Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/34—Organic impregnating agents
  • B27K3/50—Mixtures of different organic impregnating agents
• • 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
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
  • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
  • C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
  • C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
  • C04B41/4922—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K2240/00—Purpose of the treatment
  • B27K2240/70—Hydrophobation treatment
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/02—Processes; Apparatus
  • B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents

Definitions

• the invention relates to non-film-forming formulations based on organosilicon compounds, processes for their preparation and their use, in particular for
• Silanes and siloxanes have long been used for the protection of buildings, for example solutions of silanes in organic solvents ⁇ agents, as described for example in DE-A 1,069,057th
• EP-A 234 024 describes silane emulsions with nonionic emulsifiers which have an HLB of 4 to 15.
• alkylalkoxysilanes optionally siloxanes, and nonionic and cationic emulsifiers.
• the hydrophobizing agent must reduce the water absorption of the building material by the desired amount at least to 20% compared to the non-treated building material.
• the waterproofing agent must not form a film on the surface in order not to influence or even eliminate the water vapor permeability too much.
• the penetration depth into the building material should be more than one mm, so that the
• Hydrophobing is not ineffective even after a short time due to natural weathering. And last but not least, the building protection product must have the visual appearance of the
• R may be the same or different and represents monovalent, SiC-bonded hydrocarbon radicals having at least 4 carbon atoms,
• R 1 may be the same or different and monovalent, SiC-bonded hydrocarbon radicals having 1 to 4
• R 2 may be the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having 1 to 4 carbon atoms,
• a is 1, 2 or 3, preferably 1, and
• b is 0, 1 or 2, preferably 0 or 1,
• R 3 is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having 1 to 8 carbon atoms,
• R 4 is the same or different and is a hydrogen atom or a monovalent hydrocarbon radical having 1 to 8 carbon atoms, and
• n is an integer from 1 to 4,
• component (B) is used in amounts of from 0.1 to 20% by weight, based on the total weight of component (A) used.
• Glycols and / or glycol ethers based on the total weight of the alkylalkoxysilanes used, is used.
• formulations of the invention are in
• formulations according to the invention preferably consist of
• R is a hydrocarbon radical of 6 to 18 carbon atoms, more preferably one
• Hydrocarbon radical having 8 to 14 carbon atoms.
• R is an n-alkyl, iso-alkyl, aryl or
• Aralkyl radicals having at least 4 carbon atoms, preferably having 6 to 18 carbon atoms, particularly preferably having 8 to 14 carbon atoms.
• radical R examples include the n-hexyl radical, n-octyl radical and iso-octyl radical, such as the 2, 2, 4-trimethylpentyl radical, n-decyl radical, n-dodecyl radical, n-tetradecyl radical, n-hexadecyl radical and the
• the radical R 1 is preferably an optionally substituted alkyl radical having 1 to 4 carbon atoms, preferably a methyl, ethyl, n-butyl or isopropyl radical, in particular a
• substituted alkyl radicals are alkyl radicals substituted by an oxygen atom, such as
• the radical R 2 is a hydrogen atom or an optionally substituted with organyloxy groups alkyl radical having 1 to 4 carbon atoms, preferably a hydrogen atom, a methyl, ethyl, n-butyl or i-propyl radical, in particular a hydrogen atom, a methyl or ethyl radical ,
• alkyl radicals substituted with organyloxy groups are the 2-methoxyethyl radical.
• Silanes of the formula (I) or their partial hydrolysates are commercially available or can be prepared by generally known chemical methods.
• silanes used in this invention (A) are isobutyltriethoxysilane, hexyltriethoxysilane, Hexylmethyl- diethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-Octyltributoxysilan, isooctyltriethoxysilane, n-decyl triethoxysilane, dodecylmethyldimethoxysilane, trimethoxysilane hexadecyl, octadecylmethyldimethoxysilane, octadecyl methyldiethoxysilane and octadecyltriethoxysilane ,
• Component (A) is preferably n-hexyltriethoxysilane, n-octyltriethoxysilane and isooctyltriethoxysilane and also their partial hydrolysates, where n-
• Octyltriethoxysilane and isooctyltriethoxysilane and their Generalhydrolysate are particularly preferred.
