Active dye printing process

A technology of reactive dyes and printing technology, which is applied in dyeing, textiles and papermaking, etc. It can solve the problems of excessive ammonia nitrogen discharge, easy bleeding, poor color stability, etc., to reduce hydrolysis, reduce steaming time and efficiency, The effect of prolonged stability

Inactive Publication Date: 2018-06-12
SHANGHAI ANOKY GRP +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that the use of urea in the conventional printing process in the prior art will easily cause the discharge of ammonia nitrogen to exceed the standard, and the process of padding lye after the two-phase method is used for printing is easy to ooze when it encounters wet pattern, and it is easy to seep when wet short. The defect of poor stability of color development in the steaming process provides a reactive dye printing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0033] The reactive dye printing process in Examples 1 to 5 includes the following steps: the white gray cloth is printed successively, dried (100° C.), treated with alkali, steamed and fixed (temperature 130° C., time 45 s), and the first time Washing, soaping, and washing for the second time;

[0034] In the printing process, in the printing paste, the specific types and amounts of dyes in Examples 1 to 5 are shown in Table 1. In addition to the dyes, the following components are also included: the amount of anti-dyeing salt S is 1%, sodium alginate paste The dosage is 50% and the balance is water, and the above percentages are the mass percentages of each component relative to the total amount of printing paste. Printing pastes do not contain alkaline agents and / or urea.

[0035] In the soda rolling process, the composition of the color-fixing lye comprises the following components: the consumption of sodium carbonate is 10%, the consumption of sodium silicate is 8%, the c...

Embodiment 6

[0040] Except following parameter, the process parameter of embodiment 6 is all identical with embodiment 1.

[0041] The rolling liquid rate is 30%; during the alkali rolling process, the amount of sodium carbonate in the color-fixing lye used is 5%, the amount of sodium silicate is 10%, and the amount of sodium hydroxide is 2%; The dosage of reactive dye is 5%, the dosage of resist salt S is 1.5%, and the dosage of sodium alginate paste is 55%.

Embodiment 7

[0043] Except following parameter, the processing parameter of embodiment 7 is all identical with embodiment 1.

[0044] The liquid rolling rate is 50%; during the alkali rolling process, the amount of sodium carbonate used in the color-fixing lye is 15%, the amount of sodium silicate is 5%, and the amount of sodium hydroxide is 0.5%; the anti-staining salt in the printing paste The dosage of S is 0.5%, the dosage of sodium alginate paste is 45%; the drying temperature is 95°C; the condition of steaming and color fixing is: temperature 125°C, time 60s.

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Abstract

The invention discloses an active dye printing process which includes the steps of printing, drying, roll alkali treatment, steaming fixation, washing, soaping and washing. In the printing process, dyes in printing paste are divinyl sulfone active dyes or 'double-active-group active dyes comprising a vinyl sulfone active group and a chorotriazine active group'. In roll alkali treatment, mangle expression is 30-50%. Adopted fixation alkali liquor comprises 5-15% of sodium carbonate, 5-10% of sodium silicate, 0.5-2% of sodium hydroxide and the balance water. In the printing process, alkali agents and urea added into the printing paste can be omitted, roll alkali treatment and steaming fixation are performed after printing and drying, urea is omitted in the process, ammonia nitrogen emissioncan be greatly reduced, and sewage discharge can reach standards. Besides, dye hydrolysis can be reduced, the stability of the color paste is prolonged, steaming time is shortened, steaming efficiencyis improved, and product production cost is reduced.

Description

technical field [0001] The invention relates to a reactive dye printing process. Background technique [0002] Reactive dyes are the main dyes for cellulose fiber dyeing and printing. When used for printing, they have the characteristics of bright colors, good hand feeling and simple process, and are widely used. Reactive dyes are a class of dyes that can react covalently with cellulose fibers, and the process of their mutual reaction requires certain alkaline conditions and temperature and humidity. [0003] The conventional printing process is as follows: white gray cloth-printing-drying (100°C)-steaming (102°C*8min)-washing-soaping-washing. In the conventional printing process, during the printing operation, the printing color paste contains alkali agent (about 3% dosage) and urea (about 10% dosage), the presence of alkali agent will accelerate the hydrolysis of the dye, which is not conducive to the long-term storage of the color paste , especially under the condition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P5/10
CPCD06P1/38D06P5/10
Inventor 蔡连杰曹文斌李爽
Owner SHANGHAI ANOKY GRP
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