Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1999-04-27
2000-05-09
Richter, Johann
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528171, 528172, 528173, 528174, 528188, 528220, 528229, 528350, 528351, 548461, 549 59, 549 60, 549241, 549243, 549437, 549466, 549472, 549477, C08G 1409, C07D20948, C07D30780
Patent
active
060605758
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.
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patent: 5414070 (1995-05-01), Yang et al.
patent: 5675020 (1997-10-01), Eastomond et al.
Eastmond et al., "Poly(ether imide)s with hindering substituents in the anhydride moiety: synthesis, properties and gas permeabilities," Polymer, vol. 35, No. 19, pp. 4215-4227, 1994.
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).
Hsiao Sheng-Huei
Yang Chin-Ping
National Science Council
Oswecki Jane C.
Richter Johann
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