Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• • 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
  • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/2805—Compounds having only one group containing active hydrogen
  • C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
  • C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/71—Monoisocyanates or monoisothiocyanates
  • C08G18/718—Monoisocyanates or monoisothiocyanates containing silicon
• • 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
  • C09D201/00—Coating compositions based on unspecified macromolecular compounds
  • C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
  • C09D201/10—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing hydrolysable silane groups
• • 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
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/34—Filling pastes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J201/00—Adhesives based on unspecified macromolecular compounds
  • C09J201/02—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
  • C09J201/10—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing hydrolysable silane groups
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K3/00—Materials not provided for elsewhere
  • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
  • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
  • C09K3/1021—Polyurethanes or derivatives thereof
• • 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
  • C08J2300/00—Characterised by the use of unspecified polymers
  • C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
  • C08J2300/108—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing hydrolysable silane groups

Definitions

• the invention relates to a polymer dispersion comprising water and at least 60% by weight of an organic polymer which comprises at least one group of the general formula I.
• A is CH 2 or a linear or branched, saturated or unsaturated alkylene radical having 2 to about 12 C atoms or an arylene radical having about 6 to about 18 C atoms or an arylene alkylene radical having about 7 to about 19 C atoms
• Z represents CH 3 , O-CH 3 or a linear or branched, saturated or unsaturated alkyl radical or alkoxy radical having 2 to about 12 carbon atoms and n represents 0, 1 or 2, or a condensation product of at least two such groups.
• the invention also relates to a composition which has an organic polymer which has at least one group of the general formula I and contains at least one further organic polymer or a mixture of two or more further organic polymers.
• Silane-terminated, moisture-curing one-component polyurethane compositions are increasingly being used as flexible coating, sealing and adhesive compositions in construction and in the automotive industry.
• Such Applications place high demands on the stretchability and adhesive power as well as on the curing speed.
• silane-terminated polymers often have water-repellent properties, which give the sealing, coating or adhesive compositions prepared therefrom excellent water resistance and heat resistance.
• Alkoxysilane-terminated polymers are known from the prior art and are used as soft-elastic sealing, coating and adhesive compositions.
• EP-B 0 549 626 describes alkoxysilane-terminated, moisture-curing one-component polyurethanes which are used, for example, as joint sealing compounds.
• the disclosed compounds have a quick skin formation and quick stickiness, even after prolonged storage.
• a disadvantage of the compounds described, however, is that, because of their reactive end groups, they have to be stored with the exclusion of moisture and there is a risk of irreversible changes in properties over a longer storage period.
• DE-A 36 37 836 describes an aqueous silicone dispersion which can be obtained from an OH-terminated polydiorganosiloxane, (organo) metal compounds and a siliconate.
• the products described have a curing time of at least one day.
• Polymers which have at least one group of the general formula -A-Si (Z) n (OH) 3-n are not disclosed in the publication.
• DE-C 42 15 648 relates to a dispersion of alkoxysilane-terminated polymers which have amino groups capable of salt formation in the polymer chain. Dispersions with a maximum solids content of 41 are described % By weight. If such dispersions are used for the bonding of absorbent materials, the high water content leads to a high loading of the substrate with water. In the case of paper gluing, for example, this can lead to shape changes in the substrate which are not desired.
• WO 91/08244 relates to stone protection agents which contain polyurethanes terminated by alkoxysilane groups.
• the polymer contents of the dispersions described are very low and are between 5 and 30% by weight.
• the dispersions have a pH of> 10. The dispersions described are therefore neither usable as surface coating agents in the sense of producing mechanically resilient coatings, nor as a sealant or adhesive.
• DE-US 25 58 653 relates to silanol-containing urethane dispersions.
• the polyurethanes described have hydrolyzable or hydrolyzed silyl end groups and have solubilizing or emulsifying groups, in particular carboxyl groups, in the polymer backbone.
• the dispersions described have polymer contents of up to about 40% by weight.
• the polymers described must also have urea groups which are produced in water by chain extension of a prepolymer with isocyanate end groups.
• the compounds described show a strong formation of coagulum and have only unsatisfactory water resistance.
• the problem with all dispersions of silanol-terminated polyurethanes known from the prior art is that only low solids contents can be achieved.
• low solids contents have a number of disadvantages, the remedy of which was the object of the present invention.
• This object is achieved by a polymer dispersion comprising water and at least 60% by weight of an organic polymer with at least one group of the general formula -A-Si (Z) n (OH) 3 . n (Formula I).
• the present invention thus relates to a polymer dispersion comprising water and at least 60% by weight of an organic polymer which comprises at least one group of the general formula I.
• A is CH 2 or a linear or branched, saturated or unsaturated alkylene radical with 2 to about 12 C atoms or for an arylene radical with about 6 to about 18 C atoms or an arylene alkylene radical with about 7 to about 19 C atoms or a siloxane radical substituted with alkyl, cycloalkyl or aryl groups and having about 1 to about 20 Si atoms, Z for CH 3 , O-CH 3 or for a linear or branched, saturated or unsaturated alkyl radical or alkoxy radical with 2 to about 12 C atoms and n is 0, 1 or 2, or a condensation product has at least two such groups.
• Suitable organic polymers which have at least one group of the general formula I are all organic polymers which are dispersible in water by means of suitable methods.
• the composition according to the invention contains, as an organic polymer, a polymer selected from the group consisting of polyurethanes, polyesters, polyamides, polyethers, polyacrylic acid esters, polymethacrylic acid esters, polystyrene, polybutadiene, polyethylene, polyvinyl esters, ethylene / ⁇ -olefin copolymers, styrene / Butadiene copolymers, styrene / acrylonitrile copolymers, ethylene / vinyl acetate copolymers, or a mixture of two or more of the polymers mentioned.
• the polymers mentioned can, as far as possible, be equipped with solubilizing groups, ie groups dissociable in water.
• solubilizing groups ie groups dissociable in water.
• the organic polymers either no groups dissociable in water on or, if such groups are present, the conditions in the polymer dispersion according to the invention are chosen such that the groups dissociable in water are not, or only to a minor extent, in dissociated form.
• a "group which can be dissociated in water” is understood to mean a functional group which dissociates into an anion and a cation in an acidic, neutral or basic aqueous solution.
• a polyurethane is used as the organic polymer.
• Suitable polyurethanes can be produced, for example, using the following building blocks:
• X represents a radical with at least one functional group reactive with isocyanates, for example at least one OH, SH, NH or COOH group or at least one group reactive with OH groups, for example at least one carboxyl, anhydride, NCO or oxirane group, or a mixture of two or more such groups
• Z for CH 3 , O-CH 3 or for a linear or branched - ten, saturated or unsaturated alkyl radical or alkoxy radical having 2 to about 12 C atoms
• R is CH 3 or a linear or branched, saturated or unsaturated alky
• chain extender (building block d), based on the weight of the polyurethane, can additionally be used.
