Patent ID: 6262159
Filing Date: 2001-07-17
Classification: C08F,C09D,C09J

Abstract:
A polymer dispersion comprising in an aqueous mediuma) dispersed particles of a polymer composed of units of ethylenically unsaturated monomers of which more than from 5 to 20% by weight are .alpha.,.beta.-ethylenically unsaturated mono- or dicarboxylic acids;b) a dissolved polymer containing in copolymerized form from 60 to 100% by weight of at least one .alpha.,.beta.-ethylenically unsaturated mono- or dicarboxylic acid, or salts thereof; andc) an amine of the formula I ##STR6##in whichR is an alkyl or alkylene radical having at least 6 carbon atoms or an alkylphenyl radical having at least 6 carbon atoms in the alkyl group;R' independently at each occurrence is H or C.sub.1-4 alkyl;R"" is C.sub.1-4 alkylene;m, n and o independently of one another are a number .gtoreq.0, with the proviso that at least one value of m, n and o is other than 0,is 0 or 1,the weight ratio, based on solids, of the dispersed particles to dissolved polymer being in the range from 7:1 to 1:7 and the weight ratio of dissolved polymer to amine being in the range from 20:1 to 2:1;said polymer dispersion being obtainable by emulsion polymerization of said ethylenically unsaturated monomers in the presence of said dissolved polymer and of said amine of the formula I.