Title:
POLYIMIDE VARNISH
Document Type and Number:
WIPO Patent Application WO/2021/171939
Kind Code:
A1
Abstract:
Provided is a polyimide varnish which can be inhibited from suffering blushing due to moisture absorption, changes little in viscosity, has excellent storage stability, is less apt to cause foreign matter, clogging, etc. when used in obtaining films, the obtained films having little surface roughness and being able to have properties inherent in the polyimide material even after drying and heating, and is suitable for use in forming, for example, a liquid-crystal alignment film. The polyimide varnish is characterized by comprising the following ingredient (A) and ingredient (B). Ingredient (A): a polyimide (A) which is a product of imidization of a polyimide precursor. Ingredient (B): an amine compound (B) having, in the molecule, a secondary or tertiary amino group and a cyclic group that is either a nitrogenous aromatic heterocycle or an aromatic hydrocarbon group, the amino group having been bonded to an acyclic aliphatic hydrocarbon group or a nonaromatic cyclic hydrocarbon group.
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Inventors:
ASHIZAWA RYOICHI (JP)
MATSUMOTO KINYA (JP)
MATSUMOTO KINYA (JP)
Application Number:
PCT/JP2021/003962
Publication Date:
September 02, 2021
Filing Date:
February 03, 2021
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
C08K5/17; C08L79/08; G02F1/1337
Domestic Patent References:
| WO2003100510A1 | 2003-12-04 | |||
| WO2016140328A1 | 2016-09-09 |
Foreign References:
| JP2011203714A | 2011-10-13 | |||
| JP2004211064A | 2004-07-29 | |||
| JP2009511717A | 2009-03-19 | |||
| JP2003183496A | 2003-07-03 | |||
| JPH08248423A | 1996-09-27 | |||
| JP2006137796A | 2006-06-01 | |||
| JPS63317553A | 1988-12-26 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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