Patent ID: 6624212
Filing Date: 2003-09-23
Classification: C08F,C08L,Y10S

Abstract:
An acrylic-based impact modifier composition for poly(vinyl chloride) comprising:a) at least 88 weight percent of a rubber compound having a glass transition temperature of less than 25Â° C., wherein at least 95 weight percent of the rubber compound is selected from the group consisting of: 1) C1 to C12 alkyl acrylate or a C1 to C12 alkyl methacrylate homopolymer, and 2) a copolymer of butyl acrylate and ethyl acrylate or 2-ethylhexyl acrylate; and b) a shell wherein the shell is disposed externally to the rubber compound, and wherein the shell is at least partially grafted to the rubber compound, wherein the impact modifier has a mean particle size of greater than 300 nanometers.