HIGHLY HEAT-RESISTANT COMPOSITION, VARNISH FOR ELECTRICAL WIRE COATING USING THE SAME, AND HEAT-RESISTANT INSULATING ELECTRICAL WIRE USING THE SAME

摘要

A heat-resistant composition for an insulating wire includes a poly(diphenylether benzobisimidazole) polymer. A varnish for coating a wire uses the heat-resistant composition. A heat-resistant insulating electrical wire includes an insulation layer composed of the poly(diphenylether benzobisimidazole) polymer. This heat-resistant insulating electrical wire ensures excellent abrasion resistance and stability in use at 250? or above without including halogen. Thus, it is suitably used as magnetic coils, highly heat-resistant coils for motors, particularly wires for hybrid electric vehicles (HEV), and wires for airplane equipment, naval equipments, communication equipment in an army and electric/electronic harness.