Colorless organic-soluble aromatic poly(ether-imide)s, the organ

Details Colorless organic-soluble aromatic poly(ether-imide)s, the organ Colorless organic-soluble aromatic poly(ether-imide)s, the organ

1998-08-18

1999-11-02

Ramsuer, Robert W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528171, 528172, 528173, 528188, 528220, 528229, 528350, 528174, 528351, 427371, 4273722, 548461, 548462, 549436, 549437, C08G 1409, C08G 6926, C08G 7310, B05D 312

Patent

active

059772891

ABSTRACT:
The present invention provides a series of easily processable poly(ether-imide)s that are organic-soluble and can afford colorless films, their organic solutions and their manufacturing process. The poly(ether-imide) is prepared from a dianhydride and a diamine, wherein the dianhydride is a bis(ether anhydride) having tert-butyl group, i.e. 1,4-bis(3,4-dicarboxyphenoxy)-2-tert-butylbenzene dianhydride. The present invention is also directed to synthesis of this special dianhydride.

REFERENCES:
patent: 5268487 (1993-12-01), Yang et al.
patent: 5414070 (1995-05-01), Yang et al.
Liaw et al., Synthesis and Properties of Polyimides Derived from 1,4-Bis(4-aminophenoxy)-2-tert-butylbenzene, Polymer Journal, vol. 28, No. 11, pp. 970-975 (1996).

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