POLYANHYDRIDES .4. POLY(ESTER-ANHYDRIDE)S DERIVED FROM TEREPHTHALIC ACID AND BISPHENOL-A

被引：7
|
作者：
KRICHELDORF, HR
JURGENS, C
机构：
[1] Institut für Technische und Makromolekulare Chemie, D-2000 Hamburg 13
来源：
EUROPEAN POLYMER JOURNAL | 1994年 / 30卷 / 03期
关键词：
D O I：
10.1016/0014-3057(94)90287-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(ester-anhydride)s based on terephthalic acid, isophthalic acid and bisphenol-A were prepared in two ways, either by polycondensation with acetic anhydride or via the ''silyl method''. The copoly(ester-anhydride)s prepared by means of acetic anhydride possess a higher degree of crystallinity and lower solubility probably due to a greater blockiness of their sequence. Soluble and meltable poly(ester-anhydride)s were obtained by cocondensation of terephthaloylchloride with silylated bisphenol-A and silylated 4-hydroxybenzoic acid or 6-hydroxynaphthoic acid. They were characterized by elemental analyses, viscosity measurements, i.r. spectra, C-13-NMR spectra, DSC measurements, WAXS powder patterns and optical microscopy. The copoly(ester-anhydride) with the highest molar fraction of 6-hydroxy-2-naphthoic acid forms a nematic melt above its melting point at 250-degrees.
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页码：281 / 287
页数：7
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