EP0973821A1 - Coulis d'ethers de cellulose - Google Patents

Coulis d'ethers de cellulose

Info

Publication number
EP0973821A1
EP0973821A1 EP98915257A EP98915257A EP0973821A1 EP 0973821 A1 EP0973821 A1 EP 0973821A1 EP 98915257 A EP98915257 A EP 98915257A EP 98915257 A EP98915257 A EP 98915257A EP 0973821 A1 EP0973821 A1 EP 0973821A1
Authority
EP
European Patent Office
Prior art keywords
slurry
composition
cellulose
weight percent
oxygenated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98915257A
Other languages
German (de)
English (en)
Inventor
Luiz Roberto Eiger
Emmett Malone Partain, Iii
Arthur Herbert Marsh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Chemicals and Plastics Technology LLC
Original Assignee
Union Carbide Chemicals and Plastics Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Chemicals and Plastics Technology LLC filed Critical Union Carbide Chemicals and Plastics Technology LLC
Publication of EP0973821A1 publication Critical patent/EP0973821A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/43—Thickening agents
    • C09D7/44—Combinations of two or more thickening agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/26—Cellulose ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C08L1/284—Alkyl ethers with hydroxylated hydrocarbon radicals

Definitions

  • the present invention relates to slurries of water soluble polymers. More specifically, the present invention relates to slurries of water soluble cellulose ethers in oxygenated, organic carriers.
  • Cellulose ethers have been used commercially in a variety of applications.
  • Typical industrial applications for cellulose ethers include, for example, use as viscosity adjusters, suspension aids, oil field drilling and fracturing materials, adhesion promoters for siliceous substrates, e.g., glass panels and ceramics, coating materials for plastic and metal substrates, protective colloids and building materials, e.g., wallboard compound and latex grout additive.
  • Typical personal care applications include, for example, pharmaceutical and cosmetic compositions, e.g., ointments, skin creams, lotions, soaps, shampoos, conditioners and the like.
  • cellulose ethers are utilized as thickeners.
  • cellulose ethers In latex paint, cellulose ethers generally provide excellent thickening efficiency and other properties while being substantially inert to the latexes, surfactants and coalescing agents commonly used in latex paints.
  • Cellulose ethers such as for example, hydroxyethyl cellulose
  • the final compositions which comprise the cellulose ethers are often liquids.
  • the dry powdered cellulose ethers are typically incorporated into the final liquid compositions by the formulators of the liquid products.
  • solids are more difficult to measure, dissolve, transfer and store than liquids.
  • liquids generally dissolve more smoothly and are easier to transfer, i.e., can be pumped, than solids.
  • Aqueous slurries of cellulose ethers have been proposed whereby high concentrations of salt, e.g., sodium formate, potassium carbonate or diammonium phosphate, are used to sufficiently reduce the water solubility of the cellulose ether to provide a suspension of cellulose ether particles in the carrier.
  • salt-containing slurries have not achieved widespread use in the latex industry, particularly the latex paint industry because the high salt concentration in the slurry is deleterious to the final dried paint film as the salt impairs the weatherability, adhesion and water resistance of the coating.
  • cellulose ether slurries are desired which do not require the use of high concentrations of salt in order to disperse the cellulose ether.
  • the slurries provide high concentrations, e.g., greater than 30 weight percent, of the cellulose ether.
  • the other ingredients in the slurry e.g., the carrier, be compatible and beneficial to the final composition in which the slurry is employed.
  • the cellulose ether slurries of the present invention comprise a cellulose ether and an oxygenated, organic carrier which is substantially a non- solvent for the cellulose ether.
  • the cellulose ether slurries of the present invention can be prepared to be substantially free of salt and water.
  • the cellulose ether slurries of the present invention comprise ingredients, e.g., the oxygenated, organic carrier, thickener, surfactants and the like, which are commonly used in the preparation of latex compositions, e.g., paints.
