The general composition of a polyurethane wire enamel consists of a polyisocyanate that has been reacted (blocked) with a phenol a polyester polyol, a catalyst, solvents, and additives. At elevated temperatures in the wire oven deblocking occuures and the blocking agent (phenol) is evaporated. The free isocyanate groups then form urethane bonds with the free OH-groups of the polyester polyol. The decomposition of urethane groups at high temperature is the reason for the solderability of polyurethane wire enamels.

Deaweld S 193
Wire Enamel R 77
Wire Enamel R 83
Wire Enamel 1332
Wire Enamel 1342
Wire Enamel 1347
Wire Enamel 1360
Wire Enamel 1380

Electro Insulation enamel Primary Insulation Contacts

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