ARTIFICIAL LEATHER AND METHOD FOR PRODUCTION THEREOF Russian patent published in 1994 - IPC

FIELD: manufacture of artificial leather. SUBSTANCE: method involves forming face and adhesive polyurethane layers on backing from 25-% solution of polyurethane in dimethylformamide with 0.8-1.1 wt. -% of lithium chloride and 9.9-10.1 wt. -% of polyurethanesemicarbazide. Then said layers are doubled with cotton textile base. Said base is impregnated in advance with a solution of natural bischofite to its content in artificial leather reaching 60-70 wt. -% of dry matter. EFFECT: production of fire-resistant artificial leather. 3 cl, 2 tbl