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Antifoam composition

The technology of a composition and defoaming agent is applied in the field of fine chemical preparations and defoaming agent compositions with acrylate polymer as the main active substance, which can solve the problems of precipitation residue, environmental damage, etc., and achieves improved foam suppression performance, The effect of increasing the rate of foam breaking, increasing the speed of spreading and dispersion

Active Publication Date: 2022-05-03
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emergence of this type of defoamer can solve the problem of environmental damage and silicon precipitation residues, but there is still a lot of room for improvement in the defoaming and antifoaming performance of the defoamer prepared by the current technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Mix 40g of hydroxyethyl acrylate, 4g of α-dodecene, 4g of allyl methacrylate and 0.2g of benzoyl peroxide with ordinary stirring method to obtain the mixture H1;

[0037] 2) Add 47.6g of fatty alcohol polyoxyethylene ether, 4g of granular polyisobutylene and 0.2g of benzoyl peroxide into the reaction kettle, stir evenly with ordinary stirring, raise the temperature to 60°C, and then add dropwise under stirring Mixture H1, control the dropping time at 3h; ensure the temperature is controlled at 60°C by circulating water during the dropping;

[0038] 3) After the dropwise addition reaction, the heat preservation reaction was continued for 0.5 h to obtain the defoamer composition D1.

Embodiment 2

[0040] 1) Mix 50g of n-butyl acrylate, 2g of α-methylstyrene, 2g of double-terminated vinyl-terminated polysiloxane and 0.4g of benzoyl peroxide uniformly by high-speed dispersion to obtain mixture H2;

[0041] 2) Add 40g of polypropylene glycol 200, 5.2g of granular polymethacrylic resin and 0.4g of benzoyl peroxide into the reaction kettle and stir evenly in a high-speed dispersion manner, raise the temperature to 100°C, and then add dropwise under stirring For the mixture H2, the dropping time is controlled at 8 hours; during the dropping, the temperature is controlled at 100°C by means of cooling water;

[0042] 3) After the dropwise addition reaction, the heat preservation reaction was continued for 2 hours to obtain the defoamer composition D2.

Embodiment 3

[0044] 1) Mix 40g of isooctyl methacrylate, 2.4g of α-octadecene, 3.0g of vinyl MQ silicone resin and 0.3g of benzoyl peroxide with magnetic stirring to obtain mixture H3;

[0045] 2) Add 50g of polypropylene glycol 600, 4g of white carbon black and 0.3g of benzoyl peroxide into the reaction kettle and stir evenly with magnetic stirring, raise the temperature to 80°C, then add the mixture H3 dropwise under stirring, control The dropping time is 6 hours; during the dropping, the temperature is controlled at 80°C by means of cooling water;

[0046] 3) After the dropwise addition reaction, the heat preservation reaction was continued for 1 hour to obtain the defoamer composition D3.

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PUM

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Abstract

The invention provides a defoamer composition, which is an acrylate polymer prepared mainly from acrylate and / or methacrylate as the main monomer, which has good compatibility with the foaming system; the functional monomer olefin The introduction of the acrylate polymer improves the hydrophobicity of the acrylate polymer, thereby enhancing the defoaming and antifoaming properties of the defoamer composition; the introduction of the functional monomer crosslinking agent makes the acrylate polymer form a network structure, which improves the prepared defoamer. The anti-foaming performance of the composition; the introduction of the organic solvent makes the copolymerization reaction more uniform on the one hand, and at the same time increases the spreading and dispersion speed of the defoamer composition in the foaming system, thereby improving its anti-foaming performance; the introduction of hydrophobic particles improves The foam breaking rate of the defoamer composition, thereby improving its instant defoaming performance.

Description

technical field [0001] The invention belongs to the technical field of fine chemical preparations, relates to a fine chemical preparation, in particular to a defoamer composition, more precisely, a defoamer composition with acrylate polymer as the main active substance, And its application in the system rich in anionic surfactants such as papermaking, water treatment, textile and other industries. Background technique [0002] Defoamers are compositions used in industrial production to control foam in various processes. In industrial production, especially in papermaking, water treatment, textile and other industries, due to the rich water and a large amount of chemical additives added in the system, and accompanied by a large amount of mechanical energy, such as stirring, washing and thickening processes, etc., it is extremely difficult May cause foam formation. Liquid media (such as water), chemical additives (such as surfactants), air sources and mechanical energy are t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04C08F220/20C08F210/14C08F220/40C08F283/12C08F220/18C08F222/14C08F220/14
CPCB01D19/0404C08F220/20C08F283/124C08F220/18C08F220/14C08F210/14C08F220/40
Inventor 董飞李安宁黄伟安东尼.K.达西曹添韩玉玺
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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