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Preparation method of textile deepening agent

A darkening agent, textile technology, applied in the field of preparation of textile darkening agent, can solve problems such as poor darkening effect, reduce fabric color fastness, etc., achieve improved darkening efficiency, excellent color fixing effect, and improve stable dispersion Effect

Inactive Publication Date: 2018-09-14
田秋珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the color fastness of the fabric will be reduced and the darkening effect is poor after the darkening agent is used to darken the fabric at present, a preparation method of the textile darkening agent is provided

Method used

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  • Preparation method of textile deepening agent

Examples

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preparation example Construction

[0015] A preparation method of a textile darkening agent, comprising the steps of:

[0016] (1) Take 1,3-propanediol and add adipic acid in a mass ratio of 13:10 to mix, stir and mix at 50~55°C for 30~40min, then add p-toluenesulfonic acid with 0.8~1.2% adipic acid mass, and heat up to Stir and mix at 100~105°C for 1~2h, then keep warm at -0.1MPa, 120~130°C for 2~3h to obtain a stirred mixture, take the stirred mixture and add chloroform and distilled water in a mass ratio of 1:5:5, mix and let stand 3~4h, take off the lower layer liquid and distill under reduced pressure, dry to obtain the dried product;

[0017] (2) Take the dry matter and add isophorone diisocyanate according to the mass ratio of 15~18:9~12, stir and mix at 45~50°C for 40~50min, then add dibutyltin dilaurate with a dry matter mass of 0.04~0.07% , stir and mix at 45~50°C for 15~20min, then raise the temperature to 65~70°C and keep it warm for 2~3h to obtain the mixture. Take the mixture and add 2,2-dimethyl...

Embodiment 1

[0022] A preparation method of a textile darkening agent, comprising the steps of:

[0023] (1) Take 1,3-propanediol and add adipic acid in a mass ratio of 13:10 to mix, stir and mix at 50°C for 30 minutes, then add p-toluenesulfonic acid with 0.8% adipic acid mass, heat up to 100°C, stir and mix for 1 hour, Then keep it at -0.1MPa and 120°C for 2 hours to obtain a stirred mixture. Take the stirred mixture and add chloroform and distilled water in a mass ratio of 1:5:5 to mix, let it stand for 3 hours, take the lower layer liquid and distill it under reduced pressure, and dry it to obtain a dry product. ;

[0024] (2) Take the dry matter and add isophorone diisocyanate at a mass ratio of 15:9, stir and mix at 45°C for 40 minutes, then add dibutyltin dilaurate with a dry matter mass of 0.04%, stir and mix at 45°C for 15 minutes, and then heat up Incubate at 65°C for 2 hours to obtain a mixture. Take the mixture and add 2,2-dimethylolpropionic acid at a mass ratio of 20:1, and ...

Embodiment 2

[0029] A preparation method of a textile darkening agent, comprising the steps of:

[0030] (1) Take 1,3-propanediol and add adipic acid in a mass ratio of 13:10 to mix, stir and mix at 55°C for 40 minutes, then add p-toluenesulfonic acid with 1.2% adipic acid mass, heat up to 105°C, stir and mix for 2 hours, Then keep it at -0.1MPa and 130°C for 3 hours to obtain a stirred mixture. Take the stirred mixture and add chloroform and distilled water in a mass ratio of 1:5:5 to mix, let it stand for 4 hours, take the lower layer liquid and distill it under reduced pressure, and dry it to obtain a dry product. ;

[0031] (2) Take the dry matter and add isophorone diisocyanate at a mass ratio of 18:12, stir and mix at 50°C for 50 minutes, then add dibutyltin dilaurate with a dry matter mass of 0.07%, stir and mix at 50°C for 20 minutes, and then heat up Incubate at 70°C for 3 hours to obtain a mixture. Take the mixture and add 2,2-dimethylolpropionic acid at a mass ratio of 20:1, an...

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Abstract

The invention discloses a preparation method of a textile deepening agent, and belongs to the field of chemical engineering. 1,3-propanediol extracted from plant straw is used as raw materials; a dihydric alcohol type substance is obtained through preparation; then, polyurethane type emulsion prepared by using isophorone diisocyanate as raw materials is added; the dihydric alcohol type substance is used for modifying the emulsion; the textile deepening agent consists of a soft chain segment and a hard chain segment; ionic hydrophilic groups are contained on the molecular chain and can be dissolved or dispersed in water; the hard chain segment is prepared from isocyanate and a chain extender; the soft chain segment is prepared from polyalcohol and polyether polyol; the specific isocyanate group (-NCO) has high unsaturation degree, is very lively and can react with many compounds such as alcohol, acid, amino and water. The problems that after the existing deepening agent is used for performing deepening treatment on the textile, the color fastness of the textile can be reduced, and the deepening effect is poor are solved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a preparation method of a textile darkening agent. Background technique [0002] When natural fibers (such as silk) are dyed into dark colors, reactive dyes are often used to improve color fastness. In order to increase the color depth, it is generally achieved by increasing the concentration of the dye. However, the deepness of reactive dyeing is poor, and even when the amount of dye is as high as 6% (based on cloth weight), the color depth of the fabric still cannot meet the requirements, and thus the color fastness of dark fabrics is not up to standard, and the amount of dye is too large. Waste and increased burden on sewage treatment and many other issues. Fabric darkening refers to a finishing method that realizes the darkening of fabrics without adding dyes. It not only saves dyes and reduces production costs, but also reduces the content of colored substances...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/572D06M15/53D06M15/356C08F292/00C08F220/18C08F218/08C08F220/56C08G18/75C08G18/42C08G65/26
CPCC08F292/00C08G18/4238C08G18/755C08G65/2624D06M15/3568D06M15/53D06M15/572C08F220/56
Inventor 田秋珍庄文琴刘红妹
Owner 田秋珍
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