• component (A) is partial hydrolysates, those having 2 to 10 Si atoms are preferred. Partial hydrolysates usually arise from the fact that a part of the radicals OR 2 in the silanes of the formula (I) by reaction with water or
• oligomers which, in addition to groups OR 2, may also contain OH groups.
• Partial hydrolysates of silanes of the formula (I) may also be present as an impurity in the silane of the formula (I).
• R 3 is optionally substituted
• Alkyl radical having 1 to 4 carbon atoms preferably R 3 is a methyl, ethyl, n-butyl, n-hexyl or isopropyl radical.
• radical R 4 is a hydrogen atom or an alkyl radical having 1 to 4 carbon atoms, preferably a hydrogen atom or a methyl, ethyl, n-butyl or i-propyl radical, particularly preferably a hydrogen atom, a methyl or ethyl radical.
• n is preferably 1, 2, 3 or 4, preferably 1 or 2.
• glycols and glycol ethers (B) are ethane-1,2-diol, propane-1,2-diol, butane-1,2-diol, hexane-1,2-diol,
• Diethylene glycol monobutyl ether Diethylene glycol monobutyl ether is particularly preferred.
• the non-film-forming formulations may also be aqueous dispersions and in addition to the components (A) and (B)
• emulsifiers (C) it is possible to use all emulsifiers which have hitherto been used for the preparation of siloxane dispersions.
• emulsifiers (C) can anionic, nonionic, cationic and amphoteric surfactants or their
• Polyvinyl alcohols in particular polyvinyl alcohols having a degree of saponification of 75-95%, can be used.
• the emulsifiers (C) are preferably
• nonionic emulsifiers or mixtures of nonionic emulsifiers and ionic emulsifiers.
• nonionic emulsifiers (C) used according to the invention are sorbitan fatty acid esters, ethoxylated sorbitan fatty acid esters, ethoxylated fatty acids, ethoxylated linear or branched alcohols having 10 to 20 carbon atoms, ethoxylated alkylphenols, pentaerythritol fatty acid esters, glycerol esters and alkylpolyglycosides.
• nonionic emulsifiers (C) to sorbitan fatty acid esters, ethoxylated sorbitan fatty acid esters, ethoxylated fatty acids, ethoxylated linear or branched alcohols having 10 to 20 carbon atoms and ethoxy ⁇ profiled triglycerides.
• the formulations according to the invention preferably contain no ethoxylated alkylphenols, since these are known to be environmentally incompatible.
• nonionic emulsifiers When nonionic emulsifiers are used as component (C), it may be just one type of nonionic emulsifier or a mixture of several nonionic emulsifiers. Preferably, at least one
• nonionic emulsifier (C) has an HLB value of greater than or equal to 12, in particular greater than or equal to 14, and is optionally used in admixture with nonionic emulsifiers having an HLB value less than 12.
• emulsifiers (C) are mixtures of nonionic emulsifiers, of which at least one emulsifier has an HLB value greater than or equal to 12.
• the proportion of emulsifiers (C) having an HLB value greater than or equal to 12 in the emulsifier mixture (C) is preferably at least 30% by weight.
• the HLB value expresses the balance between hydrophilic and hydrophobic groups of an emulsifier.
• the definition the HLB value and methods for their determination are well known and described, for example, in Journal of Colloid and Interface Science 298 (2006) 441-450 and the literature cited therein.
• anionic emulsifiers e.g. Alklysulfonate, alkyl sulfates and alkyl phosphates are used.
• cationic emulsifiers are all known quaternary ammonium compounds containing at least one
• substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms such as
• cationic emulsifiers are used as component (C), these are preferably aryl or alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and cetyltrimethylammonium chloride, particularly preferred
• Benzyltrialkylammoniumsalze in particular trimethylbenzyl ammonium chloride and trimethylbenzylammonium methosulfate.
