A kind of anti-white paste for reactive dye physical resist printing and preparation method thereof

A reactive dye and physical technology, applied in the field of textile printing and dyeing, can solve the problems of poor anti-printing effect, large anti-printing limitations, and the dosage cannot be too high, and achieve the effect of increasing stability, improving softness and soft texture

Active Publication Date: 2020-04-14
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because the acid will damage the natural fiber, the amount of organic acid should not be too high. At the same time, the reactive dye can be absorbed by the fiber, even if it does not react with the fiber, it will have a certain dyeing effect, which makes this method easy to cause anti-printing dirt and affect the quality of printing. accuracy
Sodium sulfite is currently a commonly used chemical auxiliary for offset printing. Sodium sulfite can react with vinyl sulfone active groups first, and its reaction rate is faster than the reaction between fibers and vinyl sulfone active groups, so that it can no longer be combined with fibers, but its The anti-printing effect is relatively large, and it mainly has anti-printing effect on reactive dyes with vinyl sulfone reactive groups, and there is also the defect that the anti-printing effect on Cui Lan in vinyl sulfone reactive dyes is poor
At the same time, chemical reagent printing reactive dyes will also appear the phenomenon of edge halo
In addition to the above problems, the resist paste prepared with organic acid and sodium sulfite cannot be stored for a long time in the production environment, it is easy to decompose and fail, and it also causes great pollution to the environment

Method used

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  • A kind of anti-white paste for reactive dye physical resist printing and preparation method thereof
  • A kind of anti-white paste for reactive dye physical resist printing and preparation method thereof
  • A kind of anti-white paste for reactive dye physical resist printing and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Preparation of silicone-modified acrylate derivative adhesive: add 20g of butyl acrylate, 2g of methyl methacrylate, 2g of methacrylic acid mixed monomer and 0.5g of silicone coupling agent KH570 into the reactor, Add 0.1g of ammonium persulfate initiator, start the agitator, heat up to 60°C, and keep warm for 30min; then add 0.1g of ammonium persulfate initiator, keep the reaction temperature at 60°C; heat up to 75°C, and react at constant temperature for 60min; after the reaction, After cooling down to room temperature, adjust the pH of the emulsion to 8.0 with ammonia water, then stop stirring, discharge, and store for future use.

[0027] From the comparative analysis of infrared spectra of acrylate derivatives and silicone-modified acrylate derivatives, see figure 1 ; It can be seen that the newly-appeared 943cm in the modified infrared spectrum -1 Si-CH 3 The characteristic absorption peak of 1169cm -1 It is the characteristic absorption peak of Si-O-Si bond, a...

Embodiment 2

[0032] Ag / Bi Added to Silicone-Modified Acrylate Derivatives with Photosensitive Properties 2 o 3 Preparation of photocatalyst: weigh 1.5gAgNO 3 Put into 30mL deionized water, stir to dissolve, then add 2.8gNaBiO 3 Stir to mix evenly, add the prepared reaction solution into a hydrothermal reaction kettle with a polytetrafluoroethylene lining, put the reaction kettle into a blast drying oven, and react at 150°C for 5 hours; after the reaction is completed, take it out naturally Cool to room temperature, suction filter the obtained suspension, wash twice with 20mL deionized water and 20mL absolute ethanol, and dry at 100°C for 5h to obtain the precursor; put the precursor in a mortar and grind repeatedly Place the ark in a 30mm×60mm ark, put it into a muffle furnace, and calcinate it at 500°C for 4 hours. After the reaction is over, cool it down to room temperature naturally to get Ag / Bi 2 o 3 , save for later use.

[0033] Ag / Bi 2 o 3 XRD patterns of photocatalysts, see ...

Embodiment 3

[0037] The preparation method of the anti-white paste of physical anti-printing reactive dyes comprises the following steps.

[0038] Step 1. Preparation of citric acid-sodium trichloroacetate aqueous solution: add 1 g of citric acid and 3 g of sodium trichloroacetate to 50 g of deionized water, adjust the pH to 6.5, and set aside.

[0039] Step 2, the processing of acid printing paste: the citric acid-sodium trichloroacetate aqueous solution of step 1 is placed in the beaker and is heated to 65 ℃; With 4.4g sodium alginate, 0.4g chitosan, 0.2g glacial acetic acid (mass The ratio is 22:2:1) and 0.5g fatty alcohol polyoxyethylene ether, then add it into the citric acid-sodium trichloroacetate aqueous solution three times on average, keep stirring at 65°C for 20-30min, and it becomes a translucent paste (viscosity 30000Pa.s), save it for future use.

[0040] Step 3, preparation of photosensitive silicone-modified acrylate derivative adhesive: add 20g of butyl acrylate, 2g of me...

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Abstract

The invention belongs to the technical field of textile printing and dyeing, and in particular relates to an anti-white pulp used for physical anti-printing of reactive dyes and a preparation method thereof. The raw materials of anti-white paste for physical anti-printing reactive dyes are composed as follows in terms of mass percentage: 1-3% citric acid, 2-4% sodium trichloroacetate, 3.5-5% thickening powder, photosensitive silicone modified acrylate 20-23% of derivative-like binder, 14-27% of covering agent, and deionized water as the balance. The invention obtains anti-print printing effect through physical shielding effect, utilizes organic silicon-modified acrylic adhesive that can form film rapidly at low temperature and has no adsorption effect on reactive dyes, and has the ability to prevent the diffusion of reactive dyes and greatly Mix zinc white powder to dilute and cover the color of reactive dyes, add acid printing paste to thicken.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to an anti-white pulp used for physical anti-printing of reactive dyes and a preparation method thereof. Background technique [0002] Reactive dye anti-printing is an important technical means to enrich product types in the printing field and obtain various styles and patterns. The anti-printing of reactive dyes realizes the printing of fine flower-shaped outlines, which plays an important role in the visual perception and style diversity of printing. [0003] At present, the anti-printing of reactive dyes mainly uses organic acids and sodium sulfite as anti-printing agents, and achieves the anti-printing effect through chemical methods. Reactive dyes can only react with fibers to form strong chemical bonds under alkaline conditions (pH=8~11). Commonly used organic acids, such as citric acid, tartaric acid and other weakly acidic substances, destroy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52D06P1/653D06P1/48D06P1/673D06P1/38D06P5/12C08F220/18C08F220/14C08F220/06C08F230/08
CPCC08F220/18C08F220/1804D06P1/38D06P1/48D06P1/5257D06P1/6533D06P1/673D06P5/12C08F220/14C08F220/06C08F230/08
Inventor 徐舸许延恒许思文白瑶徐雪妍关璐周佳琦
Owner SHENYANG POLYTECHNIC UNIV
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