• Suitable isocyanates are any organic compounds which have an average of more than one, in particular 2, isocyanate groups.
• Diisocyanates Q (NCO) 2 are preferably used, Q being an aliphatic, optionally substituted hydrocarbon radical having 4 to about 12 carbon atoms, an optionally substituted cycloaliphatic hydrocarbon radical having 6 to about 15 carbon atoms, an optionally substituted aromatic hydrocarbon radical having 6 to about 15 Carbon atoms or an optionally substituted araliphatic hydrocarbon radical having 7 to about 15 carbon atoms.
• diisocyanates examples include tetramethylene diisocyanate, hexamethylene diisocyanate (HDI), dodecamethylene diisocyanate, dimer fatty acid diisocyanate, 1,4-diisocyanatocyclohexane, 1-isocyanato-3,3,5-trimethyl-5-isocyanato-methylcyclohexane (isophorone diisocyanate, IPDI) '-Diisocyanatodicyclohexylmethyl, 4,4'-Diisocyanatodicyclohexylpropane-2,2,1,3- and 1,4-Diisocyanatobenzene, 2,4- or 2,6-Diisocyanatotoluene (2,4- or 2,6-TDI) or their mixture, 2,2 ' -, 2,4 or 4,4'-diisocyanato-diphenylmethane (MDI), tetramethylxylylene diis
• Aliphatic diisocyanates in particular m- and p-tetramethyl-xylylene diisocyanate (TMXDI) and isophorone diisocyanate (IPDI) are preferred. It is of course also possible to use the higher-functionality polyisocyanates known per se in polyurethane chemistry, or else modified polyisocyanates containing, for example, carbodiimide groups, allophanate groups, isocyanurate groups, urethane groups or biuret groups.
• TXDI m- and p-tetramethyl-xylylene diisocyanate
• IPDI isophorone diisocyanate
• Suitable building block (b) are OH-terminated polyols or polyol mixtures, as are known to the person skilled in the art of polyurethane production and can usually be used in the production of polyurethanes.
• polyols from the group of polyether polyols, polyester polyols, polyether ester polyols, polyalkylene diols, polycarbonates or polyacetals, or a mixture of two or more thereof, each with 2, 3, 4 or more OH groups can be used.
• polyester polyols can be prepared by reacting dicarboxylic acids with diols or higher polyols or a mixture of diols and higher polyols or an excess of diols or higher polyols or their mixture, and also by ring opening epoxidized esters, for example epoxidized fatty acid esters, with alcohols become.
• Polycaprolactone diols for example those which can be prepared from ⁇ -caprolactone and diols or higher polyols, are also suitable as polyester polyols.
• polyester polyols can be used which consist of low molecular weight dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, isophthalic acid, terephthalic acid or phthalic acid, or a mixture of two or more thereof, with an excess of linear or branched, saturated or unsaturated aliphatic Diols of about 2 to about 12 carbon atoms are available. If necessary, a small proportion of higher alcohols may still be present in the production of the polyester polyols. as glycerin, trimethylolpropane, triethylolpropane, pentaerythritol or sugar alcohols, such as sorbitol, mannitol or glucose.
• dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, isophthalic acid, terephthalic acid or phthalic acid, or a mixture of two or more thereof.
• dicarboxylic acids such as succinic acid
• polyacetals are the polycondensation products of formaldehyde and diols or polyols or their mixtures in the presence of acidic catalysts.
• Polyalkylene diols such as polybutadiene diol are commercially available products that are offered in various molecular weights. In the context of the present invention, they are suitable, for example, as a polyol component in the production of polyurethanes, as can be used in the dispersions according to the invention.
• Polyether polyols can be obtained, for example, by homo-, co- or block polymerization of alkylene oxides such as ethylene oxide, propylene oxide or butylene oxide, or mixtures of two or more thereof, or by reacting polyalkylene glycols with di- or trifunctional alcohols.
• alkylene oxides such as ethylene oxide, propylene oxide or butylene oxide, or mixtures of two or more thereof, or by reacting polyalkylene glycols with di- or trifunctional alcohols.
• the polymerized ring opening products of cyclic ethers, for example tetrahydrofuran, with corresponding alcohols as starter molecules are also suitable.
• ester compounds for example oligo- or polyester, are used as starter molecules, polyether esters are obtained which have both ethers and ester groups.
• the compounds mentioned can also be used as a polyol component in the production of polyurethanes, as can be used in the dispersions according to the invention in the context of the present invention.
• the alkoxylation products in particular the ethoxylation or propoxylation products of di- or trifunctional alcohols, are used as polyether polyols in the production of polyurethanes.
• di- or trifunctional alcohols in particular alcohols selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1, 2-propanediol, dipropylene glycol, the isomeric butanediols, hexanediols, octanediols, technical mixtures of hydroxy fatty alcohols with 14 to 22 carbon atoms, in particular hydroxystearyl alcohol, trimethylol propane or glycerol or mixtures of two or more of the alcohols mentioned.
• polyols with an average molecular weight of about 300 to about 80,000, in particular from about 1,000 to about 40,000 are used to produce the polyurethanes.
• Good properties for the resulting dispersions according to the invention are obtained, for example, when using OH-terminated, linear polyols, for example mixtures of two or more polyols which contain at least some of the polypropylene glycol with a molecular weight of about 2,000 to 30,000.
• the OH-terminated polyols used to prepare the polyurethanes contain polypropylene glycol with an average molecular weight of about 2,000 to about 40,000 in a proportion of more than 50% by weight, preferably more than 70% by weight, based on the total polyol mixture. In a further embodiment of the invention, mixtures of different polypropylene glycols with different molecular weights can also be used.
• linear or branched, saturated or unsaturated aliphatic, monofunctional alcohols in particular methanol, ethanol, the isomers of propanol, butanol or hexanol, and fatty alcohols with about 8 to about, can also be used in part, preferably in minor amounts 22 carbon atoms, for example octanol, decanol, dodecanol, tetradecanol, hexadecanol or octadecanol can be used.
• the above Fatty alcohols can be obtained, for example, by reducing natural fatty acids and can be used both as pure substances and in the form of their technical mixtures.
• Linear monoalcohols for example, and in particular those with about 4 to about 18 C atoms, are particularly suitable.
• monoalkyl polyether alcohols of different molecular weights, preferably in the molecular weight ranges from about 1,000 to about 2,000, can be used.
• building block b) are polyhydric alcohols, such as those obtainable by hydrogenating di- or oligomeric fatty acids or their esters, castor oil, with C 1-4 alkyl alcohols, ring-opened, epoxidized fats or oils, C 12 . 18 -Fatty acid diethanolamides, monoglycerides of aliphatic C 8 . 22 - Fatty acids, polypropylene glycols or polysiloxanes with terminal OH groups, or mixtures of two or more of the compounds mentioned, can be used.
