C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
117/187, 402/22
C08G 77/388 (2006.01) B05D 7/20 (2006.01) C08G 73/10 (2006.01) C08G 77/455 (2006.01) C09D 183/04 (2006.01) H01B 13/32 (2006.01)
Patent
CA 2028646
Case 5991 RDF/dka 11-1-89 SOLVENT RESISTANT POLYIMIDESILOXANES Abstract Disclosed is a substantially fully imidized diglyme-insoluble, N-methylpyrrolidone-soluble polyimidesiloxane which is the reaction product of a dianhydride, about 1 to about 5% by weight of a mono-anhydride, and a mixture of about 20 to about 50% by weight siloxane diamine and about 50 to about 70% by weight non-siloxane diamine. The non-siloxane diamine is a mixture of about 33 to about 50 mole percent of a first diamine having the general formula Image or Image and about 50 to about 67 mole percent of a second diamine having the general formula or Image Image where each "X" is independently selected from hydrogen and halogen and each "Y" is independently selected from -CH2-, Image ,-O-, Image , Image , Image , -S- , and Image The polyimidesiloxanes are very useful in coating wire, cable, and circuit boards.
Lee Chung J.
Occidental Chemical Corporation
Swabey Ogilvy Renault
LandOfFree
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