Heat-resistant adhesive lacquers as wire coatings

Details Heat-resistant adhesive lacquers as wire coatings Heat-resistant adhesive lacquers as wire coatings

1974-09-12

1976-06-01

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

156 47, 428263, 260 312R, 260 316, 260 326R, 260 328EP, 260 334EP, 260 336EP, 260830P, 260835, 260858, C08G 4512, C08G 5144

Patent

active

039607992

ABSTRACT:
A heat-curable adhesive lacquer is provided which comprises:
(a) a polyurethane-ester-imide having (i) terminal isocyanate groups blocked by a monohydric phenol, and (ii) free hydroxyl groups and (b) an essentially linear epoxide or polyester resin having secondary hydroxyl groups and a molecular weight of above 30,000, the lacquer achieving, on drying, a B-state which is stable on storage such that the lacquer softens again when further heat is supplied to give a cross-linked resin in the C-state, which is heat stable.

REFERENCES:
patent: 3177090 (1965-04-01), Bayes
patent: 3311527 (1967-03-01), Urbanic
patent: 3320090 (1967-05-01), Graubart
patent: 3384679 (1968-05-01), Stetz
patent: 3395118 (1968-07-01), Reinking
patent: 3504627 (1970-04-01), Elder
patent: 3714289 (1973-01-01), Schober

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