Title:
POLYAMIC ACID, POLYIMIDE, PROCESS FOR PRODUCING THESE, AND FILM OF THE POLYIMIDE
Document Type and Number:
WIPO Patent Application WO/2002/010253
Kind Code:
A1
Abstract:
A polyamic acid having repeating units represented by the general formula (1): (1) wherein the norbornane skeleton includes the four forms represented by and a polyimide obtained by imidizing the polyamic acid. This polyimide not only has the excellent material properties inherent in polyimides but has been regulated with respect to heat resistance, melt flowability, optical properties, chemical resistance, electrical properties, film shape, etc.
Inventors:
YAMASHITA WATARU (JP)
WATANABE KATSUJI (JP)
OIKAWA HIDEAKI (JP)
ITO HISATO (JP)
WATANABE KATSUJI (JP)
OIKAWA HIDEAKI (JP)
ITO HISATO (JP)
Application Number:
PCT/JP2001/006434
Publication Date:
February 07, 2002
Filing Date:
July 26, 2001
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
YAMASHITA WATARU (JP)
WATANABE KATSUJI (JP)
OIKAWA HIDEAKI (JP)
ITO HISATO (JP)
YAMASHITA WATARU (JP)
WATANABE KATSUJI (JP)
OIKAWA HIDEAKI (JP)
ITO HISATO (JP)
International Classes:
C08G73/10; (IPC1-7): C08G73/10; C08J5/18; C09D179/08
Foreign References:
| JPH107906A | 1998-01-13 | |||
| EP0896014A1 | 1999-02-10 |
Other References:
See also references of EP 1321487A4
Attorney, Agent or Firm:
Naemura, Shinichi (5-36 Kinko-ch, Kanagawa-ku Yokohama-shi Kanagawa, JP)
Download PDF: