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Acid dye leveling agent

A technology of acid dyes and leveling agents, applied in dyeing, textile and papermaking, etc., can solve the problems of poor biodegradable surfactants, human harmfulness, environmental impact, etc., and achieve environmental protection and biocompatibility. Good performance and easy biodegradation

Active Publication Date: 2015-09-02
江苏正大易方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a large amount of petroleum-based surfactants are used as leveling agents when dyeing various dyes, while obtaining the leveling effect, a large amount of surfactants with poor biodegradability remain in the printing and dyeing wastewater, giving The treatment of printing and dyeing wastewater brings difficulties, which in turn will cause environmental impact
In addition, leveling agents such as leveling agent OP and other alkylphenol polyoxyethylene ethers are considered to be environmental hormones, and there is a risk of harm to humans.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] For the acid dye dyeing leveling agent 1 formula, the composition is as follows in parts by weight:

[0030]

[0031] The N-fatty acylated-O-hydroxypropyl chitosan structure used is as follows:

[0032]

[0033] Wherein: x=200 (polymerization is the mixture of 100~300); y=8

[0034] The N-fatty acylated chitosan oligosaccharide structure used is as follows:

[0035]

[0036] Wherein: m=5 (the mixture that degree of polymerization is 2~10); n=10

[0037] The cardanol polyoxyethylene ether structure used is as follows:

[0038]

[0039] Where: q is 15.

[0040] The N-fatty acylation-O-hydroxypropyl chitosan used in the present embodiment can be prepared by the following method: at first take chitosan as raw material, take isopropanol as solvent, tetramethylammonium hydroxide as catalyst, alkali O-hydroxypropyl chitosan was prepared by reacting with 1,2-propylene oxide under neutral conditions. Then use O-hydroxypropyl chitosan as a raw material, use a vol...

Embodiment 2

[0044] Acid dye dyeing leveling agent 2 formula is composed as follows in parts by weight:

[0045]

[0046] The N-fatty acylated-O-hydroxypropyl chitosan structure used is as follows:

[0047]

[0048] Wherein: x=200 (polymerization is the mixture of 100~300); y=6

[0049] The N-fatty acylated chitosan oligosaccharide structure used is as follows:

[0050]

[0051] Wherein: m=5 (the mixture that the degree of polymerization is 2~10); n=8

[0052] The cardanol polyoxyethylene ether structure used is as follows:

[0053]

[0054] Where: q is 20.

[0055]The acid dye leveling agent of the present invention is used in the acid dyeing process of real silk fabrics, and is compared with the leveling agent OP. The dyeing process conditions are: Weak acid Brilliant Blue G 2% (o.w.f.), the pH of the dye solution is 4.5, the leveling agent is 1g / L, the bath ratio is 50:1, the dyeing is done at 40°C, and the temperature is raised to 90°C at 2°C / min , keep warm for 60min....

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Abstract

The invention discloses an acid dye leveling agent. The acid dye leveling agent contains the ingredients in percentage by mass: 5-20% of N-fat acylated-O-hydroxypropyl chitosan, 10-25% of N-fat acylated chitosan oligosaccharide, 5-15% of nonionic surfactant cardanol polyoxyethylene ether and the balance of water. According to the acid dye leveling agent, a compounding technology is adopted, so that the leveling effect of the product is optimized, the application effect reaches the effect of the conventional leveling agents prepared from petroleum-based surfactants, and the acid dye leveling agent can replace petroleum-based products.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing processing and fine chemical industry, and more specifically, the invention relates to an acid dye leveling agent. Background technique [0002] During the exhaust dyeing process, there will be uneven dyeing phenomena such as color difference, color flower, and dyeing spots. In order to achieve the uniformity of dyeing, it is necessary to ensure that the fibers and their fabrics have uniform adsorption properties. The fibers can be removed through sufficient pretreatment. , impurities on the surface of the fabric; secondly, it is required to have good contact between the fabric and the dye solution, so that the dye solution can be fully spread on its surface, and the considerable movement between the fabric and the dye solution can be increased by adding a wetting agent Wait for it to come true. In addition, a special leveling agent is generally added to the dye bath to achiev...

Claims

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Application Information

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IPC IPC(8): D06P1/48D06P1/613D06P1/39D06P3/06C08B37/08
Inventor 王祥荣殷珉扬
Owner 江苏正大易方科技有限公司
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