Patent ID: 6479147
Filing Date: 2002-11-12
Classification: C08F,Y10T

Abstract:
A multiple phase polymeric system adapted for forming particles having at least two distinct and separate phases, said system comprising:a first phase including at least one of polyvinyl chloride and vinyl chloride copolymer; and a second phase that generally encapsulates said first phase, said second phase formed from polymerizing (i) at least one acrylate monomer selected from the group consisting of acrylate monomer, acrylate polymer, and acrylate copolymer, and (ii) an effective amount of an acrylonitrile monomer in the range of from about 1% by weight to about 40% by weight (based upon the total weight of said at least one acrylic monomer and said acrylonitrile monomer) to induce and maintain phase separation between said first phase and said second phase.