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Silicone-polyether antifoaming agent and preparation method thereof

A technology of defoaming agent and silicon polyether, applied in the field of silicon polyether defoaming agent and its preparation, can solve the problems of high price and the like, and achieve the effects of simple preparation, good stability, and excellent antifoaming and antifoaming effect.

Inactive Publication Date: 2012-02-15
南京恒尔驰高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic demand for defoamers with both defoaming and antifoaming functions is mainly realized by imports, and the price is very expensive

Method used

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  • Silicone-polyether antifoaming agent and preparation method thereof
  • Silicone-polyether antifoaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100 parts of polyether polyol (Sinopec Asset Management Co., Ltd., Tianjin Petrochemical Branch Polyether Department, TMD-3000, hydroxyl value 54.5-57.5mgKOH / g, viscosity 500-700gKOH / g), 2 parts of potassium chlorate , 8 parts of propylene glycol, 4 parts of propylene oxide, and 1 part of ethylene oxide were reacted at 135°C to dissolve 10 g of reactants in 200 g of water to obtain modified polyether A1.

Embodiment 2

[0027] 100 parts of polyether polyol (Sinopec Asset Management Co., Ltd., Tianjin Petrochemical Branch Polyether Department, TMD-3050, hydroxyl value 54.5-57.5mgKOH / g, viscosity 400-600gKOH / g), sodium chlorate 5 parts, 4 parts of glycerin, 1 part of propylene oxide, and 4 parts of ethylene oxide were reacted at 135°C to dissolve 10 g of reactants in 200 g of water to obtain modified polyether A2.

Embodiment 3

[0029] 100 parts of polyether polyol (Sinopec Asset Management Co., Ltd., Tianjin Petrochemical Branch Polyether Department, TEP-330, hydroxyl value 33.5-36.5mgKOH / g, viscosity 800-1100gKOH / g), sodium chlorate 5 parts, 4 parts of glycerin, 4 parts of propylene oxide, and 1 part of ethylene oxide were reacted at 135°C until 8 g of reactants were dissolved in 200 g of water to obtain modified polyether B1.

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Abstract

The invention discloses a silicone-polyether antifoaming agent, comprising, by weight, 10-70 parts of water, 32-35 parts of dimethicone, 30-35 parts of polyether modified silicone oil and 20-25 parts of emulsifier, wherein the emulsifier is fatty alcohol polyoxyethylene ether and a flash point of the dimethicone is 295-300 DEG C. The silicone-polyether antifoaming agent of the invention is economical, environment-friendly, safe and easily prepared, and has good stability and excellent defoaming and antifoaming efficacies.

Description

technical field [0001] The invention relates to a silicon polyether defoamer and a preparation method thereof. Background technique [0002] The role of industrial defoamers mainly has two aspects: defoaming (breaking the harmful foam produced in the industrial production process or existing in the product) and foam suppression (suppressing the generation of new foam in the foaming system). The widely used defoamers mainly include two series of silicones and polyethers. Silicone defoamers have strong foam breaking ability and fast defoaming speed, but weak foam suppression ability; polyether defoamers have weak defoaming ability and strong foam suppression ability. However, in many fields, such as papermaking, textile printing and dyeing, oil processing, sewage treatment, oil extraction and transportation, etc., defoamers are required to have good defoaming and antifoaming functions. At present, the domestic demand for defoamers with both defoaming and antifoaming function...

Claims

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Application Information

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IPC IPC(8): B01D19/04
Inventor 张益鑫周广亭
Owner 南京恒尔驰高分子材料科技有限公司
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