METHOD OF MANUFACTURING BASE FOR ARTIFICIAL LEATHER BASED ON POLYURETHANE WHICH DOES NOT CONTAIN DIMETHYLFORMAMIDE (DMFA) OR OTHER SOLVENTS OR WATER, AND CORRESPONDING METHOD OF MANUFACTURING ARTIFICIAL LEATHER Russian patent published in 2024 - IPC D06N3/00 

FIELD: artificial leather.

SUBSTANCE: method of producing base (5) for artificial leather based on polyurethane, which does not contain dimethylformamide (DMFA) or other solvents or water, involving the following stages: preparation of base (1,1'); spraying polyurethane layer (11) on base (1,1'); this step includes: preparation of component (A) and component (B) of polyurethane (11); combining two components (A, B) to obtain a mixture; uniform spraying of mixture onto base (1,1') with formation of polyurethane layer (11); application of substrate (12) on polyurethane layer (11) forming base (5); drying base (5).

EFFECT: disclosed is a method of manufacturing a base for artificial leather based on polyurethane which does not contain dimethylformamide (DMFA) or other solvents or water, and a corresponding method of manufacturing artificial leather.

19 cl, 11 dwg, 1 tbl