• polyhydric alcohols such as those obtainable by hydrogenating di- or oligomeric fatty acids or their esters, castor oil, with C 1-4 alkyl alcohols, ring-opened, epoxidized fats or oils, C 12 . 18 -Fatty acid diethanolamides, monoglycerides of aliphatic C 8 . 22 - Fatty acids, polypropylene glycols or polysiloxanes with terminal OH groups, or mixtures
• Polyhydric alcohols can be prepared by hydrogenating di- or oligomeric fatty acids or their esters, for example according to DE 17 68 313.
• Suitable starting materials are polymerization products of mono- or polyvalent, mono- or polyunsaturated fatty acids or their esters, or mixtures of two or more thereof. If desired, they can also contain saturated components in addition to unsaturated components.
• oleic acid examples include, for example, the polymerization products of oleic acid, linoleic acid, linolenic acid, palmitoleic acid, elaidic acid or erucic acid or of esters prepared from the fatty acids mentioned and preferably lower aliphatic alcohols (C 1-4 alcohols) or from fats or oils such as talc, olive oil, Fatty acid mixtures obtained from sunflower oil, soybean oil or cottonseed oil.
• fatty acids mentioned and preferably lower aliphatic alcohols (C 1-4 alcohols) or from fats or oils such as talc, olive oil, Fatty acid mixtures obtained from sunflower oil, soybean oil or cottonseed oil.
• talc lower aliphatic alcohols
• dimers are also used during the polymerizations carried out by known processes monomeric and oligomeric fatty acids or fatty acid esters.
• the polymerization products contain large amounts of monomeric fatty acids or their esters, it may be appropriate to separate them by distillation as alcoholic monomer components only after the hydrogenation.
• the hydrogenation of di- or oligomeric fatty acids and their esters are carried out, for example, in the presence of copper- or zinc-containing catalysts in conventional continuously operating pressure hydrogenators with a gas circuit.
• Ring-opened, oxidized fats or oils with C 1-4 alkyl alcohols can be produced from fats or oils with a high content of unsaturated fatty acid components, for example olive oil, soybean oil or sunflower oil, in a manner known per se.
• fats or oils are epoxidized, for example in accordance with the process described in DE-PS 857 364, by reaction with peracetic acid in the presence of acidic catalysts or with performic acid formed in situ from formic acid and hydrogen peroxide.
• the oxirane rings of the epoxidized fats or oils are then broken down with low molecular weight alcohols, for example with methanol, ethanol, propanol or butanol, with the formation of OH groups.
• C 12 .i 8 fatty acid diethanolamides which can be prepared by reacting C 12-18 fatty acids such as lauric acid, myristic acid, coconut fatty acid or oleic acid with diethanolamine (see, for example, Kirk-Othmer: "Encyclopaedia of Chemical Technology, Volume 22, pages 373-376, John Wiley and Sons, New York 1983) and monoglycerides of C8-C22 fatty acids which can be prepared by reacting fats or oils with glycerol, for example, lauric acid, coconut fatty acid, stearic acid, oleic acid or tallow fatty acid (see Kirk-Othmer.
• Suitable chain extenders are, for example, polyhydric alcohols such as ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1-hexanediol, 6, trimethylolpropane, glycerin, pentaerythritol, sorbitol, mannitol or glucose.
• polyhydric alcohols such as ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1-hexanediol, 6, trimethylolpropane, glycerin, pentaerythritol, sorbitol, mannitol or glucose.
• polyester diols such as succinic acid, glutaric acid or adipic acid bis (hydroxyethyl) ester, or a mixture of two or more thereof, or low molecular weight diols containing ether groups, such as diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol or tetrapropylene glycol can also be used as module d).
• Amines such as ethylenediamine, hexamethylene diamine, piperazine, 2,5-dimethylpiperazine, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane (isophoronediamine, IPDA), 4,4'-diamino-dicyclohexylmethane, 1 are also suitable , 4-diaminocyclohexane, 1, 2-diaminopropane, hydrazine, hydrazine hydrate, amino acid hydrazides such as 2-aminoacetic acid hydrazide or bis-hydrazides such as succinic acid bishydrazide.
• the amine or hydrazine building blocks d), which have no tertiary nitrogen, can also be used for the production of the polyurethanes in blocked form, ie in the form of the corresponding ketimines, ketazines or amine salts.
• Oxazolidines are capped diamines that can be used to manufacture the polyurethanes.
• the use of compounds which are trifunctional or higher in the sense of an isocyanate polyaddition reaction is possible in small proportions in order to achieve a certain degree of branching, as is the possible use of trifunctional or higher-functional polyisocyanates already mentioned for the same purpose.
• Monohydric alcohols such as n-butanol or n-dodecanol and stearyl alcohol can also be used in small amounts as a proportion of building block b).
• X represents, for example, a radical which has at least one OH, SH, NH 2 or anhydride group.
• X stands for OH, SH, H 2 N- (CH 2 ) 2 -NH, (HO-C 2 H 4 ) 2 N or NH 2
• A for CH 2 , CH 2 -CH 2 or CH 2 - CH 2 -CH 2
• Z stands for -CH 3 or -CH 2 -CH 3
• R stands for -CH 3 , -CH 2 -CH 3 or - CH 2 -CH 2 -CH 3 .
• the variable n stands for 0 or 1.
• Examples of suitable starting materials as building block c) are H 2 N- (CH 2 ) 3 - Si (O-CH 2 -CH 3 ) 3 , HO-CH (CH 3 ) -CH 2 -Si (OCH 3 ) 3 , HO - (CH 2 ) 3 -Si (O-CH 3 ) 3 , HO-CH 2 - CH 2 -O-CH 2 -CH 2 -Si (OCH 3 ), (HO-C 2 H 4 ) 2 N- ( CH 2 ) 3 -Si (O-CH 3 ) 3l HO- (C 2 H 4 -O) 3 -C 2 H 4 - N (CH 3 ) - (CH 2 ) 3 -Si (0-C 4 H 9 ) 3 , H 2 N-CH 2 -C 6 H 4 -CH 2 -CH 2 -Si (O-CH 3 ) 3 , HS- (CH 2 ) 3 -Si (O-CH 3 ) 3
• the component a) can be reacted in the presence of an organic, for example water-miscible, inert solvent, such as acetone or N-methylpyrrolidone. It is usually after the conversion of the polyurethane into the aqueous phase, ie. that is, after dispersion, removed by distillation. However, the polyurethane is advantageously produced without solvents.
• an organic for example water-miscible, inert solvent, such as acetone or N-methylpyrrolidone.
• component a) is first implemented with component b) (polyol component) to form a polyurethane prepolymer with terminal NCO groups. Then all or only some of the NCO groups of the prepolymer are reacted with the alkoxysilane component c). Thereafter, the alkoxysilane-terminated and possibly still free NCO groups Polyurethane prepolymers are converted into the aqueous phase by adding water, which may optionally additionally contain a chain extender.
