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Formaldehyde-free color fixing agent and preparation method thereof

A color-fixing agent and formaldehyde technology, applied in the field of textile printing and dyeing, can solve the problems of unsatisfactory color-fixing effect of formaldehyde-free color-fixing agent, and achieve the effects of excellent color-fixing effect, environmental friendliness and improved color fastness.

Active Publication Date: 2014-08-06
深圳天鼎新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a formaldehyde-free color-fixing agent and a preparation method thereof, aiming at solving the problem that the color-fixing effect of the formaldehyde-free color-fixing agent used for fabric dyeing is not ideal

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] After heating maleic anhydride to 60~70°C to melt, add olefin with quaternary ammonium salt, unsaturated carboxylic acid, catalyst oxalic acid and water to the molten maleic anhydride, and mix maleic anhydride, unsaturated carboxylic acid The molar ratio of the content of acid and catalyst oxalic acid to the content of olefin with quaternary ammonium salt is 1:1:0.8:2, when the temperature rises to 75~85°C, it starts to add dropwise, accounting for 12% by weight of the total material. The concentration is 10% Hydrogen peroxide aqueous solution was used as an initiator, and the temperature was controlled at 80-85°C. After the dropwise addition, the temperature was kept for 7 hours to complete the addition reaction. The addition reaction product is cooled to room temperature, and the formaldehyde-free color fixing agent can be obtained.

Embodiment 2

[0028] After heating maleic anhydride to 60~70°C to melt, add olefin with quaternary ammonium salt, sulfuric acid, catalyst metal sodium salt and water to the molten maleic anhydride, among which maleic anhydride, sulfuric acid, The molar ratio of the catalyst metal sodium salt content to the quaternary ammonium salt olefin content is 1:1:0.8:2, when the temperature rises to 75~85°C, it starts to add 2% of the total amount of the material and the concentration is 10%. Hydrogen oxide aqueous solution is used as an initiator, and the temperature is controlled at 80-85°C. After the dropwise addition is completed, it is kept for 1 hour to complete the addition reaction. The addition reaction product is cooled to room temperature, and the formaldehyde-free color fixing agent can be obtained.

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Abstract

The invention discloses a formaldehyde-free color fixing agent and a preparation method thereof. The method comprises the following steps: heating maleic anhydride until the maleic anhydride is melted, and adding cationic monomers, an unsaturated organic acid, a catalyst and water into the molten liquid so as to obtain a mixed liquid; dropwise adding an initiator into the mixed liquid, so that the mixed liquid has an addition reaction; and carrying out cooling treatment on the obtained product so as to obtain an cationic formaldehyde-free color fixing agent. According to the invention, the solubility of water-soluble dyes is reduced by introducing the cationic monomers, and the fixation fastness of the color fixing agent on the surface of fibers is improved by using the esterification crosslinking capacity and macromolecular surface film forming capacity of polymer and cellulose fiber molecules, thereby improving the color fastness of water-soluble dyes. According to the invention, defects in existing formaldehyde-free color fixing agent technologies are overcome, and a formaldehyde-free and environment-friendly color fixing agent with a good color fixing effect is obtained.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a formaldehyde-free color fixing agent and a preparation method thereof. Background technique [0002] The current fabric dyeing is mainly dyed with reactive dyes, but because the dye contains hydrophilic groups and the particle size of the dye can affect the soaping fastness of the dyeing, resulting in unqualified wet fastness. A fixative must be used to fix the color. Most of the color fixing agents used in the past contain formaldehyde. With the current restrictions on formaldehyde, formaldehyde color fixing agents have been eliminated. In recent years, formaldehyde-free color fixing agents are often reported in some patents, but the formula is single and the color fixing effect is not ideal. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above-mentioned deficien...

Claims

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Application Information

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IPC IPC(8): C08F226/02C08F222/06D06P5/08
Inventor 王敏哲张书立苏勇宋建芳
Owner 深圳天鼎新材料有限公司
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