  • the use of the organic, oxygenated carrier can provide significant performance advantages in latex compositions as compared to slurries made using other carriers, such as, for example, hydrocarbons.
  • the cellulose ether slurries of the present invention can provide formulators greater efficiency in production and simpler hardware and manpower requirements as compared to using cellulose ethers in a dry powder form.
  • Cellulose ethers suitable for use in accordance with the present invention include etherified derivatives of cellulose.
  • Typical cellulose ethers include for example, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl carboxylmethyl cellulose, and the like.
  • Preferred cellulose ethers include hydroxyethyl cellulose and ethyl hydroxyethyl cellulose.
  • Ether substituents suitable for use in accordance with the present invention comprise ethers preferably having 2 to 4 carbon atoms per molecule.
  • the ether substituent is derivatized onto the cellulose by reacting the cellulose with an alkylene oxide, preferably ethylene oxide.
  • the amount of ether substitution is typically from about 1.5 to 6 and preferably from about 2 to 4 moles of ether substituent per mole of cellulose ether. Further details concerning the manufacture of such cellulose ethers are known to those skilled in the art.
  • the molecular weight of the cellulose ethers suitable for use in accordance with the present invention typically ranges from about 10,000 to 2 x 10 6 grams per gram mole and preferably ranges from about 70,000 to 1 x 10 G grams per gram mole.
  • the term "molecular weight” means weight average molecular weight. Methods for determining weight average molecular weight of cellulose ethers are known to those skilled in the art. One preferred method for determining molecular weight is low angle laser light scattering.
  • the viscosity of the cellulose ethers typically ranges from about 5 to 6000 centipoise, preferably from about 100 to 3000 centipoise.
  • viscosity refers to the viscosity of a 1.0 weight percent aqueous solution of the polymer measured at 25°C with a Brookfield viscometer. Such viscosity measuring techniques are known in the art and are described in ASTM D 2364-89.
  • the average particle size of the cellulose ethers is not critical, but is preferably from about 0.01 to 1000 microns and more preferably from about 50 to 400 microns.
  • the cellulose ethers may be substituted with one or more hydrophobic substituents.
  • hydrophobic substituents are known in the art and typically comprise alkyl, alkene, aryl-alkene or aryl- alkyl groups having about 8 to 24 carbon atoms per molecule.
  • Such hydrophobically-modified cellulose ethers are described, for example, in U.S. Patent Nos. 4,228,277; 5,120,328 and 5,504,123 and European Patent Publication 0 384 167 BI.
  • the substitution level of the hydrophobic substituents on the cellulose ether is typically from about 0.001 to 0.1 and preferably from about 0.004 to about 0.05 moles of the hydrophobic substituent per mole of cellulose ether. More than one particular hydrophobic substituent can be substituted onto the cellulose ether provided that the total substitution level is within the desired range.
  • the ionic character of the cellulose ethers of the present invention is not critical. It is typically preferred however that the ionic charge be anionic and more preferably nonionic. Cationic cellulose ethers are often undesirable in latex compositions since they can cause agglomeration and flocculation with anionic ingredients, e.g., anionic polyacrylate dispersants, anionic maleic acid copolymer dispersants, and sodium sulfosuccinate surfactants often found in latex compositions. Further details concerning the substituents and methods for modifying the ionic character of cellulose ethers are known to those skilled in the art.
  • the cellulose ether derivatives of the present invention are water-soluble.
  • water-soluble means that at least 1 gram, and preferably at least 2 grams of the cellulose ether derivative are soluble in 100 grams of distilled water at 25°C and 1 atmosphere.
  • the extent of water-solubility can be varied by adjusting the extent of ether substitution on the cellulose ether and by adjusting the substitution level of the hydrophobic substituents, when present. Techniques for varying the water solubility of cellulose ethers are known to those skilled in the art.
