Process for the treatment of dyed cellulosic fiber material

摘要

A process is described for fixing reactive or substantive dyes on cellulosic fiber material, which process comprises treating the fiber before, during or after dyeing with a liquor comprising a homo- or copolymer containing repeating structures of formula wherein the variables have the meanings claimed in the claims. The dyeings and prints so obtained are distinguished by improved fastness to wet treatments.