• quaternary imidazolinium compounds which carry at least one substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms, such as 1-methyl-2-stearyl-3-stearylamidoethylimidazolinium methosulfate, 1-methyl-2-norstearyl-3 stearyl-amido-ethyl-imidazolinium methosulfate, 1-methyl-2-oleyl-3-oleyl-amido-ethyl-imidazolinum-methosulfate,
• formulations according to the invention contain components (C) then in amounts of preferably 0.1 to 15 wt .-%, particularly preferably 0.3 to 8 wt .-%, each based on the total amount of the formulation.
• the water (D) used in the dispersions may be any type of water, such as natural waters, e.g. Rainwater, groundwater, spring water, river water and seawater, chemical waters, e.g. demineralized water, distilled or (multiply) redistilled water, water for medical or pharmaceutical purposes, e.g. purified water (Aqua purificata, Pharm. Eur. 3), aqua deionisata, aqua distillata, aqua bidestillata, aqua ad injectionam or aqua conservata, drinking water according to the German Drinking Water Ordinance and mineral waters.
• natural waters e.g. Rainwater, groundwater, spring water, river water and seawater
• chemical waters e.g. demineralized water, distilled or (multiply) redistilled water
• water for medical or pharmaceutical purposes e.g. purified water (Aqua purificata, Pharm. Eur. 3), aqua deionisata, aqua distillata, aqua bidestillata, aqua ad injectionam
• the water (D) used is preferably water having a conductivity of less than 10 S / cm, in particular less than 2 pS / cm.
• formulations according to the invention are aqueous dispersions, they contain water (D) in amounts of preferably 10 to 95% by weight, preferably 30 to 60% by weight, in each case based on the total amount of dispersion.
• water (D) is less than 30%, so that stable creamy products are obtained, which are particularly advantageous where a hydrophobic impregnation to vertical or water-repellent impregnation
• these creams according to the invention have a yield strength, determined by oscillating viscosity measurement according to DIN 54458, of at least 5 Pa, in particular at least 10 Pa.
• the formulations according to the invention preferably if they are aqueous dispersions, can
• the silanes (E) which may optionally be used according to the invention may be any, hitherto known, silanes which do not correspond to the formula (I), e.g. Alkoxysilanes such as tetraethoxysilane, alkylalkoxysilanes containing an alkyl radical of from 1 to 3 carbon atoms, e.g.
• Methyltrimethoxysilane or propylmethyldiethoxysilane, or containing substituted hydrocarbon radicals e.g.
• the formulations according to the invention preferably contain at most 1% by weight of silanes (E) which do not correspond to the formula (I), based on the amount of silane (A) of the formula (I).
• formulations according to the invention preferably if they are aqueous dispersions, can
• polyorganosiloxanes is intended to encompass both polymeric, oligomeric and dimeric organosiloxanes.
• Polyorganosiloxanes (F) may be any, hitherto known linear, cyclic and branched polyorganosiloxanes act.
• the polyorganosiloxanes (F) are preferably those which are selected from units of the formula
• R 5 c (R s O) d SiO (4- cd) / 2 (HD) wherein R 5 may be the same or different and is a hydrogen atom or a monovalent, SiC-bonded, optionally substituted hydrocarbon radical having 1 to 18 carbon atoms, in particular the methyl, isooctyl, or phenyl radical, means
• R 6 may be the same or different and is a hydrogen atom or a monovalent, optionally substituted
• Hydrocarbon radical having 1 to 4 carbon atoms Hydrocarbon radical having 1 to 4 carbon atoms
• c is 0, 1, 2 or 3, preferably 1, 2 or 3,
• d is 0, 1, 2 or 3, preferably 0 or 1
• the sum c + d is less than or equal to 3.
• the component (F) consisting of units of the formula (III) is preferably a liquid having a viscosity at 25 ° C. of from 5 to 10 000 000 mPas, preferably from 50 to 100 000 mPas, or a solid.
• Polydimethylsiloxanes which may contain hydroxyl groups and / or aminoalkyl groups, and silicone resins, which consist predominantly of trifunctional siloxane units.
• linear polyorganosiloxanes (F) with hydroxyl-terminated polydimethylsiloxanes having a viscosity of 20 to 200 mPas (25 ° C) or Aminoethylaminopropyl phenomenon carrying polydimethylsiloxanes having a viscosity of 100 to 5000 mPas (25 ° C) can be used.
• the formulations according to the invention preferably contain no polyorganosiloxanes (F) with more than 0.5% by weight of basic nitrogen, preferably no polyorganosiloxanes with more than 0.3% by weight of basic nitrogen, more preferably none
• polyorganosiloxanes (F) with basic nitrogen are contained in the formulations, then their proportion is preferably less than 10% by weight, preferably less than 5% by weight, based on the total weight of components (A).
• Polyorganosiloxanes (F) are octamethylcyclotetrasiloxane
• Decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane preferably contain less than 0.1% by weight of cyclic siloxanes.
• Polyorganosiloxanes (F) are alkoxy group-containing
• Organopolysiloxanes e.g. through implementation of
• Alkyltrichlorosilanes or phenyltrichlorosilane with ethanol in water can be produced and molecular formulas such as
• CH 3 Si (OCH 2 CH 3 ) ⁇ , ⁇ , ⁇ or C 6 H 5 Si (OCH 2 CH 3 ) 0> 7 ⁇ , 2 correspond to oligomeric siloxanes, which by hydrolysis / condensation of
• the optionally used branched polyorganosiloxanes (F) are either at 25 ° C. and 1000 hPa solids or have at 25 ° C a viscosity of preferably 10 to 1,000,000 mPas, preferably 100 to 100,000 mPas, particularly preferably 1,000 to 50,000 mPas , or a weight average molecular weight Mw of preferably 1000 to 100,000 g / mol, preferably 2,000 to
• the silicone resins (F) optionally used according to the invention may be both solid and liquid at 23 ° C. and 1000 hPa, preference being given to using liquid silicone resins (F).
• the optionally used polyorganosiloxanes (F) are silicone resins, mixtures of high-viscosity silicone resins with low-viscosity silicone resins or silicone oils being particularly preferred. These mixtures have a viscosity of preferably 100 to 25 ° C
• 100,000 mPas in particular 1,000 to 10,000 mPas.
• formulations according to the invention contain polyorganosiloxanes (F), these are amounts of preferably 5 to 1000 parts by weight, more preferably 50 to 200
• formulations according to the invention preferably if they are aqueous dispersions, can (G) other substances selected from the group of
• optionally used thickeners (G) are polyacrylic acid, polyacrylates, cellulose ethers, such as
• Carboxymethyl cellulose and hydroxyethyl cellulose Carboxymethyl cellulose and hydroxyethyl cellulose, natural gums such as xanthan gum, and polyurethanes.
• optionally used catalysts (G) are amines and organometallic compounds, such as dibutyltin dilaurate.
• Adjustment of the pH (G) are aminosilanes as well as amines, such as monoethanolamine or alkali metal hydroxides. If it is necessary to ensure the constancy of the pH over an extended period of time, buffer systems such as salts of acetic acid, salts of phosphoric acid, salts of citric acid, in each case in combination with the free acid can be used depending on the desired pH become.
• the optionally used substances for adjusting the pH (G) are amines and
• Aminosilanes more preferably triethanolamine.
• component (G) is used to prepare the formulations according to the invention, these are amounts of preferably 0.01 to 5% by weight, particularly preferably 0.1 to 0.5% by weight, in each case based on the total amount of Formulation.
• the dispersions of the invention preferably contain
• compositions according to the invention are preferably free from fluorinated organic compounds
• the formulations according to the invention are preferably free of water-immiscible solvents which do not correspond to the formula (II) or contain these water-immiscible solvents in amounts of at most 1% by weight, based on the total amount of the dispersion.
• water-immiscible solvents are to be understood as meaning all solvents which are soluble at 20 ° C. and a pressure of 101.325 kPa with water in amounts of not more than 1 g / l.
• these water-immiscible solvents have a vapor pressure of 0.1 kPa or higher at 20 ° C.
• water-immiscible solvents examples include benzene, toluene, xylene, hexane, cyclohexane and paraffinic hydrocarbon mixtures.