• the temperature of the reaction in the first stage is generally about 5 to about 160 ° C, preferably about 50 to about 120 ° C.
• the reaction of the prepolymer with the alkoxysilane is carried out at about 50 to about 120 ° C.
• an emulsifier or a mixture of two or more emulsifiers should advantageously be present in the polyurethane or in the water.
• Anionic, cationic, nonionic or ampholytic emulsifiers or mixtures of two or more of these emulsifiers can be used.
• anionic emulsifiers are alkyl sulfates, in particular those with a chain length of about 8 to about 18 carbon atoms, alkyl and alkaryl ether sulfates with about 8 to about 18 carbon atoms in the hydrophobic radical and 1 to about 40 ethylene oxide (EO) or propylene oxide ( PO) units, or a mixture thereof, in the hydrophilic part of the molecule, sulfonates, in particular alkyl sulfonates, with about 8 to about 18 carbon atoms, alkylarylsulfonates with about 8 to about 18 carbon atoms, taurides, esters and half esters of sulfosuccinic acid with monohydric alcohols or alkylphenols with 4 to about 15 C atoms, which can optionally be ethoxylated with 1 to about 40 EO units, alkali and ammonium salts of carboxylic acids, for example fatty acids or resin acids with about 8 to about 32 C atoms or mixture
• the anionic emulsifiers used are alkyl and alkaryl phosphates with about 8 to about 22 carbon atoms in the organic radical, alkyl ether or alkaryl ether phosphates with about 8 to about 22 carbon atoms in the alkyl or alkaryl radical and 1 to about 40 EO units deployed.
• nonionic emulsifiers are polyvinyl alcohol, which still has 5 to about 50%, for example about 8 to about 20%, acetate units and a degree of polymerization of about 200 to about 5,000, alkyl polyglycol ethers, preferred such as those with about 8 to about 40 EO units and alkyl radicals with about 8 to about 20 C atoms, alkylaryl polyglycol ethers, preferably those with about 8 to about 40 EO units and about 8 to about 20 C atoms in the alkyl or Aryl residues, ethylene oxide / propylene oxide (EO / PO) block copolymers, preferably those with about 8 to about 40 EO or PO units, addition products of alkylamines with alkyl residues of about 8 to about 22 carbon atoms with ethylene oxide or Propylene oxide, fatty and resin acids with about 6 to about 32 carbon atoms, alkyl polyglycosides with linear or branched, saturated or unsaturated alkyl radicals with an average
• cationic emulsifiers are salts of primary, secondary or tertiary fatty amines with about 8 to about 24 C atoms with acetic acid, sulfuric acid, hydrochloric acid or phosphoric acids, quaternary alkyl and alkylbenzene ammonium salts, in particular those whose alkyl groups are about 6 to about 24 C.
• halides in particular the halides, sulfates, phosphates or acetates, or mixtures of two or more thereof, alkylpyridinium, alkylimidazolinium or alkyloxazolidinium salts, in particular those whose alkyl chain has up to about 18 carbon atoms, for example the halides, sulfates, Phosphates or acetates, or a mixture of two or more thereof.
• ampholytic emulsifiers are long-chain substituted amino acids such as N-alkyl-di (aminoethyl) glycine or N-alkyl-2-aminopropionic acid salts, betaines such as N- (3-acylamidopropyl) -N, N-dimethylammonium salts with a C 8 . 18 - Acyl residue or alkylimidazolium betaines.
• the alkali salts especially the Na salt of the C 12/14 fatty alcohol ether sulfates, alkylphenol ether sulfates, especially their alkali or NH 4 salts, Na-n-dodecyl sulfate, di-K-oleic acid sulfonate (C 18 ), Na-n-alkyl- (C 10 C 13 ) -benzenesulfonate, Na-2-ethylhexyl sulfate, NH 4 -lauryl sulfate (C 8/14 ), Na-lauryl sulfate (C 12/14 ), Na-lauryl sulfate (C 12/16 ), Na lauryl sulfate (C 12/18 ), Na cetyl stearyl sulfate (C 16/18 ), Na oleyl cetyl sulfate (C 16/18 ), Na oleyl cetyl sulfate (C 16/18 ),
• nonionic and nonionic surfactants Mixtures of nonionic and nonionic surfactants, mixtures of nonionic surfactants, alkylaryl ether phosphates and their acidic esters, dihydroxystearic acid NH 4 salt, iso-eicosanol, aryl polyglycol ether, glycerol monostearate can also be used.
• a polyester or a polycarbonate is used as the organic polymer. All polyesters or polycarbonates with a molecular weight of at least about 200 g / mol are suitable as polyesters or as polycarbonates. The preparation of such polyesters and polycarbonates is known to the person skilled in the art.
• a polyester or a mixture of two or more polyesters or a mixture of one or more polyesters and a polyether or a mixture of two or more polyethers is used as the organic polymer.
• Suitable polyesters can be carried, for example, by reacting OH groups. the polyester polyols with suitably functionalized alkoxysilane compounds of the general formula III
• Y is a radical with at least one functional group reactive with OH groups, for example for at least one NCO group, halide group, oxirane group, acid anhydride group or acid halide group, and A, Z, R and n for the groups and values already mentioned above stand.
• Suitable polyester polyols can be obtained, for example, by reacting dicarboxylic acids with diols or higher polyols or a mixture of diols and higher polyols or an excess of diols or higher polyols or their mixture, and also by ring opening epoxidized esters, for example epoxidized fatty acid esters, with alcohols .
• Polycaprolactone diols for example which can be prepared from ⁇ -caprolactone and diols or higher polyols, are also suitable as polyester polyols.
• polyester polyols can be used which consist of low molecular weight dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, isophthalic acid, terephthalic acid or phthalic acid, or a mixture of two or more thereof, with an excess of linear or branched, saturated or unsaturated aliphatic diols of about 2 to about 12 carbon atoms are available.
• dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, isophthalic acid, terephthalic acid or phthalic acid, or a mixture of two or more thereof, with an excess of linear or branched, saturated or unsaturated aliphatic diols of about 2 to about 12 carbon atoms are available.
• polyester polyols include, for example, glycerol, trimethylolpropane, triethylolpropane, pentaerythritol or sugar alcohols such as sorbitol, mannitol or glucose.
• Polyester polyols suitable in a preferred embodiment of the present invention are essentially linear and have, for example, a molecular weight of about 1,000 to about 50,000 and an OH number of about 10 to about 200, for example about 20 to about 80.
• Suitable commercially available polyester polyols are, for example, Desmophen-2020-E, Desmophen-C-200, Baycoll-AD-2052 (manufacturer: Bayer AG) or Ravecarb-106 or -107 (manufacturer: Enichem), or mixtures of two or more of that.
