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Acidic color fixing agent and preparation method and application method thereof

An acidic color fixing agent and solvent technology, which is applied in the field of printing and dyeing auxiliaries, can solve the problems of fabrics that are easy to form color spots, color changes, and not resistant to concentrated acids, so as to avoid color spots, reduce color change, and improve The effect of color fastness

Active Publication Date: 2020-01-14
苏州联胜化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the use of the current synthetic tannin color fixing agent, there are disadvantages such as large color change, no resistance to concentrated acid, and easy to form color fixing spots on the fabric. Therefore, it is of great practical significance to study a new type of acidic color fixing agent.

Method used

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  • Acidic color fixing agent and preparation method and application method thereof

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preparation example Construction

[0026] The present invention also provides a preparation method for preparing the acidic color fixing agent involved in the present invention, which includes the following steps: adding resin, glacial acetic acid, solvent and active body to the reaction vessel to obtain the first mixed solution; stirring For the first mixed solution, heat the reaction vessel until the temperature of the first mixed solution reaches 95-102°C, and keep it warm for 30-45 minutes until the resin is fully dissolved to obtain the second mixed solution; the reaction vessel The temperature of the second mixed liquid in the mixture was lowered to 70°C, and a sulfonating agent was added dropwise to the reaction vessel to keep the reaction temperature lower than 80°C; after the dropwise addition of the sulfonating agent, the temperature was kept at 75 ℃-80℃, heat preservation reaction for 4-6 hours to obtain the third mixed solution; cool the third mixed solution to 45-55℃, add deionized water, continue s...

Embodiment 1

[0034]A preparation method provided by this embodiment is used to prepare the acidic color fixing agent involved in the present invention, in parts by weight, comprising the following steps: adding 45 parts of resin, 30 parts of glacial acetic acid, and 5 parts of fatty alcohol into the reaction vessel Polyoxyethylene ether sulfate and 10 parts of tripropylene glycol to obtain the first mixed solution; stir the first mixed solution, heat the reaction vessel with steam until the temperature of the first mixed solution reaches 95-102°C, and keep warm for the reaction 30-45 minutes, until the resin is fully dissolved to obtain the second mixed solution; the second mixed solution in the reaction vessel is cooled to 70°C, and 15 parts of concentrated sulfuric acid is added dropwise to the reaction vessel, keeping The reaction temperature is lower than 80°C. When the reaction temperature exceeds 80°C, cool down with circulating cooling water in time, and the time for dropping the con...

Embodiment 2

[0037] A preparation method provided by this embodiment is used to prepare the acidic color fixing agent involved in the present invention, in parts by weight, comprising the following steps: adding 42 parts of resin, 35 parts of glacial acetic acid, and 6 parts of cardanol into the reaction vessel Polyoxyethylene ether and 12 parts of diethylene glycol to obtain the first mixed solution; stir the first mixed solution, heat the reaction vessel with steam until the temperature of the first mixed solution reaches 95-102°C, and keep warm for the reaction 30-45 minutes, until the resin is fully dissolved to obtain the second mixed solution; the second mixed solution in the reaction vessel is cooled to 70°C, and 16 parts of concentrated sulfuric acid is added dropwise to the reaction vessel, keeping The reaction temperature is lower than 80°C. When the reaction temperature exceeds 80°C, cool down with circulating cooling water in time, and the time for dropping the concentrated sulf...

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Abstract

The invention relates to an acidic color fixing agent and a preparation method and application method thereof, wherein the acidic color fixing agent is prepared from, by mass, 40-50% of resin, 20-40%of glacial acetic acid, 2-8% of an activator, 5-20% of a solvent, 8-20% of a sulfonating agent, 10-30% of deionized water, and 3-5% of a stabilizer, wherein the acidic color fixing agent has the advantages that a color fixing working liquid is stable, agglomeration particles are avoided, the generation of color fixing spots in the color fixing process of a fabric can be avoided, the color change of the fabric after color fixing is reduced, and the color fastness to washing, the color fastness to perspiration and the like are improved.

Description

technical field [0001] The invention relates to a printing and dyeing auxiliary agent, in particular to an acidic color fixing agent and its preparation method and application method. Background technique [0002] In textile printing and dyeing, nylon (nylon), silk, wool and their blended fabrics are generally dyed with acid dyes. Acid dyes have complete color spectrum, bright colors and high dyeing rate, and are often used for dyeing nylon and protein fibers. Due to the small molecular weight of acid dyes, dyeing fibers with acid dyes needs to rely on the combination of ionic bonds between dye molecules and the effects of partial hydrogen bonds and van der Waals forces. Due to the presence of water-soluble groups such as carboxylic acid groups or sulfonic acid groups in the molecular structure of acid dyes, the wet fastness of dyed fabrics is poor. Therefore, in order to improve the fastness after dyeing with acid dyes, especially the fastness of medium and dark varieties,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/08D06P5/02D06P5/06D06P5/04D06P1/39
CPCD06P5/08D06P5/02D06P5/06D06P5/04D06P1/39
Inventor 陈新华
Owner 苏州联胜化学有限公司
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