Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-06-24
1990-06-05
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528129, 528173, 528185, 528188, 528353, C08G 802, C08G 1400, C08G 804, C08G 6926
Patent
active
049315315
ABSTRACT:
This invention relates to a novel polyimide which is high-temperature resistant and capable of being molded in a fused state. This invention also relates to a high-temperature adhesive using the polyimide.
The polyimide consists essentially of recurring units of the formula: ##STR1## where R is a tetra-valent radical selected from the group consisting of an aliphatic radical having 2 or more carbon atoms, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, and non-condensed polyaromatic radical wherein aromatic radicals are linked to one another directly or via a bridge member.
The polyimide can be prepared by reacting bis[4-(4-aminophenoxy)phenoxy)phenyl] sulfone with a tetracarboxylic dianhydride in an organic solvent and imidizing the resultant polyamic acid.
Various tetracarboxylic dianhydrides can be used and preferred dianhydride are pyromellitic dianhydride, 3,3',4,4'-benzophenonetetracarboxylic dianhydride, bis(3,4-diarboxyphenyl) ether dianhydride, 3,3',4,4'-biphenyltetracarboxylic dianhydride, and 4,4'-(p-phenylenedioxy)diphthalic dianhydride.
REFERENCES:
Chemical Abstracts, vol. 108, 1988: 141730y, Moldings for Printed Circuit Boards, Hiroaki et al.
Iiyama Katsuaki
Kawashima Saburo
Ohta Masahiro
Oikawa Hideaki
Tamai Shoji
Kight III John
Mason T.
Mitsui Toatsu Chemicals Incorporated
LandOfFree
Polyimide and high-temperature adhesive thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyimide and high-temperature adhesive thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyimide and high-temperature adhesive thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-492224