• Suitable alkoxysilane compounds of the general formula III are, for example, CI- (CH 2 ) 3 -Si (O-CH 2 -CH 3 ) 3 , CI-CH (CH 3 ) -CH 2 -Si (OCH 3 ) 3 , CI- (CH 2 ) 3 -Si (O-CH 3 ) 3 , Cl- CH 2 -CH 2 -0-CH 2 -CH 2 -Si (OCH 3 ), (OCN-C 2 H 4 ) 2 N- (CH 2 ) 3 -Si (O-CH 3 ) 3 , OCN- (C 2 H 4 -O) 3 - C 2 H 4 -N (CH 3 ) - (CH 2 ) 3 -Si (OC 4 H 9 ) 3 , Br -CH 2 -C 6 H 4 -CH 2 -CH 2 -Si (O-CH 3 ) 3 , Br- (CH 2 ) 3 -Si (0- CH 3
• Corresponding alkoxysilane compounds of the general formula III which have more than one functional group reactive toward OH groups are also suitable.
• OCN-CH 2 -CH (NCO) - (CH 2 ) 3 -Si (O-CH 2 -CH 3 ) 3 OCN-CH- (CH 2 NCO) -CH 2 -Si (OCH 3 ) 3 , CI -CH 2 -CH (CI) - (CH 2 ) 3 -Si (O-CH 2 -CH 3 ) 3 , CI-CH- (CH 2 CI) - CH 2 -Si (OCH 3 ) 3 , CI-CH 2 -CH (CI) -CH 2 -CH 2 -O-CH 2 -CH 2 -Si (OCH 3 ), (CI-C 2 H 4 ) 2 N- (CH 2 ) 3 - Si (O-CH 3 ) 3 , CI-CH (C 2 H 4 CI) -CH 2 -Si (
• the silane group-containing polyesters or polycarbonates are converted into the dispersions according to the invention by dispersion in water. If the polyesters or polycarbonates have no water-dissociating groups, ie are not soluble or "self-dispersing", it is advantageous if one of the above-mentioned emulsifiers, or a mixture of two or more of the above-mentioned emulsifiers, is present in the water.
• polyethers are used as organic polymers.
• polyethers suitable in the context of the present invention include the alkylene oxide adducts of suitable starter compounds, for example water, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerol, 1,2,6-hexanetriol, 1,1,1-trimethylolethane, trimethylolpropane, pentaerythritol , Sorbitol, mannitol or glucose or higher polysaccharides.
• polyethers are used which, by polyaddition of ethylene oxide or propylene oxide or a mixture thereof, to the starter compounds mentioned, in particular the adducts of propylene oxide.
• Suitable polyethers are described, for example, in EP-B 0 184 829 and the documents mentioned therein, which, insofar as they deal with polyethers, form part of the disclosure of the present text.
• the polyethers have a molecular weight of about 300 to about 80,000.
• polyethers are used which have a viscosity (23 ° C., DVU-E type, spindle 9) of about 0.5 to about 30 Pa * s and a pH of about 5 to about 9 exhibit.
• the polyethers preferably used have a viscosity of approximately 0.1 to approximately 120 Pa * s.
• silane-terminated polyethers are prepared accordingly by reacting the polyether polyols with suitably functionalized silanes.
• Suitable silanes are, for example, the alkoxysilane compounds of the general formula III already mentioned above.
• Suitable silane-terminated polyethers are sold, for example, by the Kaneka company under the name MS Polymer®.
• polyethers with amino groups for example Jeffamine
• silyl groups which have one functionality from about 2 to about 6 and a molecular weight from about 500 to about 50,000, for example from about 1000 to about 20,000.
• polyamides are used as organic polymers.
• Polyamides can be prepared in a known manner by reacting dicarboxylic acids with diamines. Suitable dicarboxylic acids are, for example, the dicarboxylic acids already mentioned in the context of this text and suitable for the production of polyesters, in particular the dimer fatty acids.
• polyamides are used which can be obtained by reacting dimer fatty acids or their alkyl esters with alcohols having 1 to about 6 C atoms and alkylene diamines, in particular alkylene diamines having 2 to about 10 C atoms.
• the polyamides are equipped with corresponding alkoxysilane groups in the manner already described above for polyethers or polyesters.
• polyacrylic acid esters or polymethacrylic acid esters are used as organic polymers.
• Polyacrylic acid esters and polymethacrylic acid esters can be obtained in a manner known to the person skilled in the art by radical polymerization of corresponding esters of acrylic acid or methacrylic acid.
• Suitable esters of acrylic acid or methacrylic acid are, for example, the methyl ester, ethyl ester, propyl ester, butyl ester, pentyl ester, hexyl ester, heptyl ester, octyl ester, nonylester or decyl ester.
• alkoxysilane groups into the organic polymer can take place, for example, by polymerizing a correspondingly functionalized alkoxysilane into the polymer chain, as is described, for example, in EP-A 0 818496, the disclosure of which is considered to be part of the present text.
• Monomers suitable for this purpose are, for example, hydroxyethyl, hydroxypropyl, hydroxybutyl, hydroxypentyl, hydroxyhexyl, hydroxyheptyl or hydroxyoctyl esters of acrylic acid or methacrylic acid.
• the grafting reaction is also suitable for functionalizing polyacrylate esters or polymethacrylate esters with silyl groups.
• Grafting reactions are understood to mean reactions in which graft polymers are formed.
• Graft polymers arise e.g. B. when olefinically unsaturated compounds in the presence of prefabricated polymers, which as macroinitiators u. so that at the same time serve as graft substrates, are implemented in a radically initiated manner.
• the initiation can be initiated, for example, by chemical or thermal cleavage of peroxide or diazo groups on the polymer chain of the graft substrates and by the action of rays.
• the compounds used as polyacrylate esters or poly methacrylate esters with silyl groups in the context of the present invention have a molecular weight of at least about 200, for example at least about 300 or at least about 500.
• polyacrylate esters or polymethacrylate esters with silyl groups which have a molecular weight of less than about 1000 are used together with one or more of the polymers bearing silyl groups described in the context of the preceding text.
• polyolefins such as polyethylene which have at least one, for example two or more, silyl groups.
• Trialkoxy vinyl silanes are particularly suitable as olefinically unsaturated silyl derivatives.
• the abovementioned polymers bearing silyl groups can be used in the preparations according to the invention alone or as a mixture of two or more thereof.
• Dispersions of the organic polymers mentioned can be produced, for example, by appropriate dispersion of the polymers in water until the desired solids content is reached.
• certain systems for example with acrylate or methacrylate dispersions, it is also possible to carry out the preparation of the polymers in the context of an emulsion polymerization or dispersion polymerization and to reduce the solids content of the resulting dispersion by reducing the continuous phase to the desired value of at least about 60% by weight. to increase.
