Process for dyeing modified polyester fiber textile material in

Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product

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8532, 8533, 8549, 8922, D06P 138, D06P 354, D06P 502

Patent

active

045839883

ABSTRACT:
Poor wet fastness properties and unsatisfactory fastness to thermofixing of dyeings on carrierfree-dyeing PES fibers with conventional disperse dyestuffs preclude the deployment of textile material of this type in the industrial wear and contract business, such as for utilitarian textiles, sportswear or the like. The reduced boil-wash stability of such disperse dyestuffs on the modified fibers can lead to washing problems because of the risk of bleeding.
Using disperse dyestuffs which contain highly polarized groupings in the molecule for dyeing carrierfree-dyeing PES fibers by the exhaust method, by the padding technique or by the padding/wind-up technique considerably improves the dyeing results in respect of the fastness properties sought and hence opens up further areas of use for said types of fiber.

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