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Studies on the synthesis and properties of soluble homo- and copolyester–imide derived from imide–diacid

✍ Scribed by Chien-Hui Li; Chih-Chiang Chen; Ker-Ming Chen; Teh-Chen Chang

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
378 KB
Volume
55
Category
Article
ISSN
0021-8995

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✦ Synopsis

SYNOPSIS

A series of polyester-imides was prepared from diacid (imide-diacid [Ml-M4] or a mixture of imide-diacid and terephthalic acid [TPA]) and bisphenol A in the presence of diphenyl chlorophosphate (DPCP) and pyridine as a direct condensation agent. The inherent viscosities of homo-and copolyester-imides were in the range of 0.39-0.58 dL/g. Almost all these homo-and copolyester-imides were completely soluble in N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide (DMAC), dimethylformamide (DMF), and rn-cresol. The thermal properties of homo-and copolyester-imides were examined by DSC and TGA. These copolyester-imides had glass transition temperatures in the range of 95-240°C and a 5% weight loss was observed in the range of 354-465°C.

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