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- W2009667481 abstract "Two chiral terephthalic acids were synthesized from (S)-2-methylbutane-1-thiol and bromoterephthalic acid or 2,5-dibromoterephthalic acid. A series of chiral polyesters was then prepared by polycondensation of silylated 4,4′-dihydroxybiphenyl and mixtures of 2,5-bis(dodecylthio)terephthaloyl chloride and 2,5-bis((S)-2-methylbutylthio)terephthaloyl chloride. The copolyesters were characterized by elemental analyses, viscosity, DSC and X-ray measurements, and optical microscopy. Depending on the reaction conditions low and high molecular weights were obtained. In addition to a solid sanidic phase these polyesters form a chiral sanidic LC-phase and a chiral nematic LC-phase. However, in contrast to a normal cholesteric melt, these polyesters did not form a Grandjean texture but display the unusual “sausage texture”." @default.
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- W2009667481 date "1999-04-01" @default.
- W2009667481 modified "2023-09-23" @default.
- W2009667481 title "Layer structures, 13. Chiral sanidic polyesters derived from 2,5-bis(alkylthio)terephthalic acids" @default.
- W2009667481 doi "https://doi.org/10.1002/(sici)1521-3935(19990401)200:4<799::aid-macp799>3.0.co;2-s" @default.
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