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Method for preparing foam killer

A defoamer and catalyst technology, which is applied in the field of defoamer preparation, can solve problems such as high viscosity, affecting the use of defoamers, and affecting defoaming performance, and achieves the effects of low cost, increased application range, and improved efficiency

Active Publication Date: 2010-09-29
威尔(福建)生物有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high viscosity of polyglycerol (especially when the degree of polymerization exceeds 6), it seriously affects the use of defoamers; in addition, because the hydrophilic groups of polyglycerol defoamers are tightly wrapped by multiple lipophilic groups, it is difficult to Diffusion in water phase, affecting defoaming performance

Method used

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  • Method for preparing foam killer
  • Method for preparing foam killer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In a pressure-resistant reactor with stirrer, thermometer, and condenser, add 184 grams of glycerin (2mol), 6.84 grams of potassium hydroxide aqueous solution (1.84 grams of potassium hydroxide), heat up to 160 ° C, and stir for 1 hour Afterwards, about 5.5 grams of water are distilled from the condenser; continue to heat up to 250 ° C, stir and react for 3 hours, then distill about 24 grams of water from the condenser to obtain polyglycerol; calculate from the amount of water distilled in the second heating reaction, At this time, the average degree of polymerization of polyglycerol is about 3.

[0018] Lower the temperature of the obtained reaction product to 120°C, add 5610 grams of propylene oxide and 2200 grams of ethylene oxide in turn to carry out ring-opening polymerization reaction, after the reaction, neutralize and decolorize to obtain polyglycerol polyoxypropylene polyoxyethylene ether , its hydroxyl value is 25mgKOH / g.

[0019] Take 500 grams of the above-...

Embodiment 2

[0021] In a pressure-resistant reactor with stirrer, thermometer, and condenser, add 184 grams of glycerin (2mol), 6.84 grams of potassium hydroxide aqueous solution (1.84 grams of potassium hydroxide), heat up to 200 ° C, and stir for 1 hour Finally, distill about 5.5 grams of water from the condenser; continue to heat up to 265 ° C, and distill about 30 grams of water from the condenser after 4 hours to obtain polyglycerol; calculate from the amount of water distilled in the second heating reaction, at this time The average degree of polymerization of polyglycerol is about 6.

[0022] The obtained reaction product was cooled to 120°C, and 2800 g of propylene oxide was added to carry out ring-opening polymerization reaction. After the reaction, it was neutralized and decolorized to obtain polyglycerol polyoxypropylene ether with a hydroxyl value of 53 mgKOH / g.

[0023] Get 500 grams of the above-mentioned polyglycerol polyoxypropylene ether, add 36.8 grams of palmitic acid, a...

Embodiment 3

[0025] In a pressure-resistant reactor with stirrer, thermometer, and condenser, add 184 grams of glycerol (2mol), 6.78 grams of potassium hydroxide aqueous solution (1.78 grams of potassium hydroxide), heat up to 180 ° C, and stir for 1.5 hours Finally, about 5.5 grams of water are distilled from the condenser; continue to heat up to 235 ° C, and after stirring for 4.5 hours, about 24 grams of water are distilled from the condenser; The average degree of polymerization is about 3.

[0026] Lower the temperature of the obtained reaction product to 120°C, add 2200 grams of ethylene oxide and 1120 grams of propylene oxide in turn to carry out ring-opening polymerization reaction, after the reaction, neutralize and decolorize to obtain polyglycerol polyoxyethylene polyoxypropylene ether , its hydroxyl value is 55mgKOH / g.

[0027] Take 500 grams of the above-mentioned polyglycerol polyoxyethylene polyoxypropylene ether, add 40.6 grams of stearic acid, add 5 grams of catalyst sulf...

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Abstract

The invention discloses a preparation method of a deformer. The method comprises the following steps: polymerizing glycerin into polyglycerol with the average polymerization degree of 2 to 15 under the effect of a catalyst; carrying out ring opening polymerizing reaction among polyglycerol, propylene oxide and epoxy ethane to get polyglycerol polyalkoxy ether; and conducting esterification reaction between polyglycerol polyalkoxy ether and C12 to C22 fatty acid to get the deformer. The preparation method is easy to operate and has low cost; and the deformer produced by using the method has excellent deforming effect and can be widely applied into use.

Description

technical field [0001] The invention relates to the field of industrial defoamers, in particular to a preparation method of the defoamer. Background technique [0002] In industrial production processes, such as food fermentation, biopharmaceuticals, papermaking, textile sizing, petrochemical, industrial cleaning, paint, latex, etc., many foams will be generated, which need to be quickly and effectively defoamed. Adding defoamers is the most commonly used method. There are many types of defoamers, such as natural oils, long-carbon chain alcohols, long-carbon chain amides, polyethers, polysiloxanes and other defoamers. [0003] Natural oil defoamers, such as vegetable oil, soybean oil, corn oil, etc. can be directly extracted from natural products, which are cheap and easy to obtain; but natural oil defoamers are insoluble in water, and only have defoaming effect on liquid surface foam. It cannot drive away and eliminate the foam dispersed in the liquid, and the natural oil ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/00B01D19/04C09K23/00
CPCB01D19/0404
Inventor 陈关喜吴清洲林信康黄继富
Owner 威尔(福建)生物有限公司
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