Title:
POLYIMIDE VARNISH COMPRISING AROMATIC CARBOXYLIC ACID FOR CONDUCTOR COATING AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/040356
Kind Code:
A1
Abstract:
The present invention relates to polyimide varnish for conductor coating, the polyimide varnish comprising: a polyamic acid solution prepared through polymerization of at least one dianhydride monomer and at least one diamine monomer in an organic solvent; an aromatic carboxylic acid having four or more carboxylic acid groups; an alkoxy silane coupling agent; and an antioxidant, wherein the polyimide varnish has a solid content of 15 to 38 wt% on the basis of the total weight thereof, and a viscosity at 23℃ of 500 to 9,000 cP, and the coating prepared from the polyimide varnish has a degree of softening resistance of 520℃ or higher and a breakdown voltage (BDV) of 8 kV/mm or higher.
Inventors:
HWANG IN HWAN (KR)
LEE IK SANG (KR)
CHOI JEONG YEUL (KR)
LEE IK SANG (KR)
CHOI JEONG YEUL (KR)
Application Number:
PCT/KR2018/013804
Publication Date:
February 27, 2020
Filing Date:
November 13, 2018
Export Citation:
Assignee:
SKCKOLONPI INC (KR)
International Classes:
C09D179/08; H01B13/00; H01B13/06
Foreign References:
| JP2010001412A | 2010-01-07 | |||
| KR20120111255A | 2012-10-10 | |||
| JPH09291093A | 1997-11-11 | |||
| JP2018115272A | 2018-07-26 | |||
| JP2008120869A | 2008-05-29 |
Attorney, Agent or Firm:
LEE & KO IP (KR)
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