Insulated wire and production process of the insulated wire

Details Insulated wire and production process of the insulated wire Insulated wire and production process of the insulated wire

H - Electricity

01

B

117/196, 18/798

H01B 3/30 (2006.01) C08G 73/10 (2006.01) H01B 7/29 (2006.01) H01B 13/14 (2006.01)

Patent

CA 2000927

ABSTRACT OF THE DISCLOSURE The insulated wire having excellent thermal resistance and good surface appearance is obtained by producing from specific polyamide in a temperature range of 300 °C to 450 °C and controlling moisture content to 200 ppm or less in the polyimide used as raw materials. The polyimide has a recurring units of the formula: Image (I) (wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having two or more carbon atoms, a cyclo-aliphatic radical, a monoaromatic radical, a condensed polyaromatic radical and a non-condensed polyaromatic radical wherein the aromatic radicals are mutually connected with a bond or a crosslinking function, X is a divalent radical of a single bond, sulfur atom, sulfonyl radical, carbonyl radical, isopropylidene radical or hexafluoroisopropylidene radical).

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