• Suitable organic polymers are, for example, polybutadienes, as can be obtained by polymerizing butadiene.
• the butadienes can be functionalized with alkoxysilane groups in accordance with the methodology already mentioned for the polyacrylates and polymethacrylates, for example by means of a grafting reaction.
• derivatives of fatty substances in particular fatty acid esters, as have already been described above, are used as organic polymers.
• Fatty substances with silyl groups can be, for example, by reacting silanes with unsaturated fatty substances, for example with rapeseed oil, soybean oil, linseed oil, get methyl ester.
• silanes with unsaturated fatty substances for example with rapeseed oil, soybean oil, linseed oil, get methyl ester.
• Corresponding fatty substances and a suitable process for their preparation are described, for example, in DE-A 42 09 325, the disclosure of which is considered to be part of the present text.
• fatty substances with silyl groups can be obtained by reacting appropriately functionalized fatty substances such as castor oil, maleic anhydride (MA) grafted triglycerides or epoxidized triglycerides with a suitably functionalized compound of the general formulas II or III.
• MA maleic anhydride
• polysiloxanes are used as organic polymers. Suitable polysiloxanes are described, for example, in DE-A 36 37 836 or in DE-C 195 07 416, the disclosure of which is considered to be part of the disclosure of the present text.
• polymers containing silane groups that are suitable and commercially available are Desmoseal LS 2237 (manufacturer: Bayer AG) or WITTON WSP-725 (manufacturer: Witton Chemical Co. Ltd.) KANEKA S 203, KANEKA MAX 450, KANEKA MAX 500, HANSE CHEMIE Polymer ST 50, HANSE CHEMIE Polymer OM 53, WITTON 627 or WITTON 725/80.
• the dispersion according to the invention contains more than about 60% by weight of the polymer bearing silane groups, for example at least about 65, at least about 70, at least about 75 or at least about 80% by weight.
• the content of polymers bearing silane groups can also be above the values mentioned, for example at least about 85 or 90% by weight.
• the abovementioned organic polymers can be used alone in the dispersion according to the invention.
• the polymers mentioned in dispersions which, in addition to the silane-containing polymer, also contain at least one further organic polymer or a mixture of two or more further organic polymers.
• Such a polymer dispersion according to the invention has the advantage over conventional polymer dispersions that even a small proportion of alkoxysilane-terminated polymers gives surface coatings, bonds or seals a significantly improved water resistance.
• the invention therefore furthermore relates to a polymer dispersion comprising water and at least one first organic polymer which comprises at least one group of the general formula I.
• A is CH 2 or a linear or branched, saturated or unsaturated alkylene radical having 2 to about 12 C atoms or an arylene radical having about 6 to about 18 C atoms or an arylene alkylene radical having about 7 to about 19 C atoms
• Z represents CH 3 , O-CH 3 or a linear or branched, saturated or unsaturated alkyl radical or alkoxy radical having 2 to about 12 carbon atoms and n represents 0, 1 or 2, or a condensation product of at least two such groups, and also another organic polymer or a mixture of two or more further organic polymers.
• the first organic polymer is a polymer selected from the group consisting of polyurethanes, polyesters, polyamides, polyethers, polyacrylic acid esters, polymethacrylic acid esters, polystyrene, polybutadienes, polyethylene, polyvinyl esters, ethylene / ⁇ -olefin copolymers, styrene / butadiene copolymers or ethylene / vinyl acetate copolymers, as have already been described above, are used.
• the total proportion of organic polymers in the dispersion is at least about 60% by weight.
• the proportion of alkoxysilane-terminated polymers is at least about 2% by weight, based on the total polymer content of the dispersion. However, the proportion can also be higher, for example at least about 5 or about 10% by weight, at least about 20% by weight, at least about 30% by weight or at least about 40% by weight or more. Based on the total proportion of organic polymers in the dispersion, the proportion of the first organic polymer is about 1 to about 99% by weight.
• the dispersions according to the invention are generally prepared by introducing the organic polymer carrying alkoxysilyl groups into water as a continuous phase, or by adding water to the corresponding organic polymer carrying alkoxysilyl groups or the mixture of two or more polymers, at least one of the polymers being an alkoxy - carries silyl group.
• the polymers bearing silyl groups can be used in a mixture with one or more water-soluble ionic or nonionic polymers.
• examples of such polymers are polyacrylates, polymethacrylates, polyacrylamides, polyvinyl alcohol and cellulose, soluble starch and their derivatives.
• non-ionic cellulose ethers are suitable, for example methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and the like.
• the cellulose derivatives can be alkoxylated, for example with a degree of alkoxylation of about 0.05 to 100.
• Suitable water-soluble starch derivatives are all appropriately modified natural starch types, for example starch from potatoes, corn, wheat, rice and the like, derivatives based on potato and / or corn starch being particularly suitable.
• polyvinyl alcohol optionally copolymerized with other ethylenically unsaturated monomers, for example with vinyl acetate. If water-insoluble monomers are copolymerized as comonomers, the amount in the copolymer is limited to the extent that the resulting copolymer must continue to be water-soluble.
• water-soluble proteins such as are obtainable, for example, by the partial hydrolysis of vegetable or animal protein-containing fibers.
• Casein, soy protein and their water-soluble derivatives are particularly suitable.
• alkoxysilyl group-bearing compounds When alkoxysilyl group-bearing compounds are introduced into water, there is generally essentially complete hydrolysis of the alkoxysilyl groups to give hydroxysilyl groups. Accordingly, there are no or essentially no alkoxysilane groups in the dispersions according to the invention. If appropriate, condensation of hydroxysilyl groups which are in close spatial proximity to one another can occur to a small extent in the dispersion following the hydrolysis. Such condensation can either take place between hydroxysilyl groups on different polymer molecules, but condensation between hydroxysilyl groups on the same polymer molecule can also take place.
• the polymer dispersions according to the invention can also contain one or more additives.
• Suitable additives are, for example, stabilizers, defoamers, antioxidants, photostabilizers, pigment distributors, fillers, low-molecular silanes as adhesion promoters, resins, waxes, tackifiers, pH regulators, plasticizers, dyes, indicator dyes, microbicides and the like.
• Suitable low-molecular silanes are compounds with a molecular weight of less than about 200, which have one or more silane groups.
• the low molecular weight silanes can be added to the preparation according to the invention either before the emulsion of the prepolymer in water or after the emulsification, for example as an emulsion of low molecular weight silanes in water.
• the preparation according to the invention can contain up to about 20% by weight of conventional additives.
• Suitable tackifiers are, for example, resins, terpene oligomers, coumarone / indene resins, aliphatic, petrochemical resins and modified phenolic resins.
• hydrocarbon resins are suitable, as are obtained by polymerizing terpenes, mainly a- or b-pinene, dipentene or limonene. These monomers are generally polymerized cationically with initiation using Friedel-Crafts catalysts.