  • the amount of the cellulose ether in the slurries of the present invention is typically from about 1 to 75 weight percent, preferably from about 5 to 60 weight percent, more preferably from about 20 to 60 weight percent and most preferably from about 30 to 50 weight percent, based on the total weight of the slurry.
  • Cellulose ethers suitable for use in accordance with the present invention are commercially available from, for example, Union Carbide Corporation, Danbury, CT.
  • the oxygenated, organic carriers suitable for use in accordance with the present invention include any oxygenated organic compounds which are substantially non-solvents for the cellulose ether.
  • non-solvent means compounds which do not dissolve or substantially swell the cellulose ether.
  • the oxygenated organic solvents will comprise from about 2 to 12 carbon atoms per molecule.
  • the oxygenated, organic carrier is selected from the group consisting of ketones, carbonates, esters, ester alcohols, glycol ethers, glycols and mixtures thereof.
  • suitable oxygenated , organic carriers include ketones such as methyl ethyl ketone, methyl i-butyl ketone, and methyl n-propyl ketone; carbonates such as propylene carbonate and ethylene carbonate; esters such as ethyl propionate and n-propyl propionate; ester alcohols such as 2- ethoxyethyl acetate, e.g., ethyl CELLOSOLVE ® acetate available from Union Carbide Corporation, Danbury, CT, diethylene glycol monobutyl ether acetate, e.g., EASTMAN ® DB acetate available from Eastman Chemical Company, Kingsport, TN, 2-ethoxyethyl acrylate, 2,2,4- trimethyl-l,3-pent
  • the amount of the oxygenated, organic carrier suitable for use in accordance with the present invention is typically from about 25 to 99 weight percent, preferably from about 30 to 80 weight percent, more preferably from about 40 to 75 weight percent and most preferably from about 50 to 70 weight percent, based on the total weight of the slurry.
  • the particulate, thickening agents suitable for use in accordance with the present invention include any particulate materials which can function to thicken the slurry, and are compatible with the slurry and nonreactive with the cellulose ether.
  • small amounts of the particulate thickening agent will have the ability to greatly thicken the carrier and/or to coat the cellulose ether thereby preventing stratification of the cellulose ether during extended periods of time such as during storage and transit.
  • the particulate thickening agents used in the present invention comprise materials which are insoluble in the carrier and preferably comprise at least one particulate metal or metalloid oxide powder, such as, for example, silica, alumina, alumina hydrates or clay, e.g., montmorillonites, attapulites, hectorites, and bentonites, and mixtures thereof.
  • the particulate thickening agents may be hydrophilic or hydrophobic, i.e., surface modified with a hydrophobic agent. Suitable particulate thickening agents are commercially available.
  • organobentonite clays e.g., BENTONE ® SD-2 available from Rheox Inc., Hightstown, NJ
  • fumed hydrophilic silica e.g., CAB-O-SIL ® M-5 available from Cabot Corporation
  • Tuscola, IL fumed hydrophobic silica
  • CAB-O- SIL ® TS-530 available from Cabot Corporation
  • Tuscola, IL and attapulgite clay
  • ATTAGEL ® available from Engelhard Industries, Edison, NJ.
  • More than one thickening agent may be used in accordance with the present invention.
  • the thickening agent is dispersed in the oxygenated organic carrier to viscosify this fluid, and best results are usually obtained by dispersing the thickening agent under high shear conditions. Simple, low shear mixing of the thickening agent and the oxygenated organic carrier may not be sufficient to obtain maximum fluid viscosity to prevent settling or stratification of the suspended cellulose ether.
  • the use of a Cowles-type high shear mixer is preferred in the preparation of these slurries, but other high shear mixing equipment is also suitable.
  • the amount of the thickening agents used in the slurries of the present invention is typically from about 0.1 to 10 weight percent and preferably from about 1 to 5 weight percent, based on the total weight of the slurry.
  • the cellulose ether slurries of the present invention also typically comprise a surfactant.
