Patent ID: 6423775
Filing Date: 2002-07-23
Classification: C08F,C09D

Abstract:
A graft polymer based on derivatized starch or derivatized starch product as the graft substrate, wherein the starch or starch product is derivatized by one or more bifunctional monomers containing (i) a vinyl group, and (ii) a functional group that can be condensed with a free hydroxyl group present in the starch or starch product, and is grafted, at sites of derivatization, with one or more ethylene derivatives, said graft polymer containing about 30% to about 50% by weight of units derived from said starch or starch product, about 3% to about 7% by weight of units derived from said one or more bifunctional monomers, and about 43% to about 67% by weight of units derived from said one or more ethylene derivatives.