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Preparation method of organic silicon defoaming agent used for textile printing and dyeing

A silicone defoamer, textile printing and dyeing technology, applied in the field of emulsification technology, can solve the problems of large amount of stabilizer, poor applicability, poor defoaming performance, etc., and achieve excellent defoaming performance and excellent stability

Active Publication Date: 2014-02-26
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyether-modified polysiloxane can improve the compatibility of silicone defoamers in textile printing and dyeing systems, but it still cannot solve the problem that siloxane is easy to break in strong acid-base systems. It is suitable for strong alkali systems poor sex
Patent CN103074784 provides a method of using starch as a stabilizer to improve the acid and alkali resistance of the emulsion, but due to the large amount of stabilizer used, the defoaming performance is deteriorated

Method used

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  • Preparation method of organic silicon defoaming agent used for textile printing and dyeing
  • Preparation method of organic silicon defoaming agent used for textile printing and dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Mix 20g of silicone composition, 5g of D420 and 0.0015g of dibutyltin dilaurate evenly, raise the temperature to 160°C, and stir at 1000rpm for high-speed dispersion for 1.5h; adjust the speed of the agitator to 250rpm, turn off the heating, and cool down to 80°C. Mixture G1 is obtained. Add 2g of S113, 2.5g of Span-80, and 2.5g of Tween-80 into 20g of water, raise the temperature to 80°C, stir and mix for 15min to obtain mixture H1. Then slowly add mixture H1 to mixture G1, keep stirring, and emulsify at 80°C for 0.5h; then homogenize the above mixture through a colloid mill, and finally dilute with 3g polyacrylate thickener and 40g water to obtain silicone defoamer.

Embodiment 2

[0040] Mix 18g of silicone composition, 9g of D903 and 0.003g of stannous octoate evenly, raise the temperature to 140°C, stir at 1200rpm for high-speed dispersion for 1h; adjust the speed of the stirrer to 300rpm, turn off the heating, and cool down to 75°C to obtain the mixture G2 . Add 6g of S82, 5g of Span-85, and 5g of A-105 into 25g of water, raise the temperature to 75°C, stir and mix for 15min to obtain mixture H2. Then slowly add mixture H2 to mixture G2, keep stirring, and emulsify at 75°C for 1 hour; then homogenize the above mixture through a colloid mill, and finally dilute it with 2g of polyacrylate thickener and 30g of water to obtain a silicone paste foaming agent.

Embodiment 3

[0042] Mix 19g of silicone composition, 9g of D903 and 0.014g of dibutyltin diacetate evenly, raise the temperature to 120°C, stir at 1500rpm for high-speed dispersion for 1h; adjust the speed of the stirrer to 280rpm, turn off the heating, and cool down to 70°C to obtain a mixture G3. Add 6g of S610 and 1g of OP-10 into 30g of water, raise the temperature to 70°C, stir and mix for 15min to obtain mixture H3. Then slowly add mixture H3 to mixture G3, keep stirring, and emulsify at 70°C for 2 hours; then homogenize the above mixture through a colloid mill, and finally dilute with 0.1g polyacrylate thickener and 34.9g water to obtain organic Silicon defoamer.

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Abstract

The invention relates to a preparation method of an organic silicon defoaming agent used for textile printing and dyeing. By adding a catalyst, an organic silicon composition and polyether modified polysiloxane react under high temperature and strong shearing conditions, and the obtained organic silicon defoaming agent has excellent stability in strong acid-base systems, and also maintains excellent antifoaming and foam-suppresssing performance at the same time.

Description

technical field [0001] The invention relates to an emulsification process, which makes the organosilicon defoamer more stable under strong acid and alkali conditions. The invention relates to the preparation of a defoamer, and therefore belongs to the technical field of fine chemical preparations. Background technique [0002] There are nearly 100 categories of textile printing and dyeing auxiliaries in the world, about 15,000 varieties, with an annual output of 2.8 million tons and a market sales of more than 16 billion US dollars. Value and competitiveness in the international market play a decisive role. In recent years, large-scale printing and dyeing auxiliaries companies in the world have changed their business strategies, and the demand for textile printing and dyeing auxiliaries in Southeast Asia has grown rapidly. However, the strong manufacturers of textile printing and dyeing auxiliaries are still concentrated in Europe and Japan. my country's printing and dyein...

Claims

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Application Information

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IPC IPC(8): D06P1/613C08G77/46
Inventor 门全朱智吴飞曹添黄伟
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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