  • the surfactant is preferably one that enhances the dissolution, i.e., wetting of the polymer.
  • the ionic carrier of the surfactant is not critical although non-ionic and anionic surfactants are generally preferred.
  • Suitable surfactants are commercially available. Examples include octyl phenol ethoxylates, e.g., TRITON ® X-114 available from _ Union Carbide Corporation, Danbury, CT, nonyl phenol ethoxyates, e.g., TERGITOL ® NP-10 available from Union Carbide Corporation, Danbury, CT, ethoxylated sorbitan esters, e.g., TWEEN ® 60 available from ICI Incorporated, Wilmington, DE, primary alkyl alcohol ethoxylates, e.g., NEODOL ® 25-12 available from Shell Chemicals, Houston, TX, ethylene oxide/propylene oxide block copolymers, e.g., PLURONIC ® P104 available from BASF, Holland, MI, and polyethylene glycol alkyl esters.
  • octyl phenol ethoxylates e.g., TRITON ® X-114 available from _
  • the concentration of the surfactant typically ranges from about 0.1 to 10 weight percent, based on the total weight of the slurry.
  • the slurry compositions of the present invention can also contain additional ingredients known in the art such as, for example, biocides, dyes, colors, perfumes, anti-foam and the like.
  • additional ingredients known in the art such as, for example, biocides, dyes, colors, perfumes, anti-foam and the like.
  • the amount of such other ingredients is typically be from about 0 to 1 weight percent, preferably from about 5 to 5,000 ppm, based on the total weight of the slurry.
  • the slurries of the present invention can be prepared by combining the cellulose ether, oxygenated organic carrier and particulate thickening agent by mixing techniques known to those skilled in the art.
  • a preferred method for preparing the slurries in accordance with the present invention comprises dispersing the particulate thickening agent in the oxygenated, organic carrier to form an initial dispersion and then adding the cellulose ether to the initial dispersion to form the slurry.
  • Surfactants and additional ingredients can be added at any convenient time.
  • the slurries of the present invention are stable for a period of at least one week, more preferably at least two weeks and most preferably at least one month.
  • stable means that the cellulose ether particles will remain substantially dispersed in the oxygenated, organic carrier. Although there may be some settling of the cellulose ether particles, they can be easily redispersed with slight agitation.
  • the viscosity of the cellulose ether slurries of the present invention is from about 100 to 5000 centipoise, preferably from about 300 to 1000 centipoise at a shear rate of about 10 sec 1 . It is also preferred that the viscosity of the slurries of the present invention is such that the slurries are pumpable and pourable.
  • the slurries of the present invention are substantially free of salt, e.g., sodium formate, potassium carbonate or diammonium phosphate. It is also preferred that the slurries are substantially free of water, i.e., non-aqueous.
  • the term "substantially free” means that there is less than about 5 weight percent, preferably less than about 2 weight percent, more preferably less than about 1 weight percent and most preferably less than about 0.5 weight percent of the salt or water, as the case may be.
  • the cellulose ether derivatives of the present invention have a variety of end-use applications, such as, for example, industrial applications and personal care applications.
  • Typical industrial applications for cellulose ethers include, for example, use as viscosity adjusters, suspension aids, oil field drilling and fracturing materials, adhesion promoters for siliceous substrates, e.g., glass panels and ceramics, coating materials for plastic and metal substrates, protective colloids and building materials, e.g., wallboard compound and latex grout additive.
  • Typical personal care applications include, for example, pharmaceutical and cosmetic compositions, e.g., ointments, skin creams, lotions, soaps, shampoos, conditioners and the like.
  • a preferred end-use application for cellulose ether derivatives of the present invention is as an additive in latex compositions.
  • Typical latex compositions comprise as essential components: water; latex polymer; and the cellulose ether.
  • the kind and amount of latex polymer is not critical, and may be provided based on well established procedures.
