Impregnation of leather with polyurethane dispersions

摘要

A method of preparing an impregnated leather composite is provided. A low density leather sheet is impregnated with an aqueous ionic dispersion of a polyurethane polymer. The polyurethane polymer which is impregnated in the leather sheet is ionically coagulated from the dispersion. The impregnate is dried to form an impregnated leather composition.