Process for the end-to-end dyeing of cellulosic fibres

Details Process for the end-to-end dyeing of cellulosic fibres Process for the end-to-end dyeing of cellulosic fibres

1987-03-26

1989-10-31

Niebling, John F.

Bleaching and dyeing; fluid treatment and chemical modification

Reactive dye composition, process, or product

8189, 8190, C09B 6200, D06M 1334

Patent

active

048774138

ABSTRACT:
The invention relates to a process for the end-to-end dyeing of cellulosic materials, or blends that contain cellulose, with direct and/or reactive dyes by the pad dyeing process, which comprises using an aqueous liquor that contains at least one water-soluble direct or reactive dye and at least one water-soluble anionic, colorless organic compound having an affinity factor A, at a concentration of 0.2 to 0.3 g/l, for mercerized cotton of 1.1 to 4, said factor A being the quotient of the concentration of the water-soluble, colorless organic compound in a liquor without addition of dye, before impregnation, divided by the concentration of the water-soluble, colorless organic compound in the residual liquor without dye after impregnation. The process of this invention is suitable for dyeing textile cellulosic materials or blends containing cellulose to give end-to-end dyeings of good fastness properties.

REFERENCES:
patent: 2928711 (1960-03-01), Denyer et al.
patent: 3400121 (1968-09-01), Weckler et al.
patent: 4180664 (1979-12-01), Perrin et al.
patent: 4246670 (1981-01-01), Perrin et al.
patent: 4300903 (1981-11-01), Engelhardt et al.
patent: 4504272 (1985-03-01), Ong
CA 82:172505c Yasuda et al., (1975).
CA 102:80212h Sumitomo, (1985).
CA 100:158175d Gunze, (1984).

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