• the dispersions according to the invention preferably contain no components beyond components (A) to (G).
• the components used according to the invention may each be one type of such a component as well as a mixture of at least two types of a respective component.
• non-film-forming formulations of the invention are prepared by mixing the components (A) and (B) and optionally (C) and optionally (D) and optionally (E) and optionally (F) and optionally (G) become. If the formulations according to the invention are aqueous dispersions, the preparation of these aqueouss takes place
• the preparation is carried out by simply stirring all components at temperatures of preferably 1 to 50 ° C and optionally subsequent homogenization, e.g. with jet dispersers, rotor-stator homogenizers at peripheral speeds of preferably 5 to 40 m / s, colloid mills or high-pressure homogenizers at homogenization pressures of preferably 50 to 2000 bar.
• homogenization e.g. with jet dispersers, rotor-stator homogenizers at peripheral speeds of preferably 5 to 40 m / s, colloid mills or high-pressure homogenizers at homogenization pressures of preferably 50 to 2000 bar.
• the components (A), (B), optionally (E) and optionally (F) are homogeneously mixed. This mixture then becomes one
• Components are preferably mixed with a high speed stirrer, e.g. a dissolver disk or a rotor-stator homogenizer mixed. This is preferably followed by homogenization with a high-pressure homogenizer.
• a high speed stirrer e.g. a dissolver disk or a rotor-stator homogenizer mixed. This is preferably followed by homogenization with a high-pressure homogenizer.
• the optional component (G) can be added at any time during the process.
• inventive method are components (C) and a
• the optional component (G) can be any one of the components (A), (B), optionally (E) and optionally (F) added and mixed homogeneously and then the remaining amounts of components (D) was added, mixed and homogenized .
• the optional component (G) can be any one of the components (A), (B), optionally (E) and optionally (F) added and mixed homogeneously and then the remaining amounts of components (D) was added, mixed and homogenized ,
• the optional component (G) can be any one of the component (D) presented, successively or jointly components (A), (B), optionally (E) and optionally (F) added and mixed homogeneously and then the remaining amounts of components (D) was added, mixed and homogenized .
• the optional component (G) can be any one of the component (G) presented, successively or jointly components (A), (B), optionally (E) and optionally (F) added and mixed homogeneously and then the remaining amounts of components (D) was added, mixed and homogenized .
• the dispersions of the invention are preferably milky, white to beige liquids.
• the dispersions according to the invention have a pH of preferably from 5 to 9, in particular from 6 to 8.
• the dispersions of the invention have a content of non-volatile compounds (for example determined according to ASTM D 5095) of preferably 10 to 90% by weight, particularly preferably 20 to 70% by weight.
• the dispersions according to the invention have a volume-average particle size of preferably 0.1 to 10 .mu.m, in particular from 0.3 to 1.5 .mu.m.
• the dispersity of the dispersions of the invention is in
• the dispersions of the invention have a viscosity of preferably less than 10,000 mPas, in particular less than 1,000 mPas, in each case measured at 25 ° C. according to DIN 53019-1.
• the formulations according to the invention have the advantage that they have a very high storage stability and do not cause discoloration.
• the formulations of the invention have the advantage that they do not form films and the water vapor permeability of the Building material received.
• the formulations according to the invention have the advantage that they can be produced inexpensively.
• the formulations according to the invention have the advantage that they are easy to handle.
• the formulations according to the invention have the advantage that they are easily dilutable and have a very high storage stability even in dilute form.
• the formulations according to the invention have the advantage that they have a very good and stable impregnation effect and a very good penetration behavior on different substrates.
• formulations according to the invention can be used for all purposes for which formulations based on organosilicon compounds have hitherto also been used. They are e.g. Excellent as a building protection agent, in particular for hydrophobing various mineral or organic substrates.
• the manner of using such dispersions is known to the person skilled in the art.
• Another object of the present invention is a process for the treatment of substrates, in which the substrates are brought into contact with the non-film-forming formulations according to the invention.
