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Home › Fiber of wholly aromatic copolyamide from 2,6-naphthalene dicarboxylic acid and 3,4'-diaminodiphenylether

Fiber of wholly aromatic copolyamide from 2,6-naphthalene dicarboxylic acid and 3,4'-diaminodiphenylether

US Patent 5177175 · Granted Jan 5, 1993

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