Method for producing a polyester fiber for dyeing auxiliaries, as well as the dyeing method and dyeing of polyester fiber using the same

摘要

The present invention provides a dyeing assistant for polyester fibre which can obtain a dyed material with excellent light fastness and uniform dyeing and a dyeing method using the dyeing assistant and a method for manufacturing the dyed material; the dyeing assistant contains a combination of specific compounds (A), (B), (C) and (D) in a specific formulation mixing ratio.