Coating compositions containing functionalized silicones

Claim 2

A coating composition comprising: (A) 3 to 30 parts, with solids content at about 50% by weight, of a latex composed of particles of organic (co)polymers exhibiting a glass transition temperature of between −20° C. and 50° C., (B) 0.05 to 5 parts, with solids content at about 65% by weight, of an epoxyfunctionalized polyorganosiloxane emulsion, and (C) and 100 parts, with solids content at about 75% by weight, of inorganic fillers.

Claim 3

The composition as claimed in claim 1 , wherein the latex is prepared from monomers (1) which are styrene, butadiene, acrylic esters or vinyl nitrites.

Claim 4

The composition as claimed in claim 2 , wherein the latex preparation comprises further ethylenically unsaturated monomers (2) which can be polymerized with said monomers (1), the amount of which is up to 40% by weight of the total of the monomers, said monomers (2) being: (a) carboxylic acid vinyl esters, (b) unsaturated ethylenic mono- and dicarboxylic acids, monoalkyl esters of unsaturated ethylenic dicarboxylic acids with alkanols having 1 to 4 carbon atoms, (c) amides of unsaturated carboxylic acids, (d) ethylenic monomers comprising a sulfonic acid group, its alkali metal, its ammonium salts, (e) ethylenically unsaturated monomers comprising a secondary, tertiary or quaternary amino group or a heterocyclic group comprising nitrogen, aminoalkyl(meth)acrylamides, or zwitterionic monomers, (f) esters of (meth)acrylic acids with alkanediols comprising 2-8 carbon atoms, or monomers comprising two polymerizable double bonds.

Claim 5

The composition as claimed in claim 3 , wherein said monomers (2) is: (a) vinyl acetate, vinyl versatate, vinyl propionate, (b) acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, (c) acrylamide, methacrylamide, N-methalolacrylamide, N-methalolmetha-acrylamide, (d) vinylsulfonic acid, vinylbenzenesulfonic acid, acrylamidomethylpropanesulfonic acid, 2-sulfoethylene methacrylate, (e) dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, di-tert-butylaminoethyl acrylate, di-tert-butylaminoethyl methacrylate, dimethylaminomethylacrylamide, dimethylaminomethylmethacrylamide, sulfopropyl(dimethyl)aminopropyl acrylate. (f) glycol mono(meth)acrylate, hydroxypropyl mono(meth)acrylate, 1,4-butanediol mono(meth)acrylate, or ethylene glycol dimethacrylate.

Claim 6

The composition as claimed in claim 3 , wherein the latex comprises, by weight: 25-90% of styrene and/or acrylonitrile, 75-10% of butadiene and/or acrylates, 0-20% of unsaturated carboxylic acid, and 0-40% of other unsaturated ethylenic monomers.

Claim 7

The composition as claimed in claim 5 , wherein the latex comprises, by weight: 45-75% of styrene and/or acrylonitrile, 55-25% of butadiene and/or acrylates, 1-10% of unsaturated carboxylic acid, and 0-15% of other unsaturated ethylenic monomers.

Claim 8

The composition as claimed in claim 1 , wherein the epoxy-functionalized polyorganosiloxane is composed of units of formula (I) and is terminated by units of formula (II) or is composed of units of formula (I) which are represented below: wherein: the R 1 symbols are alike or different and represent: a linear or branched alkyl radical comprising from 1 to 8 carbon atoms, a cycloalkyl radical comprising between 5 and 8 cyclic carbon atoms which is optionally substituted, an aryl radical comprising between 6 and 12 carbon atoms which is optionally substituted, an aralkyl part having an alkyl part comprising between 5 and 14 carbon atoms and an aryl part comprising between 6 and 12 carbon atoms which is optionally substituted on the aryl part by halogens, alkyls or alkoxyls comprising 1 to 3 carbon atoms, the Y′ symbols are alike or different and represent: the R 1 group, or an epoxyfunctional group, connected to the silicon of the polyorganosiloxane via a divalent radical comprising from 2 to 20 carbon atoms optionally comprising at least one oxygen atom, and at least one of the Y′ symbols representing an epoxyfunctional group.

Claim 9

The composition as claimed in claim 7 , wherein the epoxyfunctional groups are:

Claim 10

The composition as claimed in claim 1 , wherein the coating is a paint.

Claim 11

A paint binder comprising: (A) 3 to 30 parts, with solids content at about 50% by weight, of a latex composed of particles of organic (co)polymers exhibiting a glass transition temperature of between −20° C. and 50° C., and (B) 0.05 to 5 parts, with solids content at about 65% by weight, of an epoxyfunctionalized polyorganosiloxane emulsion.

Claim 12

A paint binder comprising: (A) 3 to 30 parts, with solids content at about 50% by weight, of a latex composed of particles of organic (co)polymers exhibiting a glass transition temperature of between −20° C. and 50° C., and (B) 0.05 to 5 parts, with solids content at about 65% by weight, of an epoxyfunctionalized polyorganosiloxane emulsion.