| abstract |
The invention relates to a process for the insulative coating of electrical conductors with thermosetting resins. According to the invention, the resins used are thermosetting ester resins produced from polyhydric alcohols, carboxylic acids with two or more carboxyl groups attached to an aromatic ring and, as optional components, an aliphatic carboxylic acid and amino group-containing compounds. Low molecular weight resins are used containing from 0.85 to 1 mol of polyhydric alcohols per equivalent of co-condensed carboxylic acid. The resins used have a melt viscosity of at most 40,000 m Pa s at 120 DEG C. Coating is preferably carried out using a solvent-free composition, and at a low temperature. |