Method for dissolving and degassing polymer, and method for producing porous film

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United States of America Patent

PATENT NO 9296886
APP PUB NO 20140128517A1
SERIAL NO

14112237

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Abstract

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A method for dissolving and degassing a polymer is described, including a dissolution/degassing step. In the dissolution/degassing step, a mixture containing the polymer and a solvent is agitated, in a pressure-reduced condition with a gauge pressure of −50 to −90 kPa and at a temperature lower than the boiling point of the solvent in the pressure-reduced condition but higher than the freezing point of the same, to dissolve the polymer and simultaneously degas the polymer solution, so as to obtain a polymer solution.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI CHEMICAL CORPORATION1-1 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mizuta, Masahiko Aichi, JP 23 136
Shinada, Katsuhiko Aichi, JP 9 66

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