Sughrue, Mion, Zinn, Macpeak & Seas
Film forming solution, porous film obtained therefrom and coated material with the porous film
 A film forming solution which does not require aprotic polar solvents, a porous film of poly(4,4'-oxydiphenylenepyromellitimide) obtained from the film forming solution which has excellent heat and chemical resistances, which is controllable in terms of porosity and pore size of the film and which has excellent electrical characteristics, and a coated material where the porous film is formed on a base material. Particularly, a film forming solution of a precursor of poly(4,4'-oxydiphenylenepyromellitimide) and a mixture of at least three solvents which are poor solvents for the precursor when each solvent is used alone, a porous film of poly(4,4'-oxydiphenylenepyromellitimide) obtained from the film forming solution and a coated material where the porous film is formed on a base material. 
Unitika, Ltd.
Y H Y C C C
Y10T H05K Y10T C09D C08G C08G
additional additional additional inventional inventional inventional
Yoshiaki Minoru Isao Hiroshi Yoshiaki
Iwaya Saito Tomioka Yamada Echigo