PROCESS TO MAKE SYNTHETIC LEATHER AND SYNTHETIC LEATHER MADE THEREFROM

摘要

A synthetic leather is made by impregnating or coating a non-woven or woven textile with an aqueous polyurethane dispersion comprised of a nonionizable polyurethane and an external stabilizing surfactant. The impregnated textile is then exposed to water containing a coagulant for a coagulation time sufficient to coagulate the dispersion. The coated textile is heated to from a poromeric layer. The method may be used to form a synthetic leather having excellent wet ply adhesion and may contain an insoluble multivalent cation salt of an organic acid.