| abstract |
Means comprising, in a carrier, a combination of specific sulfinic acid derivatives of the formula (I), wherein M is a hydrogen atom or one equivalent of a mono- or polyvalent cation, R is derived from a peptide or is a radical according to one of the formulas (II) to (VI), (For the meaning of the remaining substituents see claim 1) and contain at least one nonionic surfactant, allow permanent discoloration of colored substrates without darkening of the decolored substrate. The substrate structure is protected during the Entfärbevorgangs. |