Patent ID: 6569970
Filing Date: 2003-05-27
Classification: C04B,C08F,C09D

Abstract:
An aqueous polymer dispersion whose resultant film has a static glass transition temperature of from >+20 to +50Â° C. and whose dispersed polymer P comprisesfrom 90 to 99.5% by weight of at least one monomer from the group encompassing esters of acrylic acid with alkanols having from 1 to 8 carbon atoms, esters of methacrylic acid with alkanols having from 1 to 8 carbon atoms, styrene, &agr;-methylstyrene, o-chlorostyrene and vinyltoluenes, from 0.5 to 5% by weight of one or more monomers from the group encompassing acrylic acid, methacrylic acid, itaconic acid, the alkali metal salts of these, the ammonium salts of these, acrylamide and methacrylamide and from 0 to 5% by weight of at least one monomer of the general formula I where the variables have the following meanings:n is 0 to 2, R1, R2, R3 are, independently of one another, hydrogen or methyl, X is oxygen or imino (NH) and Y is hydrogen, alkali metal or ammonium, polymerized into it in free-radically polymerized form.