Title:
DIAMINES, POLYIMIDE PRECURSORS AND POLYIMIDES PRODUCED BY USING THE DIAMINES, AND LIQUID CRYSTAL ALIGNING AGENTS
Document Type and Number:
WIPO Patent Application WO/2002/051909
Kind Code:
A1
Abstract:
Diamines represented by the general formula [1]; polyimide precursors and polyimides produced by using the diamines as one of the raw materials; and liquid crystal aligning agents containing the precursors and/or the polyimides: [1] wherein R?1¿ is a trivalent organic group; X?1¿ and X?2¿ are each a divalent organic group; X?3¿ is an alkyl or fluoroalkyl group having 1 to 22 carbon atoms, or a cyclic group selected from among aromatic rings, aliphatic rings, heterocycles, and rings and cycles derived therefrom by substitution; and n is an integer of 2 to 5.
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Inventors:
HOSAKA KAZUYOSHI (JP)
NAWATA HIDEYUKI (JP)
NIHIRA TAKAYASU (JP)
NAWATA HIDEYUKI (JP)
NIHIRA TAKAYASU (JP)
Application Number:
PCT/JP2001/011488
Publication Date:
July 04, 2002
Filing Date:
December 26, 2001
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
HOSAKA KAZUYOSHI (JP)
NAWATA HIDEYUKI (JP)
NIHIRA TAKAYASU (JP)
HOSAKA KAZUYOSHI (JP)
NAWATA HIDEYUKI (JP)
NIHIRA TAKAYASU (JP)
International Classes:
C07C217/86; C07C229/60; C08G73/10; G02F1/1337; (IPC1-7): C08G73/10; C07C217/86; C07C229/60; G02F1/1337
Foreign References:
| JP2000302868A | 2000-10-31 | |||
| JPH03121132A | 1991-05-23 | |||
| EP0682283A1 | 1995-11-15 |
Other References:
See also references of EP 1359181A4
Attorney, Agent or Firm:
Senmyo, Kenji (Kanda-Higashimatsushitacho Chiyoda-ku, Tokyo, JP)
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