Polyphenylene resins from vinylethynylbenzene, diethynylbenzene and phenylacetylene

摘要

A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-- carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.