Polybenzazole compositions containing pendant poly(aromatic sulfide) moieties
AssigneeThe Dow Chemical Company
InventorsYing H. So, Thomas A. DeVilbiss, III
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Abstract
Graft copolymers of polybenzazole and poly(phenylene sulfide) are synthesized by the reaction of terephthalic acid and 4,6-diaminoresorcinol with 2-(polyphenylene sulfide)terephthalic acid. The resulting graft copolymer can be cross-linked by heating to provide a cross-linked product having improved thermal stability, acid resistance, and compressive strength.
Claims11
A process for synthesizing a cross-linked composition containing polybenzazole polymer, said process comprising heating a graft copolymer containing polybenzazole blocks and poly(aromatic sulfide) blocks grafted to said polybenzazole blocks to a temperature sufficient to induce cross-linking between the graft copolymer molecules.
Dependencies are inferred from the claim text.