A New Synthetic Method of Liquid Crystalline Polyesters with Flexible Polymethylene Spacer

Abstract

Abstract: Polymethylene his(p-hydroxybenzoates) (Ⅰ) were prepared from solbrol anddifferent dids by melted stated transesterification reaction with Ti (OC₄H₉-n)/N (n-C₄H₉)₃ asthe catalyst and (C₆H₅O)₃Pas the heat-stable inhibitor.Six liquid crystalline polyesters weresynthesized from terephthalyl dichloride and (Ⅰ).Thermotropic liquid crystallineproperties of these polyesters were identified by DSCand polarizing microscope with a hot stage.

Key words: Liquid crystalline polyesters, Thermotropic liquid crystal, Flexible polymethylene spacer, Melted state transesterification, Nematic phase

CLC Number:

O631.2

TrendMD:

ZHANG Hai-Liang, TAN Song-Ting, ZHU Zhi-Qiang, WANG Xia-Yu. A New Synthetic Method of Liquid Crystalline Polyesters with Flexible Polymethylene Spacer[J]. Chem. J. Chinese Universities, 1997, 18(11): 1893.

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A New Synthetic Method of Liquid Crystalline Polyesters with Flexible Polymethylene Spacer

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