Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-11-05
1994-02-22
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528126, 528128, 528171, 528172, 528173, 528179, 528185, 528188, 528220, 528229, 528350, 528351, C08G 6926, C08G 7310, C08G 802
Patent
active
052888436
ABSTRACT:
In one aspect, the present invention relates to polyimides having excellent thermal resistance and process for preparing the same comprising carrying out condensation of 4,4'-bis(3-aminophenoxy)biphenyl with pyromellitic dianhydride in the presence of a different diamine compound and optionally with a different tetracarboxylic acid dianhydride.
In a second aspect, the present invention relates to a heat resistant resin composition consisting essentially of an aromatic polyetherimide and a defined polyimide.
In a third aspect, the present invention relates to a polyimide resin composition comprised on a defined polyimide and a separate high-temperature engineering polymer.
In a fourth aspect, the present invention relates to a resin composition comprised of a defined polyimide and an aromatic polyamideimide.
REFERENCES:
patent: 4196144 (1980-04-01), Darms
patent: 4384061 (1983-05-01), Reiter et al.
patent: 4725642 (1988-02-01), Gannett et al.
patent: 4742153 (1988-05-01), Sutton, Jr.
patent: 4847349 (1989-07-01), Ohta et al.
SAMPE Journel Jul./Aug. 1988, "Adhesive Propertites of LARC-CPl, a New Semi-Journal of Polymer Science, Polymer Chemistry Edition", vol. 15, (1977), Crystalline.
Iiyama Katsuaki
Kawashima Saburo
Ohkoshi Kouji
Ohta Masahiro
Oikawa Hideaki
Hampton-Hightower P.
Kight III John
Mitsui Toatsu Chemicals Inc.
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