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Modified organosilicone defoaming agent, defoaming agent composition and preparation method thereof

A technology of silicone defoamer and composition, applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., can solve the problems of large consumption, low foam breaking rate, low foam suppressing ability, etc. The effect of long-lasting foam suppression, rapid defoaming, suitable viscosity and concentration

Active Publication Date: 2018-05-04
广州旭太材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone defoamer has low toxicity, anti-oxidation, and strong foam-breaking ability, but its foam-suppressing ability is low, so it consumes a lot
Although polyether defoamers have strong antifoaming ability, their foam breaking rate is low.

Method used

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  • Modified organosilicone defoaming agent, defoaming agent composition and preparation method thereof
  • Modified organosilicone defoaming agent, defoaming agent composition and preparation method thereof
  • Modified organosilicone defoaming agent, defoaming agent composition and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a method for preparing a modified silicone defoamer, wherein the modified silicone defoamer is the above-mentioned modified silicone defoamer; the preparation method comprises:

[0041] First add the surfactant and the first thickener into the water, mix evenly at 60-80°C; then add silicone paste, EO / PO block copolymer, mix at 60-80°C; then cool down to 40-50°C ℃, add the remaining water and fungicide and mix well.

[0042] The present invention also provides a defoamer composition, comprising the following raw materials in parts by weight:

[0043] 90-100 parts of modified silicone defoamer, such as 90 parts, 92 parts, 95 parts, 98 parts or 100 parts;

[0044] 10-20 parts of leveling agent, such as 10 parts, 12 parts, 15 parts, 18 parts or 20 parts, etc.;

[0045] 0.2-0.3 parts of the second thickener such as 0.2 parts, 0.22 parts, 0.25 parts, 0.28 parts or 0.3 parts, etc.;

[0046] 0.01-0.05 parts of preservatives such as 0.01 pa...

Embodiment 1

[0056] (1) Preparation of modified silicone defoamer: First, stir and mix 1.4 parts of polyoxyethylene monostearate, 1.6 parts of glycerin fatty acid ester and 1.5 parts of carboxymethyl cellulose, add them to 35 parts of water, and heat to Stir and mix evenly at 70°C; then add 10 parts of silicone paste and 10 parts of EO / PO block copolymer, stir at 70°C for 30 minutes, then cool down to 50°C, stir the above mixture at 50°C for 30 minutes, and add 40 parts of water, and finally cooled to 30°C with stirring to obtain a modified silicone defoamer.

[0057] (2) Preparation of defoamer composition: Slowly add 0.2 parts of modified polyacrylic acid resin to 45 parts of deionized water (stir while adding), stir well, add 90 parts of modified silicone defoamer and stir evenly, then add 10 parts leveling agent α-[3-[1,3,3,3-tetramethyl-1-(trimethylsilyl-oxo)disiloxane]-propyl-ω-hydroxypolyoxyethylene ) and stir evenly, and finally add 0.01 part of Casson preservative, and it is read...

Embodiment 2

[0059] (1) Preparation of modified silicone defoamer: First, stir and mix 1 part of polyoxyethylene monostearate, 1 part of glycerin fatty acid ester and 1.8 parts of carboxymethyl cellulose, add to 30 parts of water, and heat to Stir and mix evenly at 60°C; then add 12 parts of silicone paste and 12 parts of EO / PO block copolymer, stir at 70°C for 30 minutes, then cool down to 40°C, stir the above mixture at 40°C for 30 minutes, and add 40 parts of water, and finally cooled to 30°C with stirring to obtain a modified silicone defoamer.

[0060] (2) Preparation of defoamer composition: Slowly add 0.22 parts of modified polyacrylic acid resin to 48 parts of deionized water (stir while adding), stir well, add 95 parts of modified silicone defoamer and stir evenly, then add 12 parts leveling agent α-[3-[1,3,3,3-tetramethyl-1-(trimethylsilyl-oxo)disiloxane]-propyl-ω-hydroxypolyoxyethylene ) and stir evenly, and finally add 0.03 parts of Kasone preservative, to get final product. ...

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Abstract

The invention discloses a modified organosilicone defoaming agent, a defoaming agent composition and a preparation method thereof. The modified organosilicone defoaming agent comprises the following raw materials in parts by weight: 10 to 20 parts of silicon paste, 10 to 15 parts of an EO / PO block copolymer, 2 to 5 parts of a surfactant, 1.5 to 3 parts of a thickening agent and 70 to 85 parts of water. The defoaming agent obtained by the modified organosilicone defoaming agent is rapid in defoaming, durable in foam inhibition, high in cost performance and high in dispersibility; the defoamingagent has high-temperature resistance, acid and alkali resistance, electrolyte resistance and shear resistance, has high compatibility with various kinds of dye, avoids oil floating, does not have silicon spots, is safe and non-toxic, meets the environment-protecting requirement, has stable quality, proper viscosity and proper concentration, and is convenient to use and dilute.

Description

technical field [0001] The invention relates to the field of defoaming technology, in particular to a modified silicone defoamer, a defoamer composition and a preparation method thereof. Background technique [0002] In the various processes of fabric dyeing and finishing, foaming is a difficult problem in the process of refining, bleaching, dyeing and finishing. At present, the textile printing and dyeing industry has continuously improved the quality requirements of defoamer products, requiring defoamers to be stable at a wide pH value and temperature, and capable of high shear, continuous defoaming and foam suppression. There are various types of defoamers ranging from natural substances to synthetic substances, among which polyether and silicone are superior in performance and have a wide range of applications. Silicone defoamers have low toxicity, anti-oxidation, and strong foam-breaking ability, but their foam-suppressing ability is low, so the consumption is large. ...

Claims

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Application Information

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IPC IPC(8): B01D19/04
CPCB01D19/0409
Inventor 阳聪康土娣尹双全
Owner 广州旭太材料科技有限公司
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