• the terpene resins include, for example, copolymers of terpenes and other monomers, for example styrene, ⁇ -methylstyrene, isoprene and the like.
• the resins mentioned are used, for example, as tackifiers for pressure-sensitive adhesives and coating materials.
• the terpene-phenol resins which are talised addition of phenols to terpenes or rosin can be produced.
• Terpene-phenol resins are soluble in most organic solvents and oils and are miscible with other resins, waxes and rubber.
• the rosins and their derivatives for example their esters or alcohols.
• pH regulators all inorganic and organic acids and bases which do not adversely affect the stability of the polymer dispersion according to the invention are suitable as pH regulators.
• Sodium hydrogen carbonate for example, is suitable for setting basic pH values (pH value> 7); the setting of acidic pH values (pH value ⁇ 7) is carried out in the context of a preferred embodiment with p-toluenesulfonic acid.
• the polymer dispersion according to the invention optionally contains the pH regulator in an amount of up to about 5% by weight, for example about 0.05 to about 3% by weight or about 0.1 to about 2% by weight, based on the entire dispersion.
• Suitable plasticizers are, for example, esters such as abietic acid esters, adipic acid esters, azelaic acid esters, benzoic acid esters, butyric acid esters, acetic acid esters, esters of higher fatty acids with about 8 to about 44 carbon atoms, esters with OH groups or epoxidized fatty acids, fatty acid esters and fats, glycolic acid esters, phosphoric acid esters , Phthalic acid esters, linear or branched alcohols containing 1 to 12 carbon atoms, propionic acid esters, sebacic acid esters, sulfonic acid esters, thiobutyric acid esters, trimellitic acid esters, citric acid esters and esters based on nitrocellulose and polyvinyl acetate, and mixtures of two or more thereof.
• esters such as abietic acid esters, adipic acid esters, azelaic acid esters, benzoic acid esters, butyric acid est
• the asymmetric esters of difunctional, aliphatic dicarboxylic acids are particularly suitable, for example the esterification product of monoctyl adipate with 2-ethylhexanol (Edenol DOA, from Henkel, Dusseldorf).
• plasticizers are the pure or mixed ethers of monofunctional, linear or branched C 1-4 alcohols or mixtures of two or more different ethers of such alcohols, for example dioctyl ether (available as Cetiol OE, from Henkel, Düsseldorf).
• end-capped polyethylene glycols are used as plasticizers.
• plasticizers polyethylene or polypropylene glycol di-C 1-4 alkyl ether, in particular the dimethyl or diethyl ether of diethylene glycol or dipropylene glycol, and mixtures of two or more thereof.
• Diurethanes are also suitable as plasticizers in the context of the present invention.
• Diurethanes can be prepared, for example, by reacting diols with OH end groups with monofunctional isocyanates by selecting the stoichiometry so that essentially all free OH groups react. Any excess isocyanate can then be removed from the reaction mixture, for example by distillation.
• Another method for the preparation of diurethanes consists in the reaction of monofunctional alcohols with diisocyanates, all of the NCO groups reacting as far as possible.
• Diols with 2 to about 22 carbon atoms can be used to prepare the diurethanes based on diols, for example ethylene glycol, propylene glycol, 1,2-propanediol, dibutanediol, hexanediol, octanediol or technical mixtures of hydroxy fatty alcohols with about 14 carbon atoms , especially hydroxystearyl alcohol.
• Linear diol mixtures are preferred, in particular those which contain polypropylene glycol with an average molecular weight (M n ) of about 1,000 to about 6,000 in amounts above about 50% by weight, in particular above about 70% by weight.
• Diurethanes based exclusively on are very particularly preferred Propylene glycol with the same or different average molecular weights from about 1,000 to about 4,000.
• the free OH groups of the diol mixtures are essentially all reacted with aromatic or aliphatic monoisocyanates or their mixtures.
• Preferred monoisocyanates are phenyl isocyanate or tolylene isocyanate or mixtures thereof.
• Aromatic or aliphatic diisocyanates or mixtures thereof are used to produce the diurethanes based on diisocyanates.
• Suitable aromatic or aliphatic diisocyanates are, for example, the isocyanates as stated above as being suitable for producing the polyurethane according to the invention, preferably tolylene diisocyanate (TDI).
• TDI tolylene diisocyanate
• the free NCO groups of the diisocyanates are essentially completely reacted with monofunctional alcohols, preferably linear monofunctional alcohols or mixtures of two or more different monofunctional alcohols. Mixtures of linear monofunctional alcohols are particularly suitable.
• Suitable monoalcohols are, for example, monoalcohols having 1 to about 24 carbon atoms, for example methanol, ethanol, the positional isomers of propanol, butanol, pentanol, hexanol, hepanol, octanol, decanol or dodecanol, in particular the respective 1-hydroxy compounds, and Mixtures of two or more of them.
• monoalcohols having 1 to about 24 carbon atoms, for example methanol, ethanol, the positional isomers of propanol, butanol, pentanol, hexanol, hepanol, octanol, decanol or dodecanol, in particular the respective 1-hydroxy compounds, and Mixtures of two or more of them.
• so-called "technical mixtures" of alcohols and end-capped polyalkylene glycol ethers are also suitable.
• Alcohol mixtures are particularly suitable, the polypropylene glycol monoalkyl ethers with an average molecular weight (M n ) of about 200 to about 2,000 in an amount of more than about 50 wt .-%, preferably more than about 70 wt .-%, based on the alcohol mixture , contain.
• the preparation according to the invention generally contains the plasticizers mentioned in such an amount that the viscosity of the preparation during dispersion does not exceed approximately 200,000 mPas (Brookfield RVT, spindle 7, 2.5 rpm) at a temperature of approximately 1 ° C to about 140 ° C, especially at about 20 ° C to about 99 ° C, for example at about 23 ° C.
• plasticizers all building blocks used in the production of the silane-terminated polymers are suitable as plasticizers.
• the preparation according to the invention can also contain up to about 7% by weight, in particular up to about 5% by weight, of antioxidants.
• the preparation according to the invention can furthermore contain up to about 5% by weight of catalysts for controlling the curing rate.
• Suitable catalysts are, for example, metal-organic compounds such as iron or tin compounds, in particular the 1,3-dicarbonyl compounds of iron or of tetravalent or tetravalent tin, in particular the Sn (II) carboxylates or the dialkyl-Sn- ( IV) dicarboxylates or the corresponding dialkoxylates, for example dibutyltin dilaurate, dibutyltin diacetate, dioctyltin diacetate, dibutyltin maleate, tin (II) octoate, tin (II) phenolate or the acetyiacetonates of 2 or 4-valent tin.
• metal-organic compounds such as iron or tin compounds, in particular the 1,3-dicarbonyl compounds of iron or of tetravalent or tetra
• the preparation according to the invention can contain up to about 30% by weight, for example up to about 20% by weight, of fillers.
