Solid, particular material on the basis of compounds containing carbamoylsulfonate groups

摘要

Solid particulate material comprises (a) at least one compound containing carbamoyl sulfonate groups and (b) at least one emulsifier. Independent claims are also included for: (1) preparing the solid particulate material comprising reacting at least one organic polyisocyanate with at least one bisulfite in the presence of water and of the component (b) and optionally a carboxylic acid of component (c), optionally with the addition of further additives, and either precipitating the particulate material with an organic solvent medium and drying subsequently or drying the reaction mixture; (2) process for tanning of hides and skins comprising pre-treating hides or skins with the solid particulate material by washing, liming, optionally deliming and depilation; (3) leather and furs produced using the solid particulate material; and (4) producing leather and/or fur comprising treating pelts material prepared with 0.5-10%, preferably 1-4%, based on the proportion of component (a) of the solid particulate material in an aqueous liquor at 10-60[deg] C and pH of 5-10, preferably 7-9 until obtaining a tanned intermediate with a shrinkage temperature of at least 65[deg] C, preferably at least 70[deg] C.