Process for the manufacture of plastics dispersions

Abstract

Abstract An aqueous polymer dispersion which is suitable for the preparation of paints having high wet adhesion is prepared by copolymerisation in aqueous medium of vinyl esters of saturated monocarboxylic acids in the presence of an olefinically unsaturated acetoacetate. The vinyl ester employed is vinyl acetate, vinyl propionate, vinyl butyrate and/or vinyl isobutyrate together with vinyl esters of saturated monocarboxylic acids having 5 to 20 carbon atoms whose carboxyl group is bonded to a tertiary or quaternary carbon atom. The resultant dispersions are suitable for the preparation of gloss emulsion paints having high wet adhesion to non-sorptive substrates and have high resistance to hydrolysis.

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