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- W1538957021 abstract "Various copolyesters were synthesized from 4,4′-dihydroxybiphenyl and combinations of two or three differently substituted terephthalic acids. Various synthetic methods were studied; polycondensations of terephthaloyl dichlorides in dry pyridine gave the highest molecular weights. All copolyesters are semicrystalline and form a nematic melt above their melting points. Several copolyesters are well soluble in aprotic organic solvents, such as dichloromethane, N,N-dimethyl-formamide (DMF), methyl benzoate or chlorobenzene. A blend of such a soluble polyester (5 wt.-%) with bisphenol-A polycarbonate (poly(oxycarbonyl-oxy-1,4-phenyleneisopropylidene-1,4-phenylene)) was prepared from a cosolvent and various mechanical data were measured. These data were compared with those of an aromatic thermotropic polycarbonate." @default.
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- W1538957021 date "1991-03-01" @default.
- W1538957021 modified "2023-09-26" @default.
- W1538957021 doi "https://doi.org/10.1002/macp.1991.021920315" @default.
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