申请人:Sanyu Rec Co., Ltd.
公开号:EP2767983A1
公开(公告)日:2014-08-20
The invention provides a polyurethane resin composition for electrical insulation that has excellent compatibility between an isocyanate component and a polyol component, and that exhibits excellent heat resistance, moisture resistance, and insulation properties.
The polyurethane resin composition for electrical insulation comprises (1) Part A comprising a polyisocyanate component obtained from at least one member selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, and containing one or more isocyanurate groups and one or more allophanate groups; and (2) Part B comprising a polyol component, wherein the polyisocyanate component has a molar ratio, (a)/(b), of isocyanurate groups (a) to allophanate groups (b) of 85/15 to 15/85.
本发明提供了一种用于电气绝缘的聚氨酯树脂组合物,该组合物的异氰酸酯组分和多元醇组分之间具有极佳的相容性,并且具有优异的耐热性、防潮性和绝缘性。
用于电气绝缘的聚氨酯树脂组合物包括:(1) A 部分,包含多异氰酸酯组分,该组分至少取自脂肪族二异氰酸酯和脂环族二异氰酸酯中的一种,并含有一个或多个异氰脲酸酯基团和一个或多个异烷酸酯基团;以及 (2) B 部分,包含多异氰酸酯组分,该组分至少取自脂肪族二异氰酸酯和脂环族二异氰酸酯中的一种,并含有一个或多个异氰脲酸酯基团和一个或多个异烷酸酯基团;(2) B 部分包括多元醇组分,其中多异氰酸酯组分的异氰脲酸酯基团(a)与异 氨酸基团(b)的摩尔比(a)/(b)为 85/15 至 15/85。