Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1992-12-04
1994-03-29
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, 528179, 528185, 528188, 528220, 528229, 528350, C08G 6926, C08G 7310
Patent
active
052986012
ABSTRACT:
A high temperature fluorinated polyimide is made by forming a solution that includes a 3F-monomer and an aromatic or aliphatic diamine such that the solution has a ratio of 3F-monomer to diamine of greater than 1.05. The 3F-monomer is 4,4'-(2,2,2-trifluoro-1-phenylethylidene) diphthalic anhydride, a dialkylester of 4,4'-(2,2,2-trifluoro-1-phenylethylidene) diphthalic anhydride, 4,4'-(2,2,2-trifluoro-1-phenylethylidene) diphthalic acid, or mixtures thereof. The solution is mixed so the 3F-monomer reacts with the diamine to form a 3F-polyimide.
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Hampton-Hightower P.
Kight III John
Romanik George J.
United Technologies Corporation
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