GLUING COMPOSITION FOR STICKING ENAMEL WIRES Russian patent published in 1997 - IPC

FIELD: gluing compositions. SUBSTANCE: gluing composition has 10-14 wt. -% polyamide at m. p. 130-160 C and viscosity number 130-150 cm³/g that is polycondensation product of 30-50 wt.-% of E-caprolactam, 20-50 wt.-% of adipic acid salt and hexamethylenediamine and 20-30 wt.-% of sebacic acid salt and hexamethylenediamine; 0.6-0.7 wt.-% alcohol-soluble dye and mixture of solvents: 43-45 wt.-% tricresol, 21.3-22.4 wt.-% methylcellosolve, 21-22 wt.-% ethyl alcohol. Properties: gluing coating thickness is 0.025-0.030 mm, gluing strength at 20 C is 2.7H, at 100 C - 2.2H, temperature of reverse softening is 125-140 C at loading 0.8H, resistance at 100% moisture - above 10 days; composition endures adhesion to isolation at relative elongation 23%. EFFECT: enhanced quality of composition. 2 tbl