Electrical insulating polyurethane paint

Abstract

Abstract PURPOSE:To provide the titled paint which is high-solid and has excellent coating workability and solderability, by blending a polyol component with a specified blocked isocyanate component. CONSTITUTION:A mixture of 90-40wt% blocked isocyanate (A) obtd. by reacting a lactam (a) of formula I (wherein n is 1-5), a phenol (b) and a diisocyanate of formula II (wherein R is a bivalent hydrocarbon group) in a molar ratio of a/b=8/2-2/8 and a+b/c 2 and 10-60wt% blocked isocyanate (B) obtd. by adding tolylene diisocyanate, etc. to a triol and blocking free isocyanate groups with a phenol is used as a blocked isocyanate component. Said blocked isocyanate component is mixed with a polyol component such as Nipporan 2006 (a product of Nipon Polyurethane K.K.) to obtain the titled paint.

Inventors

• 👤 Ikuta Terada
• 👤 寺田　郁太
• 👤 Taisuke Okada
• 👤 泰典 岡田
• 👤 Shozo Kasai
• 👤 葛西　正三

Bibliographic Details