High-efficiency organic silicon defoaming agent

A silicone defoamer, high-efficiency technology, applied in the direction of foam dispersion/prevention, can solve the problems of unfavorable promotion, high production cost, complicated process, etc., and achieve good adaptability, fast defoaming speed and less dosage Effect

Inactive Publication Date: 2013-04-17
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • High-efficiency organic silicon defoaming agent

Examples

Experimental program
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Effect test

Embodiment 1

[0016] In a stainless steel electric heating reactor, add 50g of KF-96 and 20g of 201 silicone oil, raise the temperature to 200°C, start the agitator (120r / min), add 5g of fumed silica, and stir for 30 minutes to fully homogenize the two materials , heated up to 250°C, added 8g dispersant IW, 3g dispersing solubilizer S, 5g polyether F-6, 4g polyether F68, 12g sorbitan monostearate (Span60), 12g sorbitan monostearate Acetate polyoxyethylene ether (Tween60), then add 5g of water, keep it warm for 2 hours, cool down to 100°C, then add 15g of water, stir and naturally cool down to 80°C, and discharge under stirring.

Embodiment 2

[0018] In a stainless steel electric heating reactor, add 25g of KF-96 and 55g of 201 silicone oil, raise the temperature to 200°C, start the agitator (120r / min), add 4g of fumed silica, and stir for 30 minutes to fully homogenize the two materials , heated up to 250°C, added 6g dispersant IW, 4g dispersing solubilizer S, 8g polyether F-6, 5g polyether F38, 7g sorbitan monostearate (Span60), 7g sorbitan monostearate Acetate polyoxyethylene ether (Tween60), add 8g of water, keep warm for 2 hours, cool down to 100°C, then add 12g of water, stir and naturally cool down to 80°C, and discharge under stirring.

Embodiment 3

[0020] In a stainless steel electric heating reaction kettle, add 40g of KF96 and 40g of 201 silicone oil, raise the temperature to 200°C, start the agitator (120r / min), add 3g of fumed silica, stir for 30 minutes to fully homogenize the two materials, and raise the temperature To 250°C, add 9g dispersant IW, 5g dispersing solubilizer S, 7g polyether F-6, 6g polyether F68, 8g sorbitan monostearate (Span60), 8g sorbitan monostearate Ester polyoxyethylene ether (Tween60), add 12g of water, keep it warm for 2 hours, cool down to 100°C, then add 10g of water, stir and naturally cool down to 80°C, and discharge under stirring.

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Abstract

The invention discloses a high-efficiency organic silicon defoaming agent and belongs to the technical field of fine chemical engineering. The defoaming agent consists of the following components in part by weight: 50 to 90 parts of mixture of hydroxyl silicone oil and 201 silicone oil, 2 to 15 parts of gaseous phase white carbon black, 2 to 12 parts of condensation compound of fatty alcohol and ethylene oxide, 1 to 6 parts of modified nonionic surfactant, 1 to 10 parts of allyl alcohol polyoxyl alkyl ether, 1 to 8 parts of propylene glycol block polyether, 3 to 20 parts of sorbitol anhydride monostearate, 3 to 20 parts of dehydrated sorbitol monostearate polyoxyl vinethene and 10 to 30 parts of water. The defoaming agent has the characteristics of high defoaming speed, strong foam inhibiting ability, no toxicity, high adaptability, small using amount and the like.

Description

technical field [0001] The invention relates to a high-efficiency organosilicon defoamer and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Defoamer is a surfactant used to suppress and eliminate various harmful foams. It is the most effective chemical method to control foam. It is widely used in chemical industry, medicine, textile, printing and dyeing, mineral processing, coating, ink and sewage treatment and other fields. Foam in industrial production will bring harm such as reduced production capacity, waste of raw materials, and reduced quality, which will adversely affect production. Currently commercially available defoamers are highly targeted, and the defoaming effect is not very satisfactory. Foreign defoamers have better performance, but are expensive, and it is difficult to achieve large-scale promotion in China. [0003] CN101053801A discloses a polyether modified silicone defoamer composition, C...

Claims

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Application Information

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IPC IPC(8): B01D19/04
Inventor 庄玉伟郭辉张国宝曹健赵俊杰赵根锁
Owner HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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