Salt-free low-alkali cellulose fiber modified dyeing process
A technology of cellulose fiber and alkali modification, applied in the field of textile dyeing, can solve the problems of not being suitable for large-scale production, high chromaticity of dyeing residue, difficult treatment of wastewater, etc., and achieves high success rate, good cationization effect, and dyestuff. Consumption reduction effect
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Embodiment 1
[0078] Cellulose fiber dyeing process:
[0079] A salt-free and low-alkali modified dyeing process for cellulose fibers, comprising the following process steps:
[0080] A. Cellulose fiber modification treatment
[0081] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecule quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is a branched chain type polyepichlorohydrin dimethylamine;
[0082] B. Washing treatment
[0083] Washing the modified cellulose fibers obtained through the modification treatment in step A;
[0084] C. Dyeing
[0085] Putting the...
Embodiment 2
[0090] Cellulose fiber dyeing process:
[0091] A salt-free and low-alkali modified dyeing process for cellulose fibers, comprising the following process steps:
[0092] A. Cellulose fiber modification treatment
[0093] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecule quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is a branched chain type polyepichlorohydrin dimethylamine;
[0094] B. Washing treatment
[0095] The modified cellulose fibers obtained by the modification treatment in step A are washed with water;
[0096] C. to dye
[0097] Pu...
Embodiment 3
[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is an epoxy quaternary ammonium salt compound;
[0104] The macromolecular quaternary ammonium salt cationic modifier of the present invention is branched polyepichlorohydrin dimethylamine.
[0105] Epoxy quaternary ammonium compound:
[0106]
[0107] Branched polyepichlorohydrin dimethylamine:
[0108]
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