Patent ID: 8679196
Filing Date: 2014-03-25
Classification: 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 R is a radical of formula wherein Hal is fluorine or chlorine, X is N or CR1, Y is an aliphatic, araliphatic or aromatic hydrocarbonic bridge optionally interrupted by a heteroatom or heteroatomic group, Z is vinyl, β-chloroethyl, β-phosphatoethyl or β-sulphatoethyl, R1 is hydrogen or Cl, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step.