Salt-free low-alkali dyeing method for cellulosic fibers
A technology of cellulose fiber and dyeing method, which is applied in dyeing method, textiles and papermaking, etc. It can solve the problems of large amount of alkali consumption, difficult treatment of waste water, pollution, etc., and achieve the effect of uniform dyeing, uniform modification and sufficient modification
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[0077] Example 1
[0078] Cellulose fiber dyeing process:
[0079] A salt-free and low-alkali dyeing method of cellulose fiber includes the following process steps:
[0080] A. Modification of cellulose fiber
[0081] Put the cellulose fiber into the container, and then add water to the container, and then modify the cellulose fiber with two cationic modifiers: small molecule quaternary ammonium salt cation modifier and polymer quaternary ammonium salt cation modifier , The modified cellulose fiber is obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyltrimethylammonium chloride, and the polymer quaternary ammonium salt The salt cationic modifier is polyamide polyamine epichlorohydrin;
[0082] B. Washing treatment
[0083] Subjecting the modified cellulose fiber obtained by the modification treatment in step A to water washing treatment;
[0084] C, dyeing
[0085] Put the modified cellulose...
Example Embodiment
[0089] Example 2
[0090] Cellulose fiber dyeing process:
[0091] A salt-free and low-alkali dyeing method of cellulose fiber includes the following process steps:
[0092] A. Modification of cellulose fiber
[0093] Put the cellulose fiber into the container, and then add water to the container, and then modify the cellulose fiber with two cationic modifiers: small molecule quaternary ammonium salt cation modifier and polymer quaternary ammonium salt cation modifier , The modified cellulose fiber is obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyltrimethylammonium chloride, and the polymer quaternary ammonium salt The salt cationic modifier is polyamide polyamine epichlorohydrin;
[0094] B. Washing treatment
[0095] Subjecting the modified cellulose fiber obtained by the modification treatment in step A to water washing treatment;
[0096] C, dyeing
[0097] Put the modified cellulos...
Example Embodiment
[0102] Example 3
[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is 3-acrylamide-2-hydroxypropyltrimethylammonium chloride;
[0104] The polymer quaternary ammonium salt cationic modifier of the present invention is polyamide polyamine epichlorohydrin.
[0105] 3-acrylamide-2-hydroxypropyltrimethylammonium chloride:
[0106]
[0107] Polyamide polyamine epichlorohydrin:
[0108]
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