Hoechst Celanese Corporation

Harry S Pulaski

Michael J Sansone

Paul N Chen, Sr

Frank J Onorato

M Ishaq Haider

Vincent J Sullivan

A moldable thermoset composition comprising about 5-60% liquid crystal polymer and about 95-40% of an epoxy-functional rubber by weight, a process for making and a process for using same. The composition is made by melt mixing the LCP and the epoxy-rubber to form a blend. This blend is then cooled and may be molded, extruded, or otherwise formed into a desired shape. The composition is then heat-treated to make it set.

Thermoset LCP blends

A process for sulfonating preformed hydroxyethylated polybenzimidazole fibers is disclosed. The process comprises the steps of forming an hydroxyethylated polybenzimidazole spinning solution; spinning hydroxyethylated polybenzimidazole fibers, sulfonating the fibers by contacting them with a sulfonating agent, and heating the fiber in an inert atmosphere at a temperature and for a period of time sufficient to convert the ionic bonds, formed in the sulfonating step to covalent bonds, thereby, providing a covalently bonded, sulfonated, hydroxyethylated polybenzimidazole fiber. The fibers produced by the process of the present invention exhibit cation selectivity for electrodialysis and electrochemical applications.

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Wilkes Barre, PA, United States of America

Harry S Pulaski