• Formulations that can be treated are mineral substances, such as masonry, mortar, brick, limestone, marble, limestone, sandstone, granite, porphyry, and concrete Aerated concrete, and organic materials such as wood, paper, cardboard, textiles, synthetic and natural fibers.
• the dispersions in the process according to the invention penetrate into the capillaries of the substrate and dry there.
• the treatment according to the invention is preferably a hydrophobic impregnation, coating,
• Priming or injecting more preferably a hydrophobic impregnation, wherein in particular the substrate is brought into contact with the dispersion and the dispersion penetrates partially or completely into the substrate.
• hydrophobic impregnation according to the invention can be used as impregnation of the surface of mineral materials and wood-based materials or as impregnation of mineral
• Wood materials e.g. concrete or roof tiles
• the Wasserauf ⁇ acquisition of the substrate is drastically reduced, which lowers the thermal conductivity, but also prevents the destruction of building materials by the influence of frost and thaw cycles or salt or wood materials by rot or fungal infestation. This not only ensures the value of the material treated in this way, but also low energy consumption during heating or air conditioning, for example.
• the application of the formulations according to the invention for the impregnation of building materials can also serve before, after or simultaneously for the use of stone hardeners; For example, it is possible to first solidify a building material consisting of loam with water glass and then to hydrophobicize it with the formulations according to the invention.
• the formulations according to the invention are prepared by conventional and hitherto known methods of distribution to the surface of the
• Substrates are given, such. by brushing, spraying, knife-coating, rolling, pouring, filling, dipping and rolling.
• the property of entering the masonry may be a material property or intrusion
• formulations according to the invention in particular as aqueous dispersions, can also be used for the formulation of paints in combinations with organic dispersions and pigments in order to render these paints hydrophobic
• the application of the formulation according to the invention can be concentrated or carried out in diluted form.
• aqueous dispersions can be used concentrated or diluted with water.
• the content of component (A) in the dispersion used is preferably from 2 to 35% by weight, in particular from 5 to 20% by weight.
• the process for treating substrates has the advantage that it is efficient and inexpensive, and that the substrates are long-term protected from the influence of water.
• Isooctyltriethoxysilane (available under the name SILRES® BS 1701 from Wacker Chemie AG) is mixed with 1% by weight of ethylene glycol (Example 1), with 1% by weight of diethylene glycol monobutyl ether
• Example 6 is repeated, but no diethylene glycol monobutyl ether is used.
• the particle size was 1.09 ⁇ m.
• Example 6 is repeated, but instead of 5 parts of diethylene glycol monobutyl ether, 1 part of ethylene glycol monobutyl ether is used.
• the particle size was 0.90 ⁇
• Methyl silicone resin that consists of 90 mol% trifunctional
• Siloxane units of CH 3 Si0 3/2 10% difunctional siloxane units of the formula (CH 3) 2 Si0 2/2, having a weight average molecular weight of 6700 g / mol and a content of ethoxy groups of 3.1 wt .-%, and of hydroxyl groups of 0, 57 wt.%, And 0.25 parts of aminoethyl-aminopropyltriethoxysilane.
• cetyltrimethylammonium chloride 40 parts of water with an Ultra-Turrax processed into an emulsion.
• 4 parts of a 50% aqueous emulsion of an amino-containing polydimethylsiloxane having a viscosity of 500 mPas and an amine number of 0.15 meq / g available under the name SILRES® BS 1306 from Wacker Chemie AG, D-Munich ) was added.
• the emulsion is homogenized with a high-pressure homogenizer (APV 2000, Invensys APV Unna) at 200 bar.
• the volume average particle size was 0, pm.
• the volume-average particle size was 0.39 ⁇ .
• Examples 8 and 9 were diluted to 7.5% solids and bricks were impregnated by immersion in these emulsions for five minutes. The results are summarized in Table 3.

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• Chemical & Material Sciences (AREA)
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• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Paints Or Removers (AREA)

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Citations (5)

• 2012
  • 2012-07-30 DE DE102012213377.1A patent/DE102012213377A1/de not_active Withdrawn
• 2013
  • 2013-07-22 WO PCT/EP2013/065414 patent/WO2014019878A1/fr not_active Ceased

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