Back to results
US 4,316,002 AGranted
Molding compositions comprised of polyimide/N-vinylpyrrolidone prepolymer and epoxy resin
AssigneeRhone-Poulenc Industries
InventorsRobert Cassat, Gerard Guillot
Life of this patent
Estimating the term…
Abstract
Novel thermosetting compositions, including a polyimide/N-vinylpyrrolidone prepolymer, optionally comprising an unsaturated polyester, and an epoxy resin, are well adapted for the molding of a variety of useful shaped articles.
Claims12
A composition of matter comprising (i) a prepolymer consisting essentially of a reaction product obtained by reacting (a) a polyimide having the structural formula:
- ##STR6## wherein D is selected from the group consisting of ##STR7## wherein Y is selected from the group consisting of H, CH.sub.3, and Cl, m is 0, 1 or 2, R is an organic radical of valency n, containing from 2 to 50 carbon atoms, and n is a number having an average value between 2 and 5, and (b) N-vinyl-2-pyrrolidone;
- and (ii) an epoxy resin having at least one 1,2 epoxy group.
Dependencies are inferred from the claim text.