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Formaldehyde-free color fixing agent for acid dyes and preparation method thereof

A formaldehyde-free color-fixing agent and acid dye technology, applied in dyeing, textiles and papermaking, etc., can solve problems such as poor wet rubbing fastness and washing fastness, influence of fabric shade and hand feeling, complex synthesis equipment and process, etc. , to achieve the effect of improving dry and wet fastness, improving dry rubbing fastness, and no formaldehyde pollution

Inactive Publication Date: 2018-12-28
曾文华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acid dyes are bright in color and complete in color spectrum. They are mainly used for dyeing wool, woolen wool, silk and nylon fabrics, but the wet rubbing fastness and washing fastness after dyeing are often poor.
At present, one of the main methods to improve the color fastness of acid dyes is to use color-fixing agents, but there are relatively few special-purpose acid dye color-fixing agents for silk. The improvement is not obvious or it will affect the shade and feel of the fabric

Method used

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  • Formaldehyde-free color fixing agent for acid dyes and preparation method thereof
  • Formaldehyde-free color fixing agent for acid dyes and preparation method thereof
  • Formaldehyde-free color fixing agent for acid dyes and preparation method thereof

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preparation example Construction

[0026] A kind of preparation method of the aldehyde-free color-fixing agent for acid dyes of the present invention is realized through the following steps:

[0027] (1) Add hydroxypropyltrimethylammonium chloride chitosan, acrylate containing amino structure, unsaturated carboxylate monomer, desalted water into the stirred polymerization reactor, start stirring, and start heating ;

[0028] (2) When the temperature in the stirring type polymerization reactor rises to 95 ℃ ~ 130 ℃, start dropping the initiator solution whose mass concentration is 1 ~ 10%. It is prepared from salt water, and the dropping time is controlled within 3 to 6 hours;

[0029] (3) After the dropwise addition, keep the temperature and continue the reaction for 1 to 3 hours, then cool down and discharge the material to obtain the color fixing agent.

Embodiment 1

[0032] A kind of formaldehyde-free color-fixing agent for acid dyes of the present invention is made of the following raw material components in proportions by mass:

[0033]

[0034] A kind of preparation method of the aldehyde-free color-fixing agent for acid dyes of the present invention is realized through the following steps:

[0035] (1) Add 23.5 parts of hydroxypropyltrimethylammonium chloride chitosan, 1.5 parts of aminoethyl acrylate, 1.2 parts of methyl acrylate, 63.8 parts of desalinated water into the stirred polymerization reactor, start stirring, and start heating heat up;

[0036] (2) When the temperature in the stirring type polymerization reactor rose to 97 DEG C, it was 9.3% ammonium persulfate solution that began to drop the mass concentration, and this ammonium persulfate solution was prepared by 0.93 parts of ammonium persulfate and 9.07 parts of demineralized water into, the dropping time is controlled at 3.3 hours;

[0037] (3) After the dropwise ad...

Embodiment 2

[0039] A kind of formaldehyde-free color-fixing agent for acid dyes of the present invention is made of the following raw material components in proportions by mass:

[0040]

[0041] A kind of preparation method of the aldehyde-free color-fixing agent for acid dyes of the present invention is realized through the following steps:

[0042] (1) Add 25 parts of hydroxypropyltrimethylammonium chloride chitosan, 3 parts of aminopropyl acrylate, 3.1 parts of ethyl acrylate, and 58.9 parts of desalinated water into the stirred polymerization reactor, start stirring, and start heating heat up;

[0043] (2) When the temperature in the stirring type polymerization reactor rose to 103 DEG C, it was 3.3% ammonium persulfate solution to start dripping mass concentration, and this ammonium persulfate solution was prepared by 0.33 parts of ammonium persulfate and 9.67 parts of demineralized water into, the dropping time is controlled at 5 hours;

[0044] (3) After the dropwise addition...

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Abstract

The invention relates to a formaldehyde-free color fixing agent for acid dyes and a preparation method thereof. The preparation method includes step (1) of adding hydroxypropyl trimethyl ammonium chloride chitosan, acrylic ester containing an amino structure, unsaturated carboxylate-based monomer and demineralized water into a stirring polymerization reactor, starting to stir, and beginning to heat; step (2) of starting to add an initiator solution with a mass concentration of 1-10% when the temperature of the stirring polymerization reactor rises to 95-130 DEG C, wherein the initiator solution is prepared from an initiator and part of the demineralized water, and the time for adding dropwise is 3-6 h; (3) maintaining the temperature after the adding performed dropwise to continue the reaction for 1-3 h, and performing cooling and discharging to obtain the color fixing agent.

Description

Technical field [0001] The invention belongs to the field of textile dyeing and finishing auxiliaries, and particularly relates to an aldehyde-free fixative for acid dyes and a preparation method thereof. Background technique [0002] Acid dyes have bright colors and complete chromatograms and are mainly used for dyeing wool, woolen, silk, nylon and other fabrics. However, the wet rubbing fastness and washing fastness after dyeing are often poor. At present, one of the main methods to improve the color fastness of acid dyes is to use fixing agents, but there are relatively few dedicated acid dye fixing agents for silk. Some of these fixing agents have complex synthesis equipment and processes, and some have poor color fastness. The improvement is not obvious or may have an impact on the fabric's color and feel. Therefore, research on new and efficient acid dye fixing agents that are ecologically friendly and formaldehyde-free has broad market application prospects. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/34C08F220/18D06P5/08D06P1/39
CPCD06P1/39D06P5/08C08F251/00C08F220/18C08F220/1802C08F220/34C08F220/1804
Inventor 曾文华
Owner 曾文华
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