Patent ID: 8795389
Filing Date: 2014-08-05
Classification: C07D,C14C

Abstract:
1. A process for the production of tanned leather, skin or pelt by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of formula (I), wherein X is fluorine, chlorine, ( R1 is hydrogen, C R2 is hydrogen or hydroxy, m is 1, 2 or 3, q is of from 1 to 10, M is hydrogen or an alkali metal cation or an ammonium cation, the ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step.