Abstract: Poly(arylene sulfide) compositions heat curable to products exhibiting improved high temperature properties are provided comprising a minor amount of alkyl-substituted cyclic repeating units and a major amount of cyclic repeating units free of alkyl substituents. The copolymers can be blended with arylene sulfide homopolymers to provide compositions exhibiting improved curing characteristics, as well as being combined with various fillers to provide coating compositions and laminates formed therefrom.

Abstract: A new polyamide composed at least primarily of terephthalic acid and 5-methyl-1,9-nonanediamine, the polyamide having less than 5 olefinic double bonds per 100 diamine units, an inherent viscosity of at least about 0.6, a polymer melt temperature of at least about 200.degree.C, a T.sub.g in the range of about 100.degree.C to about 120.degree.C, and a T.sub.m in the range of about 247.degree.C to about 265.degree.C can be formed into fibers without the use of plasticizers. Such fibers can be produced with a boiling water shrinkage of less than 30 percent and a zero strength temperature of at least 200.degree.C.

Abstract: Resinous graft copolymers useful in adhesive formulations are prepared by polymerization of an alkoxystyrene with an olefinically unsaturated nitrile in a solution or dispersion of a rubber. The polymeric compositions can be applied to surfaces as a hot melt adhesive or solvent cement. Laminates formed with the resinous graft copolymers exhibit substantial lap shear strength.