  • Typical latex polymers include, but are not limited to, various types such as the following: acrylics; alkyds; celluloses; coumarone-indenes; epoxys, esters; hydrocarbons; maleics' melamines; natural resins; oleo resins; phenolics; polyamides; polyesters; rosins; silicones; styrenes; terpenes; ureas; urethanes; vinyls; vinyl acrylics; and the like.
  • Illustrative latex polymers include, but are not limited to, one or more homo- or copolymers containing one or more of the following monomers: (meth)acrylates; vinyl acetate; styrene; ethylene; vinyl chloride; butadiene; vinylidene chloride; vinyl versatate; vinyl propionate; t -butyl acrylate; acrylonitrile; neoprene; maleates; fumarates; and the like, including plasticized or other derivatives thereof.
  • the amount of cellulose ether which may be used in the latex composition is not narrowly critical. In the broadest sense, the amount of cellulose ether is that which is an effective amount in promoting crosslinking while preferably providing the desired thickening and rheological properties to the latex composition. Typically, the amount of cellulose ether is at least about 0.05, preferably from about 0.15 to about 3, and more preferably from about 0.25 to about 1.5 weight percent of the latex composition.
  • the selection and amount of latex polymer used in the latex composition can be determined by those skilled in the art is not critical. Typically, the amount of dry latex polymer is at least about 1, preferably from about 2 to about 50, and most preferably from about 3 to about 40 weight percent of the total latex composition.
  • the latex composition may optionally contain other components such as those generally used in latex compositions.
  • Typical components include, but are not limited to, one or more of the following: solvents such as aliphatic or aromatic hydrocarbons, alcohols, esters, ketones, glycols, glycol ethers, nitroparaffins or the like; pigments; fillers, dryers, flatting agents; plasticizers; stabilizers; dispersants; surfactants; viscosifiers including other polymeric additives, cellulose ether based thickeners and so on; suspension agents; flow control agents; defoamers; anti-skinning agents; preseratives; extenders; filming aids; other crosslinkers; surface improvers; corrosion inhibitors; and other ingredients useful in latex compositions.
  • solvents such as aliphatic or aromatic hydrocarbons, alcohols, esters, ketones, glycols, glycol ethers, nitroparaffins or the like
  • pigments fillers, dryers, flatting agents
  • plasticizers
  • the cellulose ether slurries of the present invention can be added to latex paint, for example, during their manufacture during the pigment grind (mill base) step, let-down step, or both.
  • the use of the organic, oxygenated carrier can provide significant performance advantages in latex compositions as compared to slurries made using other carriers, such as, for example, hydrocarbons.
  • slurries made using a liquid hydrocarbon e.g., naphtha, mineral oils, kerosenes, Diesel fuel, and TELURA ® 415 hydrocarbon oil (from Exxon Chemical Company, Houston, TX)
  • a liquid hydrocarbon e.g., naphtha, mineral oils, kerosenes, Diesel fuel, and TELURA ® 415 hydrocarbon oil (from Exxon Chemical Company, Houston, TX)
  • These hydrocarbons are poor latex coalescing agents and therefore yield poor dried paint films, they are incompatible with many latex paint ingredients (including water), they tend to phase- separate from water-borne systems, and many have objectionable odors.
  • TAMOL® 731 An anionic polymer dispersant, available dispersant from Rohm & Haas, Philadelphia, PA.
  • KTPP Potassium tripolyphosphate available from FMC, Philadelphia, PA.
  • TERGITOL® NP-10 A nonyl phenol ethoxylate non-ionic surfactant surfactant, available from Union Carbide, Danbury, CT.
  • COLLOIDS® 643 A silica/petroleum dispersion, available from antifoam Rhone-Poulenc, Kennesaw, GA. AMP-95 2-Amino-2-methyl-l-propanol, available from Angus Chemical Company, Buffalo Grove, IL.
  • SATINTONE #1 An aluminum silicate, available from calcined clay Engelhard Industries, Edison, NJ.
  • UCAR® 6379 vinyl- A vinyl acetate/butyl acrylate copolymer acrylic latex latex available from UCAR® Emulsion Systems, Cary, NC.
  • UCAR® Filmer lBT 2,2,4-Trimethyl-l,3-pentanediol monoisobutyrate available from Union Carbide, Danbury, CT.
