Patent ID: 9144925
Filing Date: 2015-09-29
Classification: B29C,B29K

Abstract:
1. A process for making shape memory polyphenylene sulfide, comprising: compounding polyphenylene sulfide with a crosslinking agent; disposing the compounded polyphenylene sulfide in a mold; heating the mold to a temperature of about 320° C. to about 420° C. for initiating curing of the disposed polyphenylene sulfide in the presence of the crosslinking agent; compressing, by applying a compressive force to the heated polyphenylene sulfide to produce cured polyphenylene sulfide; cooling the cured polyphenylene sulfide; relieving the compressive force; and de-molding the cooled, cured polyphenylene sulfide to produce the shape memory polyphenylene sulfide; wherein the crosslinking gent comprises a sulfur donor, sulfur, silica, peroxy compound, metal oxide, metal peroxide, or a combination comprising at least one of the foregoing crosslinking agents.