Patent ID: 6939916
Filing Date: 2005-09-06
Classification: C08L,C09D,Y10T

Abstract:
1. An adhesion promoter composition formed by a process comprising (a) forming an olefin-based block copolymer by reacting a hydroxyl-functional, substantially saturated olefin polymer with a chain-extension reagent selected from the group consisting of lactones, hydroxy carboxylic acids, alkylene oxides, and combinations thereof, said chain-extension reagent forming the modifying block of the block copolymer; and (b) providing the olefin based block copolymer mixture at a temperature between 85° and 50° C. and adding to the block copolymer, a chlorinated polyolefin, with agitation, wherein the adhesion promoter demonstrates improved stability over an adhesion promoter of an identical formulation formed at temperatures between room temperature and 40° C.