Aromatic polyethers, polysulfones, and polyketones as laminating resins. V. Polymers containing acetylenic side groups

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Abstract
1,3‐Bis(p‐phenoxybenzenesulfonyl)benzene and 4,4′‐diphenoxydiphenyl sulfone were polymerized with isophthaloyl and terephthaloyl chloride in Friedel‐Crafts type polymerizations. These polymers had 2,4‐diphenoxyacetophenone in the backbone. The acetyl group was then converted into an acetylene group. They were crosslinked effectively by cyclization of the acetylene groups with a catalyst or by cyclo‐addition with bisnitrile oxides.

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