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Reserving agent for washing jean garments and preparation method thereof

A technology of anti-dyeing agent and clothing, applied in the field of washing anti-dyeing agent, can solve the problems of protein inactivation, destroying protein structure, reducing anti-dyeing effect of anti-dyeing agent, etc., and achieves simple production process, excellent anti-back-staining, good The effects of production prospects and market application prospects

Inactive Publication Date: 2013-09-18
东莞市广利行洗涤原料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the method to solve the back dyeing problem of denim is to add a suitable anti-staining agent in the treatment solution. The existing anti-staining agents are mainly divided into anionic surfactants and cationic surfactants, anionic surfactants and cationic surfactants. Type surfactants can form complexes with proteins and destroy the structure of proteins, inactivate proteins (cellulase), greatly reducing the anti-backstaining effect of anti-staining agents

Method used

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  • Reserving agent for washing jean garments and preparation method thereof
  • Reserving agent for washing jean garments and preparation method thereof
  • Reserving agent for washing jean garments and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A kind of anti-dyeing agent of denim garment washing, its preparation method is as follows:

[0044] (1) Preparation of polyether dicarboxylic acid A1:

[0045] In a reaction kettle at a temperature of 80° C., 2 L of xylene was added, 2.18 kg of pyromellitic anhydride and 10 kg of polyethylene glycol monomethyl ether with a number average molecular weight of 500 were added to the reaction kettle, and stirred and mixed evenly. Then react at a constant temperature at 100° C. for 6 hours to prepare polyether dicarboxylic acid A1.

[0046] (2) Preparation of anti-dyeing agent C1:

[0047] 12.18kg of polyether dicarboxylic acid A1, 62g of ethylene glycol, and 1.3g of diethyl sulfate were subjected to esterification reaction at a constant temperature of 100°C for 60 minutes, and then the temperature was raised to 180°C for 5 hours of esterification reaction. Reached 17.5g, the reaction ended. Then carry out vacuum distillation at this temperature for 1 hour to completely r...

Embodiment 2

[0050] A kind of anti-dyeing agent of denim garment washing, its preparation method is as follows:

[0051] (1) Preparation of polyether dicarboxylic acid A2:

[0052] In a reaction kettle at a temperature of 85°C, add 2.5 L of xylene, 2.18 kg of pyromellitic anhydride and 20 kg of polyethylene glycol monomethyl ether with a number average molecular weight of 1000 into the reaction kettle, stir and mix evenly. Then react at a constant temperature at 100° C. for 5.5 hours to prepare polyether dicarboxylic acid A2.

[0053] (2) Preparation of resist C2:

[0054] 22.18kg of polyether dicarboxylic acid A2, 62g of ethylene glycol, and 2.3g of p-toluenesulfonic acid were subjected to esterification reaction at a constant temperature of 100°C for 50 minutes, and then the temperature was raised to 170°C for 4 hours of esterification reaction. Reached 17.2g, the reaction ended. Then carry out vacuum distillation at this temperature for 2.5 hours to completely remove xylene from the ...

Embodiment 3

[0057] A kind of anti-dyeing agent of denim garment washing, its preparation method is as follows:

[0058] (1) Preparation of polyether dicarboxylic acid A3:

[0059] In a reactor at a temperature of 90° C., 3 L of xylene was added, 2.18 kg of pyromellitic anhydride and 40 kg of polyethylene glycol monomethyl ether with a number average molecular weight of 2000 were added to the reactor, and stirred and mixed evenly. Then react at a constant temperature at 100° C. for 3.5 hours to prepare polyether dicarboxylic acid A3.

[0060] (2) Preparation of resist C3:

[0061]Polyether dicarboxylic acid A3 42.18kg, ethylene glycol 62g, hydrochloric acid 5.0g for esterification reaction, constant temperature reaction at 100°C for 40 minutes, then warming up to 160°C for 2.5 hours of esterification reaction, the water output reached 16.8g , the reaction ends. Then carry out vacuum distillation at this temperature for 2.5 hours to completely remove xylene from the reaction kettle to ob...

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Abstract

The invention relates to the technical field of a reserving agent for washing, particular to the reserving agent for washing jean garments and a preparation method thereof. The reserving agent is generated by carrying out esterification reaction on polyether dicarboxylic acid and ethylene glycol serving as raw materials under the action of an acid catalyst, wherein the molar ratio of the polyether dicarboxylic acid and the ethylene glycol is 1:1; and the reserving agent is water-solubility macromolecule polyester. The reserving agent provided by the invention is a non-ionic surface active agent and is not combined with protein in the washing and fade-out treatment process of the jean garments, and therefore, the catalytic activity of the reserving agent can be remained, and the reserving effect has excellent back-staining resistant effect. The preparation method provided by the invention is simple in production process, is convenient for realizing large-scale production and has good production prospect and market application prospect.

Description

technical field [0001] The invention relates to the technical field of washing resists, in particular to a washing resist for jeans and a preparation method thereof. Background technique [0002] Denim has long been a favorite of consumers for its rugged, durable properties and naturally worn look. Especially in recent years, with people's mentality of returning to nature, denim is not only the favorite of the younger generation, but also loved by people of all ages with its unique charm. [0003] When denim is used to make denim, it is often distressed to remove some of the dyes to achieve a natural worn-in look while also giving the fabric its unique style. The old-fashioned finishing of denim fabric is to use the controllable degradation effect of cellulase on the cellulose fiber, so that part of the fiber is dissolved, and the indigo dye is also peeled off with the help of friction and rubbing of the washing equipment, so as to achieve the effect of "worn-out" . [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/12C08G63/672C08G65/48
Inventor 袁梅林张宝华崔后礼吴志忠
Owner 东莞市广利行洗涤原料有限公司