thereof.
  • Embodiment 4 The construction formulation of any preceding Embodiment, wherein the amino acid additive comprises: 20 wt% to 100 wt% of an amino acid, based on a total dry weight of the amino acid additive; 0 wt% to 80 wt% of a polysaccharide-based polymer, based on a total dry weight of the amino acid additive; 0 wt% to 25 wt% of an efflorescence reducing additive, based on a total dry weight of the amino acid additive; and 0 wt% to 80 wt% of a filler, based on a total dry weight of the amino acid additive, wherein at least two of the polysaccharide- based polymer, the efflorescence reducing additive, and the filler are present.
  • Embodiment 5 The construction formulation of any preceding Embodiment, wherein the redispersible polymer is present in the construction formulation from 0.01 wt% to 25 wt%, based on a total dry weight of the construction formulation.
  • Embodiment 6. The construction formulation of any preceding Embodiment, wherein the inorganic binder comprises one or more of: a hydraulically setting binder, a latent hydraulic binder, a pozzolanic binder, and a non-hydraulic binder.
  • Embodiment 7 The construction formulation of any preceding Embodiment, wherein the construction formulation is one of: a tile adhesive, a thermal insulation mortar, a levelling compound, a repair mortar, a gypsum and/or lime and/or cement plaster, a joint mortar, a sealing slurry, smoothing compound, a wallpaper paste, a parquet adhesive, an adhesive, a powder paint, a waterproofing mortar, a membrane, an external thermal insulation composite system, and a tile grout.
  • the construction formulation is one of: a tile adhesive, a thermal insulation mortar, a levelling compound, a repair mortar, a gypsum and/or lime and/or cement plaster, a joint mortar, a sealing slurry, smoothing compound, a wallpaper paste, a parquet adhesive, an adhesive, a powder paint, a waterproofing mortar, a membrane, an external thermal insulation composite system, and a tile grout.
  • Embodiment 8 The construction formulation of any preceding Embodiment, further comprising a solvent and having a solids content from 30 wt% to 90 wt%.
  • Embodiment 9 The construction formulation of any preceding Embodiment, wherein the adhesive pull strength of the construction formulation is 0.5 N/mm 2 or greater after 50 minutes of open time.
  • Embodiment 10 The construction formulation of any preceding Embodiment, wherein the inorganic binder is present from 5 wt% to 99 wt% based on a total dry weight of the construction formulation, and wherein the redispersible polymer powder is present from 0.01 wt% to 25 wt% based on a total dry weight of the construction formulation.
  • Embodiment 11 The construction formulation of any preceding Embodiment, further comprising a filler from 1 wt% to 95 wt% based on a total dry weight of the construction formulation.
  • Embodiment 12 A use of an amino acid to increase an open time of a construction formulation (e.g., cement-based tile adhesive).
  • a construction formulation e.g., cement-based tile adhesive
  • Embodiment 13 The use of Embodiment 12, wherein the open time increases by at least 5 minutes relative to a comparable construction formulation without the amino acid.
  • Embodiment 14 The use of Embodiment 12 or 13, wherein the amino acid is present at 0.01 wt% to 1 wt%, based on a total dry weight of the construction formulation.
  • Embodiment 15 A use of an amino acid to improve a wetting of a ceramic tile with a construction formulation (e.g., cement-based tile adhesive).
  • a construction formulation e.g., cement-based tile adhesive
  • Embodiment 16 The use of Embodiment 15, wherein the wetting after a 20 minute open time is greater by at least 5% of the surface area relative to a comparable construction formulation without amino acid.
  • Embodiment 17 The use of Embodiment 15 or 16, wherein the amino acid is present at 0.01 wt% to 1 wt%, based on a total dry weight of the construction formulation.
  • Embodiment 18 A use of an amino acid to increase a processing time of a construction formulation (e.g., cement render and/or cement-based render in composite thermal insulation system).
  • Embodiment 19 The use of Embodiment 18, wherein the processing time increases by at least 5 minutes relative to a comparable construction formulation without amino acid.
