Patent ID: 6437249
Filing Date: 2002-08-20
Classification: H01B,H01F

Abstract:
A multilayer insulated wire having two or more extrusion-coating insulating layers provided on a conductor directly or via some other layer, or provided on the outside of a multicore wire composed of conductor cores or insulated cores that are collected together, wherein at least one of the insulating layers is made of a mixture prepared by mixing 100 parts by weight of a polyethersulfone resin that has a reduced viscosity of 0.36 or more, which is the viscosity of 1 g of the polyethersulfone resin in 100 ml of dimethylformamide measured using an Ubbelohde's viscometer at a temperature of 25Â° C., and 10 to 100 parts by weight of at least one inorganic filler selected from the group consisting of titanium oxide and silica; and said layers have an overall thickness within the range of 60 to 180 &mgr;m.