PARTICULATE MICROCAPSULE COMPOSITION

The present invention relates to particulate microcapsule compositions comprising microcapsules and an emulsion polymer, obtainable via spray drying of an aqueous microcapsule dispersion, where the microcapsules comprise a capsule core and a polymer as capsule wall and the polymer is composed of from 30 to 90% by wt. of one or more monomers (monomers I) from the group consisting of C1-C24-alkyl esters of acrylic and/or methacrylic acid, acrylic acid, methacrylic acid, and maleic acid, from 10 to 70% by wt. of one or more ethylenically unsaturated monomers having two, three, four, or more ethylenically unsaturated moieties (monomers II), and from 0 to 40% by wt. of one or more other monomers (monomers III), based in each case on the total weight of the monomers, with use of an aqueous dispersion of one or more emulsion polymers which comprises in copolymerized form from 50 to 99.9% by wt. of esters of acrylic and/or methacrylic acid with alkanols having from 1 to 12 carbon atoms and/or styrene, or from 50 to 99.9% by wt. of styrene and/or butadiene, or from 50 to 99.9% by wt. of vinyl chloride and/or vinylidene chloride, or from 50 to 99.9% by wt. of vinyl acetate, vinyl propionate, vinyl esters of versatic acid, vinyl esters of long-chain fatty acids, and/or ethylene, as spraying aid, to a process for producing these, and also to their use for producing thermoplastic moldings.