Patent ID: 7256236
Filing Date: 2007-08-14
Classification: C08F,C08L

Abstract:
1. A composition comprising: (a) a graft copolymer product comprising (i) backbone comprising polypropylene or derived from polypropylene, and (ii) bound maleic anhydride moieties; said graft copolymer having an average molecular weight of not greater than about 20,000 and a viscosity of from about 200 to about 1000 cps at about 190° C.; and (b) unbound maleic anhydride moieties, wherein said unbound maleic anhydride moieties are present in a concentration less than about 50% by weight of the total bound and unbound maleic anhydride present in the compatibilizing agent; wherein said graft copolymer is a product of a grafting reaction; and wherein said unbound maleic anhydride comprises unreacted maleic anhydride and oligomers containing maleic anhydride moieties.