  • TRITON® GR-7M A sodium sulfosuccinate anionic surfactant, surfactant available from Union Carbide, Danbury, CT.
  • TAMOL® 960 An anionic polymer dispersant, available dispersant from Rohm & Haas, Philadelphia, PA.
  • NOPCO® NXZ A silica/mineral oil dispersion, available antifoam from Henkel Corporation, Amber, PA.
  • TRITON® CF-10 A alkylaryl polyether nonionic surfactant, surfactant available from Union Carbide, Danbury, CT.
  • TI-PURE® R-902 rutile Titanium dioxide (rutile), available from DuPont, Wilmington, DE.
  • Zinc Oxide Zinc Oxide, XX 631R Zinc Corporation of America, Palmerton, PA. Silver Bond BTM silica Silica available from Unimin Specialty Minerals, Havelock, Ontario (Canada).
  • ATTAGEL® 50 clay Attapulgite clay available from Engelhard Industries, Edison, NJ.
  • UCAR® 624 all-acrylic An acrylate ester copolymer latex available latex from UCAR® Emulsion Systems, Cary, NC.
  • TI-PURE® R-900 rutile Titanium dioxide (rutile), available from DuPont, Wilmington, DE.
  • TAMOL® SG-1 An anionic polymer dispersant, available dispersant from Rohm & Haas, Philadelphia, PA.
  • SYLOID® 244 Silica available from Davison Chemical, amorphous silica Division of W. R. Grace, Baltimore, MD.
  • RHOPLEX® AC-417M An acrylic ester copolymer latex available all- acrylic latex from Rohm & Haas, Philadelphia, PA.
  • CELLOSIZE® HM An experimental alkyl aryl modified HEC 200 hydroxyethyl cellulose having an EO MS of about 3.5 and a hydrophobe DS of about 0.01
  • NATROSOL® Plus 330 A linear hexadecyl modified hydroxyethyl HMHEC cellulose having an EO MS of about 3.5 and a hydrophobe DS of about 0.01 available from Aqualon Company, Wilmington, DE.
  • NATROSOL® 250 An enzyme resistant hydroxyethyl cellulose
  • H4BR HEC polymer available from Aqualon Company,
  • test procedures define the performance tests used in the latex paint evaluation.
  • ICI viscosity Viscosity, in poise, measured on the final latex paint formulation using an ICI Cone and Plate Viscometer, Model VR- 4000. ASTM Method D 4287-88.
  • a slurry is prepared by mixing 14.0 g of UCAR ® Filmer IBT solvent and 1.0 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 6.0 g of CELLOSIZE ® HEC QP- 52MH is added and mixed at 4000 rpm for 10 minutes, then 0.3 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 28.2% and a UCAR ® Filmer IBT content of 65.7%.
  • a slurry is prepared by mixing 14.0 g of UCAR ® Filmer IBT solvent and 1.0 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 6.0 g of CELLOSIZE ® HEC QP- 52MH is added and mixed at 4000 rpm for 10 minutes, then 0.6 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 27.8% and a UCAR ® Filmer IBT content of 64.8%.
  • the slurries from Examples 1-4 were used to prepare latex paints. Control experiments were conducted using latex paints prepared with the corresponding powdered cellulose ether polymers as indicated in Tables 1, 2, and 3. In the case of the slurries, the general procedure used to prepare the latex paints was the same in that the same total solids of cellulose ether polymer was used and the quantity of UCAR ® Filmer IBT added in the let-down was reduced to compensate for the UCAR ® Filmer IBT added with the slurry so that the total UCAR ® Filmer IBT content was the same.
  • the compositions of the latex paints utilized in Examples 5-20 is shown below in Tables 1, 2 and 3.
  • the paint in Table 1 is an interior vinyl-acrylic flat in which the cellulose ether/cellulose ether slurry is added in the pigment grind step.
  • the paint in Table 2 is an exterior all-acrylic flat in which the cellulose ether/cellulose ether slurry is added partially in the pigment grind step and partially in the let-down step.
  • the paint in Table 3 is an interior all-acrylic semi-gloss in which all of the cellulose ether/cellulose ether slurry is added in the let-down step.
  • a slurry is prepared by mixing 36.0 g of UCAR ® Filmer IBT solvent and 0.6 g of CAB-O-SIL ® M-5 fumed hydrophilic silica using a Cowles disperser for 5 minutes. 24.0 g of CELLOSIZE ® HEC QP-4400H is added, and the mixture is stirred for another 5 minutes. The final slurry is 39.6% HEC.
  • a slurry is prepared by mixing 36.0 g of UCAR ® Filmer IBT solvent and 0.6 g of CAB-O-SIL ® M-5 fumed hydrophilic silica using a Cowles disperser for 5 minutes. 24.0 g of CELLOSIZE ® HEC QP-4400H is added, and the mixture is stirred for another 5 minutes. 0.9 g of TERGITOL ® NP- 10 surfactant is added and the slurry is stirred for 1 more minute. The final slurry is 39.0% HEC.
