Title:
METHOD FOR PRODUCING POLYIMIDE FILM AND POLYAMIC ACID SOLUTION COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2007/135982
Kind Code:
A1
Abstract:
Disclosed is a polyamic acid solution composition which is obtained by introducing a specific chemical structure into a polyamic acid at a ratio within a specific range. The polyamic acid has a chemical structure composed of a 3,3',4,4'-biphenyltetracarboxylic acid component and/or a pyromellitic acid component, and a paraphenylenediamine component. Also disclosed is a method for producing a polyimide film wherein the polyamic acid solution composition is coated over a base and the thus-formed coating film is subjected to a heat treatment.
Inventors:
TAKABAYASHI, Seiichirou (Ube Chemical Factory, 1978-10, Oaza Kogushi, Ube-sh, Yamaguchi 67, 7550067, JP)
高林 誠一郎 (〒67 山口県宇部市大字小串１９７８－１０ 宇部興産株式会社 宇部ケミカル工場内 Yamaguchi, 7550067, JP)
高林 誠一郎 (〒67 山口県宇部市大字小串１９７８－１０ 宇部興産株式会社 宇部ケミカル工場内 Yamaguchi, 7550067, JP)
Application Number:
JP2007/060217
Publication Date:
November 29, 2007
Filing Date:
May 18, 2007
Export Citation:
Assignee:
Ube Industries, Ltd. (1978-96, Oaza KogushiUbe-shi, Yamaguchi 33, 7558633, JP)
宇部興産株式会社 (〒33 山口県宇部市大字小串１９７８番地の９６ Yamaguchi, 7558633, JP)
TAKABAYASHI, Seiichirou (Ube Chemical Factory, 1978-10, Oaza Kogushi, Ube-sh, Yamaguchi 67, 7550067, JP)
宇部興産株式会社 (〒33 山口県宇部市大字小串１９７８番地の９６ Yamaguchi, 7558633, JP)
TAKABAYASHI, Seiichirou (Ube Chemical Factory, 1978-10, Oaza Kogushi, Ube-sh, Yamaguchi 67, 7550067, JP)
International Classes:
C08J5/18; B29C41/12; C08G73/10; B29K79/00; B29L7/00
Attorney, Agent or Firm:
HATORI, Osamu (Akasaka HKN BLDG. 6F, 8-6 Akasaka 1-chome,Minato-ku, Tokyo 52, 1070052, JP)