Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-03-21
1991-10-08
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, 528170, 528172, 528173, 528229, 528352, 528 88, 4284735, C08G 6926, C08G 802, C08G 1400
Patent
active
050555502
ABSTRACT:
This invention relates to new fluorine-containing polyimides, polyamide-acids/esters, polyamides, addition polyimides and imide oligomers which exhibit low melting points, better solubilities, low dielectric constants, superior thermal and thermal oxidative stability, and improved processing characteristics.
The products of this invention are characterized by the fact that they are derived from 4,4'-bis[2-(3,4-(dicarboxyphenyl)hexafluoroisopropyl]diphenyl ether dianhydride.
REFERENCES:
patent: 4925915 (1990-05-01), Mueller et al.
patent: 4925916 (1990-05-01), Harris et al.
patent: 4931540 (1990-06-01), Mueller et al.
Erckel Ruediger J.
Khanna Dinesh N.
Mueller Werner H.
Vora Rohitkumar H.
Hampton-Hightower P.
Hoechst Celanese Corp.
Hunter, Jr. James M.
Kight III John
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