  • a slurry is prepared by mixing 36.0 g of UCAR ® Filmer IBT solvent and 0.6 g of CAB-O-SIL ® M-5 fumed hydrophilic silica using a Cowles disperser for 5 minutes. 24.0 g of CELLOSIZE ® HEC QP-4400H is added, and the mixture is stirred for another 5 minutes. 1.8 g of TERGITOL ® NP- 10 surfactant is added and the slurry is stirred for 1 more minute. The final slurry is 38.5% HEC. After standing three days, the slurries of examples 14-16 only exhibited modest settling (3-4 mm of clear fluid was noted on the top and the slurry was easily redispersed).
  • a slurry is prepared by mixing 42.0 g of UCAR ® Filmer IBT solvent and 3.0 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 18.0 g of NATROSOL ® 250 H4BR HEC is added and mixed at 4000 rpm for 10 minutes, then 1.80 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 27.8% and a UCAR ® Filmer IBT content of 64.8%.
  • a slurry is prepared by mixing 36.0 g of UCAR ® butyl DIPROPASOL solvent and 3.0 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 24.0 g of CELLOSIZE ® HEC QP- 4400H is added and mixed at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 38.1% and a UCAR ® butyl DIPROPASOL content of 57.1%.
  • a slurry is prepared by mixing 36.0 g of UCAR ® butyl DIPROPASOL solvent and 0.6 g of CAB-O-SIL ® M-5 silica using a Cowles disperser for 10 minutes at 2000 rpm. 24.0 g of CELLOSIZE ® HEC QP-4400H is added and mixed at 4000 rpm for 10 minutes, then 1.80 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 38.5% and a UCAR ® butyl DIPROPASOL content of 57.7%.
  • a slurry is prepared by mixing 18.0 g of UCAR ® Filmer IBT solvent and 1.5 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 12.0 g of hydroxyethyl guar is added and mixed at 4000 rpm for 10 minutes, then 0.9 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a viscous tan slurry with a final hydroxyethyl guar content of 37.0% and a UCAR ® Filmer IBT content of 55.6%. Examples 31-34
  • Example 31 Example 32 Example 33 Example 34
  • a slurry is prepared by mixing 36.0 g of UCAR ® Filmer IBT solvent and 3.0 g of BENTONE ® SD-2 organobentonite clay using a Cowles disperser for 10 minutes at 2000 rpm. 24.0 g of CELLOSIZE ® HEC QP- 4400H is added and mixed at 400 rpm for 10 minutes, then 0.9 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HEC content of 37.6% and a UCAR ® Filmer IBT content of 56.3%. The viscosity of this slurry was measured using a Haake viscometer, and was found to be about 170 cP at 1200 sec 1 and about 615 cP at 10 sec 1 .
  • Example 31 The procedure of example 31 is repeated except using 0.60 g of CAB- O-SIL ® M-5 silica instead of 3.0 g of BENTONE ® SD-2 clay.
  • the final mixture is a fluid tan slurry with a final HEC content of 39.0% and a UCAR ® Filmer IBT content of 58.5%.
  • the viscosity of this slurry was measured using a Haake viscometer, and was found to be about 125 cP at 1200 sec 1 and about 370 cP at 10 sec 1 .
  • a slurry is prepared by mixing 18.0 g of UCAR ® Filmer IBT solvent and 0.30 g of CAB-O-SIL ® M-5 silica using a Cowles disperser for 10 minutes at 2000 rpm. 12.0 g of CELLOSIZE ® HM HEC 200 is added and mixed at 400 rpm for 10 minutes, then 0.9 g of TERGITOL ® NP-10 surfactant is added and the mixture is stirred at 4000 rpm for 10 minutes. The final mixture is a fluid tan slurry with a final HMHEC content of 38.5% and a UCAR ® Filmer IBT content of 57.7%.
  • Example 39 Example 40 Example 41 Example 42
  • HMHEC 200 example 37 NATROSOL ® example 38 Plus 330
  • cellulose ether in addition to the cellulose ether described herein, one skilled in the art may use other water-soluble polysaccharides, including naturally occurring, biosynthesized and derivatized carbohydrate polymers or mixtures thereof.
  • Such materials encompass high molecular weight polymers composed of monosaccharide units joined by glycosidic bonds. These materials may include, for example, the entire starch and cellulose families; pectin, chitosan; chitin; the seaweed products such as agar and carrageenan; alginate; the natural gums such as guar, e.g., hydroxyethyl guar, arabic and tragacanth; bio-derived gums such as xanthan; and the like.
  • the description herein relating to the cellulose ethers would also apply to other polysaccharides.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

