Foley & Lardner LLP
Insulating varnish and production method therefor and insulated electric wire using same and production method therefor
An insulating varnish includes a polyamide-imide resin including a repeat unit represented by Formula (1) below derived from a synthesis reaction between a resin component (X) and a diisocyanate component (Y). The resin component (X) is derived from a synthesis reaction between a diamine component including aromatic diamines including g a divalent aromatic group (R) including three or more aromatic rings, and an acid component in the presence of an azeotrope solvent. The diisocyanate component (Y) includes a 2,4′-diphenylmethane diisocyanate (Y1) and a 4,4′-diphenylmethane diisocyanate (Y2).In Formula (1), R denotes the divalent aromatic group including three or more aromatic rings, and m and n denote an integer of from 1 to 99.
Hitachi Cable, Ltd.
C H C H Y Y Y C C C Y C C
C08G H01B C09D H01B Y10T Y10T Y10T C09D C08G C08G Y10T C08G C08G
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Hideyuki Yuki Tomiya Shuta Yasuhiro
Kikuchi Honda Abe Nabeshima Funayama