Patent ID: 7008312

Claim:
A method, comprising: mixing an aqueous polymer dispersion and an abrasive grit to form a grit mixture, then drying the grit mixture to form an abrasive material, wherein the aqueous polymer dispersion comprises dispersed particles of at least one polymer A1 having a glass transition temperature Tg of from −20° C. to +35° C. and obtained by free-radical emulsion polymerization in the presence of a polymer A2, wherein the polymer A2 comprises polymerized units of from 50 to 99.5% by weight of at least one of an ethylenically unsaturated monocarboxylic acid and an ethylenically unsaturated dicarboxylic acid whose carboxylic groups can form an anhydride group, or mixtures thereof, from 0.5 to 50% by weight of at least one ethylenically unsaturated compound selected from the group consisting of an ester of an ethylenically unsaturated monocarboxylic acid, a monoester of an ethylenically unsaturated dicarboxylic acid and a diester of an ethylenically unsaturated dicarboxylic acid with an amine containing at least one hydroxyl group, and up to 20% by weight of at least one further monomer.