Method for producing insulated winding wire by extruding...

H - Electricity – 01 – B

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18/771, 337/82

H01B 3/30 (2006.01) H01B 3/42 (2006.01) H01B 13/14 (2006.01)

Patent

CA 1136817

Abstract An improved method of producing enamel-insulated winding wire is disclosed which comprises extruding around a conductor wire a coating of a partly crystalline thermoplastic having a crystallite melting point above 170°C and comprising an aromatic polyether ketone of the formula: Image wherein each Ar may be the same or different and represents an aromatic radical and n signifies a whole number between 50 and 200. The product exhibits improved softening temperature meeting industry standards, as well as satisfactory heat-shock values and surface hardness.

360090

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