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Method for preparing emulsion type defoaming agent by utilizing polyether modified silicone oil

A technology of polyether-modified silicone oil and emulsion type defoamer, which is applied in separation methods, chemical instruments and methods, liquid degassing, etc. The effect of foaming ability and less impurities

Inactive Publication Date: 2020-07-24
五色石新材料(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem of poor use effect of the defoamer in the prior art, and provide a method for preparing an emulsion type defoamer by using polyether modified silicone oil to solve the deficiencies of the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, a method for preparing an emulsion-type defoamer by using polyether-modified silicone oil, selecting raw materials according to parts by weight: 60-80 parts of polyether-modified silicone oil, 10-15 parts of silicon dioxide, 5-5 parts of sodium carbonate 8 parts, OP-10 emulsifier 10-20 parts, fatty acid amide anionic surfactant 3-5 parts, white carbon black 2-5 parts, malonic acid 2-5 parts, SP-80 emulsifier 5-8 parts , 200-300 parts of deionized water.

[0015] Add polyether modified silicone oil, silicon dioxide, sodium carbonate, white carbon black, and malonic acid into the reaction kettle, stir evenly, then raise the temperature to 110-140°C, and at the same time stir at a speed of 20-120 rpm to react The time is 3-5 hours, then cooled to normal temperature, then add fatty acid amide anionic surfactant, stir evenly and let stand for at least 1 hour to obtain a mixture;

[0016] Heat the mixture to 60-80°C, add OP-10 emulsifier and SP-80 emulsifier, stir...

Embodiment 2

[0018] Example 2, the preparation of the polyether modified silicone oil, in the reaction kettle, put hydrogen-containing silicone oil, polyether, catalyst and nitrogen, and adjust the pressure to 150-200 Pa, heat while stirring, and raise the temperature to 105 Stir and react for 3-5 hours at -110°C; after the reaction, add acid or alkali to adjust the Ph value to neutral, then raise the temperature to 100°C to evaporate the low boilers, and then absorb polyether modified silicone oil through the column layer .

[0019] The catalyst is a mixture of trimethylsiloxysilicate, dichlorodiethylenediamine platinum and chloroplatinic acid, the mass ratio of which is 1:1-1.5:70-90; or trimethylsiloxysilicate The mixture of ester, dichlorodiethylenediamine platinum and sodium hydroxide, the mass ratio is 1:1.5-2:60-80.

Embodiment 3

[0020] Example 3: Pass hydrogen-containing silicone oil, polyether, catalyst and nitrogen into the reactor, adjust the pressure to 150-200 Pa, heat while stirring, raise the temperature to 105-110°C, and stir for 3-4 hours. After decompression, add silicon dioxide, sodium carbonate, white carbon black, and malonic acid, and stir for 3 hours to react. After cooling, add alkali to adjust the Ph value to neutral, and then raise the temperature to 100°C to distill out the low boilers, and then Cool to normal temperature and absorb through the column layer, then add fatty acid amide anionic surfactant, stir evenly and let stand for at least 1 hour to obtain the mixture;

[0021] Heat the mixture to 60-80°C, add OP-10 emulsifier and SP-80 emulsifier, stir well, react for 20-30 minutes, then add deionized water, continue stirring for 10-15 minutes, stop stirring and cool down to room temperature, After standing for 1 hour, the product was obtained.

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PUM

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Abstract

The invention discloses a method for preparing an emulsion type defoaming agent from polyether modified silicone oil. The method is as follows: adding the polyether modified silicone oil, silicon dioxide, sodium carbonate, white carbon black and malonic acid into a reaction kettle, uniformly stirring the components, heating to 110-140 DEG C, stirring at a speed of 20-120 rpm for reacting for 3-5 hours, cooling to room temperature, adding a fatty acid amide anionic surfactant, uniformly stirring, and standing for at least 1 hour to obtain a mixture; heating the mixture to 60-80 DEG C, adding anOP-10 emulsifier and an SP-80 emulsifier, uniformly stirring, reacting for 20-30 minutes, adding deionized water, continuously stirring for 10-15 minutes, stopping stirring, cooling to room temperature, and standing for 1 hour to obtain the product.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and in particular relates to a method for preparing an emulsion type defoamer by using polyether modified silicone oil. Background technique [0002] Polyether defoamer is a non-ionic surfactant with excellent defoaming and antifoaming functions. It is non-toxic, hardly soluble in water, and easily soluble in organic solvents. It can be used alone or as an emulsion. Among them, GPE type Especially suitable for use in fermentation industry, PPE is suitable for high temperature use. Polyether defoamer combines the advantages of polyether and silicone defoamers, and can defoam and suppress foam in different media. High activity, wide range of PH adaptability, low surface tension, fast spreading, etc. The product can be dissolved in water in any proportion and can withstand high-temperature sterilization. It is widely used in the defoaming treatment of antibiotics, vitami...

Claims

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Application Information

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IPC IPC(8): B01D19/04
CPCB01D19/0404B01D19/0409
Inventor 叶建文孙鹏飞
Owner 五色石新材料(杭州)有限公司
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