High solids polyamide-imide magnet wire enamel

Details High solids polyamide-imide magnet wire enamel High solids polyamide-imide magnet wire enamel

1981-11-17

1983-02-15

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

528 45, 528 73, 525241, 427118, 428379, C08K 534

Patent

active

043742211

ABSTRACT:
A high solids content, low molecular weight polymer, low viscosity polyamide-imide enamel is described. The enamel is a reaction product of polyisocyanate, trimellitic anhydride, and an isocyanate blocking alcohol having a ratio of free isocyanate to total carboxyl and anhydride groups of 0.99:1 to 0.85:1. The method of making the enamel and the method of coating electrical conductors such as magnet wire with such enamel are also disclosed.

REFERENCES:
patent: 3997513 (1976-12-01), Noda et al.
patent: 4088637 (1978-05-01), Zecher et al.
patent: 4296229 (1981-10-01), Pauze et al.

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