Method for salt-free dyeing

摘要

The invention relates to a process for increasing the dyeability of textile fibers and fabrics without the need to use a salt in the dyebath. The dyeing is performed on fibers or fabrics which have been treated with sodium hydroxide and an epoxy ammonium salt of the formula: <IMAGE> wherein R,R',R'', and R''' are alkyl radicals having 1 to 8 carbon atoms, and X- is an anionic group selected from the group consisting of sulfate, sulfonate and halide.