Synonyms: | Poly(phthalidylidene-p-phenylenecarbonyloxy-4,4'-biphenylyleneoxycarbonyl-p-phenylene)(8CI); 4,4'-Dihydroxybiphenyl-3,3-bis(4-carboxyphenyl)phthalide copolymer, SRU;DF; DF (polyester); [1,1'-Biphenyl]-4,4'-diol-3,3-bis(4-carboxyphenyl)phthalidecopolymer, SRU |