  • Embodiment 20 The use of Embodiment 18 or 19, wherein the amino acid is present at 0.01 wt% to 1 wt%, based on a total dry weight of the construction formulation.
  • Embodiment 21 A redispersible polymer powder formulation comprising: 90 wt% to 99.9 wt% of a redispersible polymer powder, based on a total dry weight of the redispersible polymer powder formulation; and 0.1 wt% to 10 wt% of an amino acid additive comprising an amino acid, based on a total dry weight of the redispersible polymer powder formulation.
  • Embodiment 22 The redispersible polymer powder formulation of Embodiment 21, wherein the amino acid additive comprises: 20 wt% to 100 wt% of an amino acid, based on a total dry weight of the amino acid additive; 0 wt% to 80 wt% of a polysaccharide-based polymer, based on a total dry weight of the amino acid additive; and 0 wt% to 25 wt% of an efflorescence reducing additive, based on a total dry weight of the amino acid additive.
  • Embodiment 23 The redispersible polymer powder formulation of any one of Embodiments 21-22, wherein the amino acid is present from 0.1 wt% to 10 wt% based on a total dry weight of the redispersible polymer powder formulation.
  • Embodiment 24 The redispersible polymer powder formulation of any one of Embodiments 21-23, wherein the redispersible polymer powder comprises one or more polymers of: a poly(vinyl acetate), an ethylene-vinyl acetate copolymer, an ethylene-vinyl acetate-vinyl versatate copolymer, an ethylene vinyl acetate (meth)acrylate copolymer, an ethylene-vinyl acetate-vinyl chloride copolymer, a vinyl acetate-vinyl versatate copolymer, a vinyl acetate vinyl versatate (meth)acrylate copolymer, a vinyl versatate (meth)acrylate copolymer, a styrene acrylate copolymer, and a styrene butadiene copolymer.
  • Embodiment 25 The redispersible polymer powder formulation of any one of Embodiments 21-24, wherein the redispersible polymer powder has a mean particle size (based on number distribution) of 10 pm or greater (e.g., 10 pm to 200 pm).
  • Embodiment 26 A polymer dispersion formed by radical emulsion polymerization, the polymer dispersion comprising: a polymer; and 0.1 wt% to 10 wt% of an amino acid additive.
  • Embodiment 27 The polymer dispersion of Embodiment 26, wherein the polymer comprises one or more of: a poly(vinyl acetate), an ethylene-vinyl acetate copolymer, an ethylenevinyl acetate-vinyl versatate copolymer, an ethylene vinyl acetate (meth)acrylate copolymer, an ethylene-vinyl acetate-vinyl chloride copolymer, a vinyl acetate-vinyl versatate copolymer, a vinyl acetate vinyl versatate (meth)acrylate copolymer, a vinyl versatate (meth)acrylate copolymer, a styrene acrylate copolymer, and a styrene butadiene copolymer.
  • Embodiment 28 The polymer dispersion of Embodiment 26, wherein the polymer comprises from 60 wt% to 96 wt% vinyl acetate and from 4 wt% to 40 wt% ethylene.
  • Embodiment 29 The polymer dispersion of any one of Embodiments 26-28 further comprising: a stabilizer, preferably a polyvinyl alcohol having a degree of hydrolysis from 80 mol% to 98 mol % and a Hbppler viscosity of 2 to 30 mPa s, more preferably a polyvinyl alcohol having a degree of hydrolysis from 86 mol % to 90 mol % and a Hbppler viscosity of 2 to 6 mPa s.
  • a stabilizer preferably a polyvinyl alcohol having a degree of hydrolysis from 80 mol% to 98 mol % and a Hbppler viscosity of 2 to 30 mPa s, more preferably a polyvinyl alcohol having a degree of hydrolysis from 86 mol % to 90 mol % and a Hbppler viscosity of 2 to 6 mPa s.
  • the amino acid additive comprises: 20 wt% to 100 wt% of an amino acid, based on a total dry weight of the amino acid additive; 0 wt% to 80 wt% of a polysaccharide-based polymer, based on a total dry weight of the amino acid additive; and 0 wt% to 25 wt% of an efflorescence reducing additive, based on a total dry weight of the amino acid additive.
