| 摘要 |
There is described a process for dyeing sheetlike fibre materials, in particular those made of or containing cellulose fibres, with anionic dyes, in particular those having fibre-reactive groups, which comprises applying an alkali-free and preferably low-electrolyte or completely electrolyte-free aqueous solution of the anionic dye by the ink-jet printing spray technique to a fibre 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 waste waters resulting from excess dyeing liquors is eliminated. If fibre-reactive dyes are used, fixation by means of alkali is not necessary; fixation is generally effected by a short heat treatment. |
