PROCESS FOR PRODUCING POLYAMIC ACID SOLUTION, AND POLYIMIDE FILM

Title:

PROCESS FOR PRODUCING POLYAMIC ACID SOLUTION, AND POLYIMIDE FILM

Document Type and Number:

WIPO Patent Application WO/2010/131442

Kind Code:

A1

Abstract:

A process for producing a polyamic acid solution using specific monomers, in particular, a process for producing a polyamic acid solution having a sufficiently high viscosity, in which the time period required for increasing viscosity can be controlled or shortened; a polyimide film composition; and a product or member produced using the resin composition and having excellent heat resistance. The process includes supplementing the monomers to a low-viscosity polyamic acid solution obtained from a specific aromatic acid dianhydride, a specific diamine, an aprotic polar solvent, and an aliphatic carboxylic acid and reacting the monomers, thereby producing, within two hours, a polyamic acid having a desired solution viscosity. Provided is a polyimide film having the same coefficient of expansion as various inorganic materials.

Inventors:

OGAWA, Kohei (2-1-1 Hieitsuji, Otsu-sh, Shiga 04, 〒5200104, JP)
小川紘平 (〒04 滋賀県大津市比叡辻２－１－１株式会社カネカ内 Shiga, 〒5200104, JP)
KIKUZAWA, Akira (2-1-1 Hieitsuji, Otsu-sh, Shiga 04, 〒5200104, JP)

Application Number:

JP2010/003124

Publication Date:

November 18, 2010

Filing Date:

May 07, 2010

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Assignee:

KANEKA CORPORATION (2-4 Nakanoshima 3-chome, Kita-ku Osaka-sh, Osaka 88, 〒5308288, JP)
株式会社カネカ (〒88 大阪府大阪市北区中之島三丁目２－４ Osaka, 〒5308288, JP)
OGAWA, Kohei (2-1-1 Hieitsuji, Otsu-sh, Shiga 04, 〒5200104, JP)
小川紘平 (〒04 滋賀県大津市比叡辻２－１－１株式会社カネカ内 Shiga, 〒5200104, JP)

International Classes:

C08G73/10; B29C41/24; B32B9/00; C08J5/18; B29K79/00; B29L7/00

Attorney, Agent or Firm:

KANEKA CORPORATION (2-4 Nakanoshima 3-chome, Kita-ku Osaka-sh, Osaka 88, 〒5308288, JP)

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Claims:

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