Water soluble polyamide, coated wire and method of coating

Details Water soluble polyamide, coated wire and method of coating Water soluble polyamide, coated wire and method of coating

C - Chemistry, Metallurgy

08

G

117/196, 402/221

C08G 73/10 (2006.01) C08L 79/08 (2006.01) H01B 3/30 (2006.01)

Patent

CA 1175598

Abstract A water r soluble polyimide isdescribed comprising the reaction product of butane tetracarboxyllc acid (BTC), a multifunctional amine of the formula: Image and a diamine, where the multifunctional amine constitutes- at least 5% of the total amine equivalents of the reactants and preferably 15% to 40%. An aqueous solution of this polyimide, a method of coating electrical conductors with this polyimide and the electrical conductors insulated with the polyimide are also described. The polyimide particularly useful as an insulation coating for magnet with, is made by reacting the multifunctional amine with the BTC followed by reaction with the diamine receiving the condensed water produced during the reaction

399868

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