Hercules Corporation

John F Newport

Nitya P Khasat

Andrea E Martin

A molded article comprising a cross-linked ring-opened polymer produced by the metathesis polymerization of a dicyclopentadiene (DCPD) monomer, which may be dicyclopentadiene (DCPD) or of a mixture of (DCPD) and norbornene group-containing cycloolefins, in the presence of an effective amount of a metathesis polymerization catalyst and a co catalyst that is capable of crosslinking the unsaturated double bonds of the polymer and thereby increasing the crosslink density of the polymer and its T.sub.g, a process for making it, a process for increasing the T.sub.g of the molded article, and uses of the molded article with a high T.sub.g.

Dicyclopentadiene polymers with heat-resistant dimensional integrity and

Disclosed is a method of moderating the catalyst activation characteristics of an alkyl aluminum compound by the use of hydrocarbon substituted acetylene. Preferred compounds are phenylacetylene, hexyne-1-and hexyne-2.

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Wilmington, DE, United States of America

John F Newport