  • Embodiment 31 An amino acid additive comprising: 50 wt% to 99 wt% of an amino acid, based on a total dry weight of the amino acid additive; and 1 wt% to 50 wt% of a polysaccharide-based polymer, based on a total dry weight of the amino acid additive.
  • Embodiment 32 The amino acid additive of Embodiment 31 further comprising: 0.1 wt% to 25 wt% of an efflorescence reducing additive, based on a total dry weight of the amino acid additive.
  • Embodiment 33 The amino acid additive of any one of Embodiments 31-32 further comprising: 0.1 wt% to 10 wt% of a filler, based on a total dry weight of the amino acid additive.
  • Construction formulations were prepared according to Table 3 using the dry mortar formulations of Table 1 and the glycine additive additives (i.e., amino acid additive) of Table 2.
  • **Slurries of CF-6 - CF-8 were prepared with 100 parts by weight of the listed dry components with 35 parts by weight of water.
  • the inclusion of glycine increases the adhesion strength at longer open times, which improves the adhesion of the construction formulation to tiles and other structures.
  • Preferred construction formulations (E-classification) have an adhesive pull strength of greater than 0.5 N/mm 2 through 30 minutes. The inventive samples achieve this and, in some instance, maintain said adhesive pull strength past 50 minutes and 60 minutes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne des additifs à base d'acides aminés qui peuvent comprendre un acide aminé, éventuellement un polymère à base de polysaccharide, éventuellement un additif réducteur d'efflorescence, et éventuellement une charge. Lesdits additifs à base d'acides aminés peuvent être utiles dans des formulations de construction (p. ex. des ciments, des mortiers, des plâtres, etc.), des formulations de poudre de polymère redispersable et des dispersions de polymère. Ces additifs à base d'acides aminés peuvent augmenter le temps ouvert, augmenter la mouillabilité et/ou augmenter le temps de traitement de formulations de construction.
PCT/EP2024/075034 2023-09-07 2024-09-06 Additifs à base d'acides aminés et compositions et procédés associés Pending WO2025051982A2 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
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US5633334A (en) 1994-08-31 1997-05-27 National Starch And Chemical Investment Holidng Corporation Ethylene-vinyl acetate emulsions with an improved balance of adhesive properties
US20090223416A1 (en) 2005-09-27 2009-09-10 National Starch And Chemical Investment Corporation Powder redispersible in water, process for production thereof and use thereof
WO2021152169A1 (fr) 2020-02-01 2021-08-05 Celanese Switzerland Ag Additif de composition cimentaire pour application machine

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US20040143038A1 (en) * 2003-01-16 2004-07-22 Thomas Aberle Age-stable composition having a polysaccharide
US9950954B2 (en) * 2012-07-10 2018-04-24 Sika Technology Ag Two component cement composition
EP2876094A1 (fr) * 2014-04-03 2015-05-27 Basf Se Ciment et composition de liant à base de sulfate de calcium
PL3484831T3 (pl) * 2016-07-14 2020-09-21 Nouryon Chemicals International B.V. Skład zaprawy etics
EP3484832B8 (fr) * 2016-07-14 2020-11-04 Celanese Switzerland AG Marqueur de composition de construction

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US5633334A (en) 1994-08-31 1997-05-27 National Starch And Chemical Investment Holidng Corporation Ethylene-vinyl acetate emulsions with an improved balance of adhesive properties
US20090223416A1 (en) 2005-09-27 2009-09-10 National Starch And Chemical Investment Corporation Powder redispersible in water, process for production thereof and use thereof
WO2021152169A1 (fr) 2020-02-01 2021-08-05 Celanese Switzerland Ag Additif de composition cimentaire pour application machine

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"Ullmann's Encyclopedia of Industrial Chemistry", vol. 21, 1992, PUBLISHING HOUSE CHEMISTRY, pages: 169 - 18
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