PROCESS FOR THE MANUFACTURE OF ISOLATING SOLDERABLE COATINGS

摘要

A process and composition for producing insulating solderable coatings on electrical conductors are disclosed wherein a solution containing a polyhydroxyl compound having a heterocyclic ring system and from 5 to 12 percent by weight hydroxyl groups, and a polyfunctional isocyanate is coated on the conductor and cured at a temperature above 250 DEG C. The coated conductors are characterized by high resistance to heat and chemicals, as well as short soldering times in a solder bath.