DYEING PROCESS AND DYE COMPOSITION

摘要

A process for dyeing fibrous substrates which comprises the steps of providing a fibrous substrate; providing at least one optionally (pre)reduced sulphur dye; providing at least one reduction stable direct dye; and optionally providing at least one vat dye; and applying said reduction stable direct dye and said optionally (pre)reduced sulphur dye and optionally said vat dye to said fibrous substrate in the presence of a suitable reducing agent and then reoxidising.