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Synthesis, thermal properties and solubility behaviour of para‐linked aromatic homopolyesters containing non‐coplanar 1,1′‐binaphthyl‐4,4′‐ylene units are described. By combining such binaphthylylene units with monosubstituted phenylene units, crystallization can be suppressed and thermotropic liquid‐crystalline polyesters with glass transition temperatures (Tg) up to 190°C are obtainable. The liquid‐crystalline order is maintained below Tg in an anisotropic glass. The polyesters show good solubility in common organic solvents, such as chloroform or tetrahydrofuran.
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Hohlweg et al. (1989) studied this question.
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