PROCESS FOR DYEING BLENDED FABRICS COMPRISING POLYESTER FIBRES AND WOOL AND/OR OTHER POLYAMIDE FIBRES

摘要

The invention relates to a pad-hot batch-thermofix process for the single-bath dyeing of polyester/polyamide blends with disperse and wool dyes. The textile material is padded from a weakly acid medium with an aqueous liquor that contains both classes of dyes, and the moist impregnation is batched at 85 to 107 DEG C for 15 to 60 minutes and then heated without drying at 160 to 185 DEG C for 60 to 120 seconds to effect thermosoling. The polyester fibre component used comprises carrierlessly dyeable fibres composed of polyethylene terephthalate modified with hydroxycarboxylic acids or aliphatic dicarboxylic acids or composed of polyethylene terephthalate modified with polyethylene oxide in the form of a block copolymer. Wool does not suffer any damage under these fixing conditions.