Use of aqueous polyurethane dispersions in the finishing of leather

摘要

The invention concerns the use, in the dressing of leather, of an aqueous polyurethane dispersion containing 100 parts by weight of di- and/or polyisocyanates, 61 to 450 parts by weight (relative to the isocyanate content) of castor oil and/or epoxidized fatty-acid esters ring-opened with C1-8 alkyl alcohols.