PROCESS FOR PRODUCING LEATHER AND AQUEOUS FORMULATIONS SUITED THEREFOR

• Main Authors: BOHRES, Edward, DANISCH, Peter
• Format: Patent
• Language: English; French; German
• Published: 31.01.2018
• Subjects: APPARATUS THEREFOR; CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS FOR TANNING; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; HIDES; LEATHER; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PELTS; SKINS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A process for producing leather comprises treating part-processed hides, crust leathers or pelts with at least one aqueous float comprising (A) at least one amphiphilic organic copolymer, (B) at least one silicone compound having at least one carboxylic acid group or at least one carboxylic anhydride group per molecule, (C) at least one surface-active compound selected from emulsifiers having at least one phosphorus atom per molecule, (D) at least one surface-active compound selected from N-acylated amino acids, (E) at least one surface-active compound comprising at least one C10-C30-alkyl radical, branched or unbranched, or at least one polyisobutene moiety, and at least one ionic or aqueous-ionizable group, other than amphiphilic copolymer (A) and surface-active compound (C), and the aqueous float is free of waxes and oils.