Abstract: A metal foil or plastic film clad reinforced resin susbstrate which is made by the process of injection molding a polymerizing resin solution under pressure in a closed heated mold cavity having at least one surface covered by a metal foil or plastic film. These laminates are useful as electrical circuit board and EMI/RFI shielding components.

Abstract: Polyimide copolymers which are reaction products of active methylene compounds and N,N'-bismaleimide derivatives are improved by incorporating them with 2-20% by weight of a polyetherimide polymer having arylimide bonds, arylene bonds and ether bonds. The polymer blend is useful in films, moldings, prepregs, laminates and filled composites which are particularly useful in structural components which have stability at high temperatures.

Abstract: Polyimide polymers which are reaction products of active methylene compounds and N,N'-bismaleimide derivatives are improved by incorporating them with 2 to 15% by weight of a polyethersulfone polymer. The polymer blend is useful in producing films, moldings, prepegs, laminates and filled composites which are particularly useful in structural components which have stability at high temperatures.

Abstract: Polyamide polymers are made by reacting fluorinated xylylene diamine or the corresponding isocyanate derivatives with polycarboxylic moieties such as anhydrides or acid chlorides. The polymers thus formed may be cast into films having superior impermiability to gases and moisture.

Abstract: Carboxy terminated vinylester urethane polymers are useful as a thickening agent for sheet molding compositions when reacted with metal oxide which comprises a compound having the general formula:B--I[A--M--A--M].sub.n --CO.sub.2 HwhereinB is a radical derived from a hydroxyl-terminated ester of acrylic or methacrylic acid;I is a radical derived from an aromatic polyisocyanate;A is a radical derived from polyoxyalkylene bisphenol A or derivative thereof;M is a radical derived from a dicarboxylic acid or anhydride thereof;n is an integer equal to from 1 to about 10.The polymer is employed as a thickening agent in systems containing vinylmonomer and other ethylenically unsaturated resins.

Abstract: Vinyl ester urethane resins prepared by reacting (a) the reaction product of a polyoxyalkylene bisphenol A and a polycarboxylic acid or anhydride, (b) a polyfunctional isocyanate, and (c) a monohydroxyl-terminated ester of acrylic acid are useful in coating compositions.