Production of dyeings by the inkjet printing technique on modifi

Details Production of dyeings by the inkjet printing technique on modifi Production of dyeings by the inkjet printing technique on modifi

1993-09-23

1994-09-20

Prescott, Arthur C.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

8181, 8189, 8565, 8574, D06P 139, D06P 138, D06M 13342, D06M 1335

Patent

active

053485572

ABSTRACT:
There is described a process for dyeing sheetlike fiber materials, in particular those made of or containing cellulose fibers, with anionic dyes, in particular those having fiber-reactive groups, which comprises applying an alkali-free and preferably low-electrolyte or completely electrolyte-free aqueous solution of the anionic dye by the inkjet printing spray technique to a fiber material which has been pretreated and modified with a compound that contains one or more primary, secondary or tertiary amino groups or quaternary ammonium groups, which amino/ammonium groups may be part of a heterocycle. There is generally no need for an aftertreatment by washing. The costly treatment of wastewaters resulting from the excess dyeing liquors otherwise obtained is eliminated. If fiber-reactive dyes are used, fixation by means of alkali is not necessary; it is generally effected by a short heat treatment.

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Smith, B., et al., Textile Chemist and Colorist 19: No. 8, pp. 23-29 (1987).
Graham, L. A., Textile Chemist and Colorist 21: No. 6, pp. 27-32 (1989).

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