• suitable fillers are, for example, inorganic compounds which are inert to isocyanates and silanes, such as chalk, lime powder, precipitated silica, pyrogenic silica, zeolites, bentonites, ground minerals, glass beads, glass powder, glass fibers and glass fiber short cuts, as well as other inorganic fillers known to the person skilled in the art, and organic fillers, especially short fiber cuts or hollow plastic balls.
• fillers can be used which impart thixotropy to the preparation, for example swellable plastics such as PVC.
• the preparation according to the invention can contain up to about 2% by weight, preferably about 1% by weight, of UV stabilizers.
• UV stabilizers are particularly suitable as UV stabilizers.
• HALS hindered amine light stabilizers
• Lowilite 75, Lowilite 77 (Great Lakes, USA) are particularly suitable for this.
• the preparations according to the invention can be produced in a wide variety of ways. As a rule, it is sufficient to disperse the silyl group-bearing polymer, optionally together with a solvent, in the desired amount of water.
• the invention therefore also relates to a process for the preparation of a polymer dispersion according to one of Claims 1 to 6, characterized in that at least one organic polymer which comprises at least one group of the general formula I
• A is CH 2 or a linear or branched, saturated or unsaturated alkylene radical having 2 to about 12 C atoms or an arylene radical having about 6 to about 18 C atoms or an arylene alkylene radical having about 7 to about 19 C atoms
• Z for CH 3 , O-CH 3 or for a linear or branched, saturated or unsaturated alkyl radical or alkoxy radical having 2 to about 12 carbon atoms and n represents 0, 1 or 2, or a condensation product having at least two such groups, is dispersed in water during or after its preparation, if appropriate together with further organic polymers .
• the silyl group-bearing polymer is a polyurethane
• the polymer dispersions according to the invention are suitable for a wide range of applications in the field of surface coatings, adhesives and sealants.
• the preparations according to the invention are particularly suitable, for example, as contact adhesive, 1-component adhesive, 2-component adhesive, assembly adhesive, spray adhesive, glue stick, sealing compound, in particular joint sealing compound, and for surface sealing.
• the invention therefore also relates to the use of a polymer dispersion according to the invention as an adhesive, sealant, surface coating agent, filler or for the production of moldings.
• polyurethanes according to the invention or the preparations according to the invention are suitable, for example, as adhesives for plastics, metals, mirrors, glass, ceramics, mineral substrates, wood, leather, textiles, paper, cardboard and rubber, the materials being bonded to one another or to one another as desired can.
• the preparations according to the invention are formulated, for example, as spray adhesives.
• the preparation according to the invention is introduced into a corresponding spray cartridge together with a corresponding propellant.
• the preparations according to the invention are formulated as glue sticks.
• appropriate thickeners are added to the preparations according to the invention. Suitable thickeners are, for example, Carbopol 672 (BF Goodrich), Softisan Gel (Contensio), Aerosil (Degussa), Sipernat (Degussa), Rilanit HT extra (Henkel), Rilanit spec. micro.
• polyurethanes according to the invention or the preparations according to the invention are suitable, for example, as a sealant for plastics, metals, mirrors, glass, ceramics, mineral substrates, wood, leather, textiles, paper, cardboard and rubber, the materials in each case being sealed with one another or as desired can be.
• polyurethanes according to the invention or the preparations according to the invention are suitable, for example, as surface coating compositions for surfaces made of plastic, metal, glass, ceramic, mineral materials, wood, leather, textiles, paper, cardboard and rubber.
• the polyurethanes according to the invention or the preparations according to the invention are furthermore suitable for the production of moldings of any spatial shape.
• Another area of application for the polyurethanes according to the invention or the preparations according to the invention is the use as dowel, hole or crack filler.
• the invention further relates to an adhesive, a surface coating composition or a sealing compound, produced using a polymer dispersion according to the invention.
• Emulsifier Disponil AAP 43 (manufacturer: Henkel) 2%
• silyl-terminated polyurethane produced by 74%
• Emulsifier Disponil AAP 43 2%
• silyl-terminated polyurethane produced by 74%
• Emulsifier Disponil AAP 43 2%
• the respective polymer was mixed with the emulsifier, and then water was stirred in with a dissolver.
• the temperature was less than 100 ° C.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Dispersion Chemistry (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Sealing Material Composition (AREA)
• Polyurethanes Or Polyureas (AREA)
• Paints Or Removers (AREA)
• Silicon Polymers (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Processes Of Treating Macromolecular Substances (AREA)

Priority Applications (10)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7891874

Family Applications (1)

Country Status (20)

Cited By (7)

Families Citing this family (45)

Citations (5)

Family Cites Families (17)

• 1999
  • 1999-12-03 CN CN99814308A patent/CN1330667A/zh active Pending
  • 1999-12-03 ID IDW00200101505A patent/ID30437A/id unknown
  • 1999-12-03 US US09/857,933 patent/US6790903B1/en not_active Expired - Lifetime
  • 1999-12-03 AU AU18617/00A patent/AU768857B2/en not_active Ceased
  • 1999-12-03 EP EP99962205A patent/EP1151024B1/de not_active Expired - Lifetime
  • 1999-12-03 CA CA000000002A patent/CA2354532A1/en not_active Abandoned
  • 1999-12-03 HU HU0104835A patent/HU225361B1/hu not_active IP Right Cessation
  • 1999-12-03 RU RU2001119157/04A patent/RU2241728C2/ru not_active IP Right Cessation
  • 1999-12-03 WO PCT/EP1999/009442 patent/WO2000035981A1/de not_active Ceased
  • 1999-12-03 ES ES99962205T patent/ES2306529T3/es not_active Expired - Lifetime
  • 1999-12-03 JP JP2000588236A patent/JP2002532589A/ja active Pending
  • 1999-12-03 BR BR9916097-8A patent/BR9916097A/pt not_active Application Discontinuation
  • 1999-12-03 PL PL99348046A patent/PL348046A1/xx unknown
  • 1999-12-03 CZ CZ20012081A patent/CZ20012081A3/cs unknown
  • 1999-12-03 KR KR1020017007206A patent/KR100634073B1/ko not_active Expired - Fee Related
  • 1999-12-03 DE DE59914754T patent/DE59914754D1/de not_active Expired - Lifetime
  • 1999-12-03 AT AT99962205T patent/ATE394437T1/de active
  • 1999-12-03 TR TR2001/01608T patent/TR200101608T2/xx unknown
  • 1999-12-04 DE DE19958525A patent/DE19958525A1/de not_active Withdrawn
• 2001
  • 2001-05-23 NO NO20012529A patent/NO20012529L/no not_active Application Discontinuation
  • 2001-06-08 ZA ZA200104708A patent/ZA200104708B/xx unknown

Patent Citations (5)

Also Published As

Similar Documents

Legal Events