Bisimidodiphenol derivatives

Details Bisimidodiphenol derivatives Bisimidodiphenol derivatives

1990-10-31

1991-11-26

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548403, C07D40310

Patent

active

050683527

ABSTRACT:
Liquid crystalline polyesteretherimides are prepared by a transesterification reaction involving terephthalic acid and acylated derivatives of 4-hydroxybenzoic acid and of certain bisimidodiphenols, or from the free bisimidodiphenol and aryl esters of the acids. In addition to being liquid crystalline, the polyesterethermides are crystalline in the solid state and have relatively high glass transition temperatures.

REFERENCES:
patent: 4476309 (1984-10-01), Verbicky, Jr. et al.
patent: 4757150 (1988-07-01), Guggenheim et al.
patent: 4988821 (1991-01-01), Haitko et al.

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