Process for the production of insulating coatings on electrical

Details Process for the production of insulating coatings on electrical Process for the production of insulating coatings on electrical

1974-02-06

1976-01-06

Gwinnell, Harry J.

Coating processes

Electrical product produced

Wire conductor

260 75R, 260475P, 427388, 427434, 427435, 428379, B05D 512, B05D 302

Patent

active

039314189

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.degree.C. Coating is preferably carried out using a solvent-free composition, and at a low temperature.

REFERENCES:
patent: 2216234 (1940-10-01), Emig
patent: 2512722 (1950-06-01), Lanham
patent: 2671744 (1954-03-01), Biefeld et al.
patent: 2683100 (1954-07-01), Edgar et al.
patent: 2686740 (1954-08-01), Goodwin
patent: 2936296 (1960-05-01), Precopio et al.
patent: 3058948 (1962-10-01), Mosimann et al.
patent: 3118861 (1964-01-01), Wiener
patent: 3668275 (1972-06-01), Riemhofer et al.
patent: 3707403 (1972-12-01), Dobbelstein et al.
patent: 3746570 (1973-07-01), McIntosh

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