Patent Number: 6,252,026

Title: High molecular weight, homogeneous, branched copolymers of maleic anhydride and alkyl vinyl ether monomers

Abstract: What is described is a high molecular weight homogeneous, branched copolymer of maleic anhydride and a C.sub.1 -C.sub.5 alkyl vinyl ether monomer, in which a branching agent is present in an amount of less than 0.5 wt. % of the polymer. A solution process of making such polymer also is described.

Inventors: Ulmer; Herbert W. (Hoboken, NJ)

Assignee: ISP Investments Inc.

International Classification: A61K 6/00 (20060101); C08F 216/18 (20060101); C08F 222/06 (20060101); C08F 222/00 (20060101); C08F 216/00 (20060101); C08F 116/12 ()

Expiration Date: 06/26/2018