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Title:
RESIN VARNISH, INSULATED ELECTRIC WIRE, AND METHOD FOR PRODUCING INSULATED ELECTRIC WIRE
Document Type and Number:
WIPO Patent Application WO/2020/016954
Kind Code:
A1
Abstract:
The resin varnish according to one aspect of the present invention comprises a polyimide precursor which is a product of reaction between aromatic tetracarboxylic dianhydrides and an aromatic diamine, wherein the polyimide precursor has a weight-average molecular weight of 10,000-180,000 and the aromatic tetracarboxylic dianhydrides include a biphenyltetracarboxylic dianhydride in an amount of 25-95 mol% per 100 mol% the aromatic tetracarboxylic dianhydrides.

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Inventors:
MAEDA SHUHEI (JP)
YAMAUCHI MASAAKI (JP)
SUGAWARA JUN (JP)
TAMURA YASUSHI (JP)
YAMAMOTO YUUKI (JP)
Application Number:
PCT/JP2018/026872
Publication Date:
January 23, 2020
Filing Date:
July 18, 2018
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO ELECTRIC WINTEC INC (JP)
International Classes:
C09D179/08; C08G73/12; C08L79/08; C09D5/25
Domestic Patent References:
WO2014141322A12014-09-18
WO2016147958A12016-09-22
Foreign References:
JP2016030760A2016-03-07
JP2017095594A2017-06-01
JP2015135767A2015-07-27
JP2017162769A2017-09-14
JP2014136743A2014-07-28
JPH09106711A1997-04-22
JP2013155281A2013-08-15
JP2013197441A2013-09-30
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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