Patent ID: 7078455
Filing Date: 2006-07-18
Classification: C08J,C08L,C09D,Y10S

Abstract:
1. An aqueous plastic material dispersion based on a vinyl ester copolymer P obtained by multistage emulsion polymerization with a solid content of up to 80% by weight and a minimum film formation temperature below 20° C., which is substantially stabilized by ionic components, the vinyl ester copolymer P comprising at least one homo- or copolymer A and at least one homo- or copolymer B, and the homo- or copolymer A having a glass transition temperature of 0 to 20° C. and the homo- or copolymer B having a glass transition temperature of 20 to 50° C., provided that the glass transition temperatures of the two homo- or copolymers A and B differ by at least 10 K, the sum of the amounts of the homo- or copolymers A and B in the vinyl ester copolymer P being at least 50% by weight, based on the copolymer P, the weight ratio of homo- or copolymer A to homo- or copolymer B being 95/5 to 5/95 and the homo- or copolymers A and B, independently of one another, containing in the form of copolymerized units