摘要:
Electronic parts and a process for manufacturing the electronic parts are provided. The electronic parts comprise an electric insulating material exhibiting a high heat resistance and low dielectric constant as a structural component. The electric insulating material is formed of a polyimide containing a recurring unit represented by the following general formula (1).
摘要:
The invention provides a proton conductive resin composition from which proton conductive membranes exhibiting high proton conductivity can be obtained without treatment to increase the acid concentration in the membrane. The invention also provides a method for preparing the composition, and a proton conductive membrane comprising the composition. The proton conductive resin composition comprises a silica and a proton conductive sulfonated polyarylene. The method for preparing proton conductive resin compositions comprises mixing aggregates of silica powder having an average aggregate diameter of not more than 50 nm with a sulfonated polyarylene.
摘要:
A polyarylene copolymer which comprises (A) from 60 to 3 mol% aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) from 40 to 97 mol% aromatic compound units having a main chain containing no electron-withdrawing groups therein (provided that (A)+(B) = 100 mol%), and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.
摘要:
A composition for film formation which is useful as an interlayer insulating film material in the production of semiconductor devices and the like, and gives a coating film having excellent uniformity, low dielectric constant, low leakage current and excellent storage stability; and a material for insulating film formation using the composition. The composition comprises
(A) a product of hydrolysis and condensation obtained by hydrolyzing and condensing at least one compound selected from the group consisting of
(A-1) compounds represented by the formula (1): R 1 a Si(OR 2 ) 4-a , and (A-2) compounds represented by the formula (2): R 3 b (R 4 O) 3-b Si-(R 7 ) d -Si(OR 5 ) 3-c R 6 c ; and
(B) a compound represented by the formula (3): R 8 O(CHCH 3 CH 2 O) e R 9 .
摘要:
A polyarylene copolymer which comprises (A) from 60 to 3 mol% aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) from 40 to 97 mol% aromatic compound units having a main chain containing no electron-withdrawing groups therein (provided that (A)+(B) = 100 mol%), and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.
摘要:
Electronic parts and a process for manufacturing the electronic parts are provided. The electronic parts comprise an electric insulating material exhibiting a high heat resistance and low dielectric constant as a structural component. The electric insulating material is formed of a polyimide containing a recurring unit represented by the following general formula (1).