High temperature resistant fast soldering wire enamel

Details High temperature resistant fast soldering wire enamel High temperature resistant fast soldering wire enamel

1989-09-06

1991-03-05

Lesmes, George F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

428379, 528 45, 174110SR, C08F28304, C08G 6948, C08L 7500

Patent

active

049978918

ABSTRACT:
A solderable polyurethane wire enamel composition comprising a mixture of a blocked isocyanate and polyesterimide resin wherein the ratio of isocyanate groups in the blocked isocyanate to hydroxyl groups in the polyesterimide resin is about 0.82:1 to about 5.7:1 and the hydroxyl to carboxylic acid ratio of the raw materials used in preparing the polyesterimide is about 1.4:1 to about 2.5:1.

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