Polyurethane wire enamel has very high resistance toheat, temperature classification reaches more than 200 grades, and has good solderability and physicals.

High temperature classification PAUR wire enamel , step mainly comprises imines, synthesizing of thanomin modified polyester resin, '-diphenylmethane diisocyanate is trimerical synthetic, the preparation of the synthetic and urethane envelope curve paint of blocked isocyanate resin, imines described in it, the synthesis step of thanomin modified polyester resin is: in reactor, add Diethylene Glycol, diethanolamine, TriMethylolPropane(TMP), three-(2-hydroxyethyl) chlorinated isocyanurates and catalyzer, be heated to 100 DEG C-120 DEG C, add again the imines di-carboxylic acid of dimethyl terephthalate (DMT) and part dianhydride and modification, stirring and dissolving, more than being warming up to 140 DEG C-150 DEG C reaction 4h, more than being warming up to 220 DEG C-230 DEG C reaction 12h, when head temperature is carried out vacuum operating during lower than 65 DEG C, until viscosity is between 1300-1800mPas (measuring under 25 DEG C of conditions), stop vacuum operating, adding the continuous stirring of cresols and dimethylbenzene molten extremely clarification and solid content is 44%, make imines, thanomin modified polyester resin.

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