INSULATING FILM FOR ELECTROMAGNETIC COIL, AND MOTOR AND TRANSFORMER EACH EQUIPPED WITH SAME

Title:

INSULATING FILM FOR ELECTROMAGNETIC COIL, AND MOTOR AND TRANSFORMER EACH EQUIPPED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2011/071003

Kind Code:

A1

Abstract:

Disclosed is an insulating film for electromagnetic coils which is constituted of a liquid-crystal polyester characterized by comprising structural units represented by the following formulae (1), (2), and (3) and having a content of structural units including a 2,6-naphthalenediyl group of 40 mol% or more of the total content of all structural units. (1) -O-Ar1-CO- (2) -CO-Ar2-CO- (3) -O-Ar3-O- (In the formulae, Ar1 represents 2,6-naphthalenediyl, 1,4-phenylene, or 4,4'-biphenylene; Ar2 and Ar3 each independently represents 2,6-naphthalenediyl, 1,4-phenylene, 1,3-phenylene, or 4,4'-biphenylene; and the hydrogen atoms in the group represented by Ar1, Ar2, or Ar3 each independently may have been replaced with a halogen atom, a C1-10 alkyl, or a C6-20 aryl.)

Inventors:

HOSODA TOMOYA (JP)
OKAMOTO SATOSHI (JP)

Application Number:

PCT/JP2010/071803

Publication Date:

June 16, 2011

Filing Date:

December 06, 2010

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)
HOSODA TOMOYA (JP)
OKAMOTO SATOSHI (JP)

International Classes:

C08G63/60; C08J5/18; H01B3/42; H01B17/56; H01F5/06; H01F27/32; H02K3/30

Domestic Patent References:

WO2008149869A1

2008-12-11

Foreign References:

JP2009155623A	2009-07-16
JP2007154169A	2007-06-21
JP2005213418A	2005-08-11
JP2006035504A	2006-02-09
JPH03122116A	1991-05-24
JPH11279269A	1999-10-12