Film forming solution, porous film obtained therefrom and coated

Details Film forming solution, porous film obtained therefrom and coated Film forming solution, porous film obtained therefrom and coated

1994-02-10

1996-04-23

Lusignan, Michael

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521185, 521189, 428458, 4284735, B32B 1508, C08G 6344, C08G 6944, C08G 7310

Patent

active

055103952

ABSTRACT:
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.

REFERENCES:
patent: 4535115 (1985-08-01), Bakshi et al.
patent: 4923954 (1990-05-01), Klobucar et al.
patent: 5183611 (1993-02-01), Yosomiya et al.
Abstract of JP-A 53-78282, Jan., 1980.

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