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Home › Process for the preparation of polyterephthaloyl-and polydiphenyl ether-4,4-dicarboxylic acid oxalamidrazone

Process for the preparation of polyterephthaloyl-and polydiphenyl ether-4,4-dicarboxylic acid oxalamidrazone

US Patent 4208509 · Granted Jun 17, 1980

Estimated economic value: $1,514,000 ⓘ

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