Inventors:
William G. Carpenter - Cranbury NJ
Daniel F. Herman - Princeton NJ
Rudolph J. Berndlmaier - Allentown NJ
Assignee:
N L Industries, Inc. - New York NY
International Classification:
C08F 206
C08F21808
Abstract:
Novel crosslinked heteropolymers of vinyl acetate and maleic anhydride are provided which are useful as aqueous thickeners for aqueous formulations such as cosmetics and latex paints. Ester and amide derivatives of the combined maleic anhydride portion of the heteropolymer are also provided. The process for preparing the crosslinked heteropolymers comprises adding a maleic anhydride monomer, and crosslinking agent monomer, and catalyst in controlled amounts to a monomer solution of vinyl acetate.