Abstract: Films of poly(arylene sulfide) polymers are produced by applying a layer of an arylene sulfide polymer resin on a metal substrate, with a metal oxide release agent interposed between the substrate and the resin layer, curing the polymer thereon, cooling the polymer layer and removing the resulting film from the substrate.

Abstract: A flexible product having a stiffness of less than 10,000 psi as measured by ASTM D747-70 is made from a mixture of poly(phenylene sulfide) and a filler selected from a group of fillers with at least one of the fillers being polytetrafluoroethylene. The mixture is subjected to pressure to flow same through an orifice and upon exiting from the orifice the mixture is allowed to expand to form the product which is useful as a packing or gasket material.

Abstract: A structural member is provided which is heat resistant and is formed from a mixture of poly(phenylene sulfide) resin and a filler with the structural member being comprised of an inner core formed from the poly(phenylene sulfide) and filler with the inner core having a cellular structure. The inner core is coated with poly(phenylene sulfide) which is fused and cured to provide additional strength for the member and to seal the porous inner core. Preferably, the structural member is of a honeycomb type having a plurality of voids to further lighten the member. Laminate members can be bonded or otherwise secured to the member to form a laminate type structure. The inner core portion of the structural member is made by molding the mixture and curing same to a predetermined degree of cure, after which the core portion is coated with a coating of poly(phenylene sulfide) which is then fused and cured.

Abstract: A process for free sintering parts made from mixtures of poly(phenylene sulfide) and at least one selected filler by subjecting molded parts to gradually increasing temperatures and then curing at an elevated temperature. Precured poly(phenylene sulfide) is first mixed with the selected filler and then compression molded to form a part of a desired shape. The part is then free sintered by being subjected to a gradually increasing temperature in an oven and cured. After curing, the part is cooled and is ready for use.