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Composite defoamer and preparation method thereof

A defoamer and catalyst technology, applied in the field of composite defoamer and its preparation, can solve the problems of long defoaming time, single type, short foam suppression time, etc.

Active Publication Date: 2021-05-18
广州碧驰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of composite defoamer and preparation method thereof, to solve the single type of defoamer in the prior art, resulting in longer defoaming time and shorter foam suppression time, and because of its single type, thus Not very well applied to the elimination of various types of foam

Method used

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  • Composite defoamer and preparation method thereof
  • Composite defoamer and preparation method thereof

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preparation example Construction

[0022] In order to achieve the above object, the invention provides a kind of preparation method of composite defoamer, wherein, comprise the following steps:

[0023] 1) Stearic acid and antioxidant are mixed and heated to a temperature of 80-100° C. until the stearic acid is melted to obtain a mixed solution X1; after adding ethylenediamine and the first catalyst to the mixed solution X1, the temperature is Stir and mix for 3-5 hours under the condition of 140-150°C to prepare the base material Y1;

[0024] 2) In the presence of the second catalyst and at a temperature of 80-100°C, mix hydrogen-containing silicone oil and allyl polyoxyethylene polyoxypropylene ether to prepare the base material Y2;

[0025] 3) In the presence of the third catalyst, put silicon dioxide and simethicone oil at a temperature of 150-180°C for a mixed reaction for 4-6 hours to prepare the base material Y3;

[0026] 4) mixing and emulsifying base material Y1, base material Y2, base material Y3 and...

Embodiment 1

[0039] 1) 56.9g (0.2mol) of stearic acid and a concentration of 0.3% by weight sodium bisulfite aqueous solution (wherein the content of sodium bisulfite in the solution is 0.123g) are mixed and heated to a temperature of 80°C, until the stearin Acid is melted, and mixed solution X1 is obtained; In mixed solution X1, add 4.808g (0.08mol) ethylenediamine and concentration after being 0.5% by weight phosphoric acid aqueous solution (wherein, the content of phosphoric acid in the solution is 0.247g), at a temperature of 140 Stir and mix for 3 hours under the condition of ℃ to prepare the base material Y1;

[0040] 2) In the presence of an isopropanol solution of 1% by weight of chloroplatinic acid (wherein the content of chloroplatinic acid in the solution is 0.001% by weight), and the temperature is 80°C, 1 part by weight of hydrogen-containing Silicone oil is mixed with 0.8 parts by weight of allyl polyoxyethylene polyoxypropylene ether to prepare base material Y2;

[0041] 3)...

Embodiment 2

[0044] 1) 56.9g (0.2mol) of stearic acid and 0.3% by weight of sodium bisulfite aqueous solution (wherein the content of sodium bisulfite in the solution is 0.330g) are mixed and heated to a temperature of 100°C until stearic acid melts , to prepare mixed solution X1; after adding 9.015g (0.15mol) ethylenediamine and 0.5% by weight phosphoric acid aqueous solution (wherein, the content of phosphoric acid in the solution is 0.461g) to mixed solution X1, under the condition that temperature is 150 ℃ Stir and mix for 5 hours to prepare the base material Y1;

[0045] 2) In the presence of an isopropanol solution of 1% by weight of chloroplatinic acid (wherein the content of chloroplatinic acid in the solution is 0.003% by weight), and the temperature is 100°C, 1 part by weight of hydrogen-containing Silicone oil is mixed with 1.2 parts by weight of allyl polyoxyethylene polyoxypropylene ether to prepare base material Y2;

[0046] 3) In the presence of 0.01 parts by weight of olei...

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Abstract

The invention provides a composite defoamer and a preparation method thereof, comprising: 1) mixing stearic acid and an antioxidant and heating to a temperature of 80-100°C until the stearic acid melts to obtain a mixed solution X1; After adding ethylenediamine and the first catalyst to the mixed liquid X1, stirring and mixing at a temperature of 140-150°C for 3-5 hours to prepare the base material Y1; 2) In the presence of the second catalyst, and the temperature is 80- Under the condition of 100°C, mix hydrogen-containing silicone oil and allyl polyoxyethylene polyoxypropylene ether to prepare base material Y2; 3) In the presence of the third catalyst, put silicon dioxide and dimethyl silicone oil Mix and react at a temperature of 150-180°C for 4-6 hours to prepare base material Y3; 4) mix and emulsify base material Y1, base material Y2, base material Y3 and water to prepare a composite defoamer. The invention realizes the effects of simple preparation, mild conditions, good defoaming and antifoaming performance, and being applicable to various foam types.

Description

technical field [0001] The invention relates to the field of defoamers, in particular to a composite defoamer and a preparation method thereof. Background technique [0002] In life and production, some harmful foams are often produced. For example, in the processes of printing and dyeing, papermaking, and wastewater treatment, a large amount of harmful foams will be produced, which seriously affects the quality of life and production, and brings great pollution to the environment. The generation of foam is due to the insoluble gas is surrounded in the film formed by liquid or solid, and through many of these films gather, thus forming a foam. Its essence is that when the insoluble gas is surrounded by the surrounding liquid, its hydrophobic group moves away from the liquid instantly and enters the interior, and the hydrophilic group combines with the liquid to form an adsorption film, while the adsorption film appears as a sphere due to surface tension and other effects, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04C08G77/46
CPCB01D19/0409B01D19/0413C08G77/46
Inventor 不公告发明人
Owner 广州碧驰新材料股份有限公司