On décrit des coulis d'éthers de cellulose soluble dans l'eau. Lesdits coulis sont constitués d'éthers de cellulose particulaires dans un support organique oxygéné, lequel est sensiblement non solvant pour les éthers de cellulose, d'un agent épaississant et, éventuellement, de tensioactifs ou autres ingrédients. Les ingrédients contenus dans les coulis sont compatibles avec les ingrédients utilisés dans la fabrication de compositions au latex (peinture au latex, par exemple).
EP98915257A 1997-04-04 1998-04-03 Coulis d'ethers de cellulose Withdrawn EP0973821A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US4293897P 1997-04-04 1997-04-04
US42938P 1997-04-04
PCT/US1998/006592 WO1998045355A1 (fr) 1997-04-04 1998-04-03 Coulis d'ethers de cellulose

Publications (1)

Publication Number Publication Date
EP0973821A1 true EP0973821A1 (fr) 2000-01-26

Family

ID=21924554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98915257A Withdrawn EP0973821A1 (fr) 1997-04-04 1998-04-03 Coulis d'ethers de cellulose

Country Status (12)

Country Link
EP (1) EP0973821A1 (fr)
JP (1) JP2001503101A (fr)
KR (1) KR20010006021A (fr)
CN (1) CN1257521A (fr)
AU (1) AU6948598A (fr)
BR (1) BR9808468A (fr)
CA (1) CA2285616A1 (fr)
IL (1) IL132155A0 (fr)
LT (1) LT4700B (fr)
NO (1) NO994718D0 (fr)
PL (1) PL335908A1 (fr)
WO (1) WO1998045355A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6306933B1 (en) 1999-03-30 2001-10-23 Union Carbide Chemicals & Plastics Technology Corporation Cellulose ether slurries
SE526356C2 (sv) 2003-12-15 2005-08-30 Akzo Nobel Nv Associativa vattenlösliga cellulosaetrar
WO2006078266A1 (fr) * 2005-01-20 2006-07-27 The Sherwin-Williams Company Boues non aqueuses employées en tant qu'épaississants et agents antimousse et méthodes d'emplois desdites boues dans des systèmes aqueux
EP1889870A1 (fr) * 2006-08-16 2008-02-20 BIOeCON International Holding N.V. Suspension stable d'une biomasse comprenant des particules inorganiques
CN101981057B (zh) 2008-03-31 2013-07-24 旭化成纤维株式会社 纤维素衍生物微粒、该微粒的分散液、该微粒的分散体及诊断药
AU2013332324B9 (en) * 2012-10-16 2017-06-08 Rohm And Haas Company Nonaqueous method of dispersing a water soluble polymer
CN113773527B (zh) * 2021-09-27 2022-07-12 高密银鹰新材料股份有限公司 一种液体羟乙基纤维素浆料及其制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1131098A (fr) * 1977-12-02 1982-09-07 David B. Braun Substance polymerique vite dissoute dans l'eau
US4228277A (en) 1979-02-12 1980-10-14 Hercules Incorporated Modified nonionic cellulose ethers
CA1163035A (fr) * 1980-04-07 1984-02-28 Albert R. Reid Suspensions aux polymeres solubles a l'eau
US5120328A (en) 1988-01-27 1992-06-09 The Dow Chemical Company Dense, self-reinforced silicon nitride ceramic prepared by pressureless or low pressure gas sintering
EP0384167B1 (fr) 1989-01-31 1994-07-06 Union Carbide Chemicals And Plastics Company, Inc. Polysaccharides avec groupes alkaryle ou aralkyle hydrophobes et compositions de latex les contenant
US5096490A (en) * 1990-04-30 1992-03-17 Aqualon Company Polymer/fatty acid fluid suspension
US5504123A (en) 1994-12-20 1996-04-02 Union Carbide Chemicals & Plastics Technology Corporation Dual functional cellulosic additives for latex compositions
DE19525870A1 (de) * 1995-07-15 1997-01-16 Grueter Hans Jochen Verfahren zur Herstellung einer Polysaccharid-Suspension
GB2318797A (en) * 1996-11-01 1998-05-06 Polycell Prod Ltd Liquid adhesive concentrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9845355A1 *

Also Published As

Publication number Publication date
LT99130A (en) 2000-04-25
AU6948598A (en) 1998-10-30
BR9808468A (pt) 2000-05-23
NO994718L (no) 1999-09-28
CN1257521A (zh) 2000-06-21
IL132155A0 (en) 2001-03-19
NO994718D0 (no) 1999-09-28
KR20010006021A (ko) 2001-01-15
WO1998045355A1 (fr) 1998-10-15
CA2285616A1 (fr) 1998-10-15
JP2001503101A (ja) 2001-03-06
PL335908A1 (en) 2000-05-22
LT4700B (lt) 2000-09-25

Similar Documents

Publication Publication Date Title
US6306933B1 (en) Cellulose ether slurries
US5583214A (en) Dual functional cellulosic additives for latex compositions
US5164433A (en) Rheological agents and thickeners
EP0562341B1 (fr) Suspension fluidisée de polymères pour la fabrication en continu d'une composition de revêtement
US5112400A (en) Clay thickener for use in water-based systems and joint compounds containing such compositions
CA2174629A1 (fr) Formulations de latex epaissies avec de l'alumine
US20090071369A1 (en) Non-Aqueous Slurries Used as Thickeners and Defoamers
EP3191562B1 (fr) Composition de liant et formulation de peinture fabriquée à partir de celle-ci
EP0973821A1 (fr) Coulis d'ethers de cellulose
WO2022182746A9 (fr) Compositions de modificateur de rhéologie de polymère d'acrylamide et compositions de revêtement architectural dérivées de celles-ci
CZ9903519A3 (cs) Suspenze etheru celulózy
WO2022182726A1 (fr) Émulsions inverses de polymère d'acrylamide contenant des modificateurs de rhéologie et compositions de revêtement architectural dérivées de ces dernières
US20240132740A1 (en) Rheology modifier compositions and architectural coating compositions derived therefrom

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990921

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20000714

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20001125