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Organic silicon defoaming agent and preparation method thereof

A technology of silicone defoamer and emulsifier, applied in the direction of foam dispersion/prevention, etc., can solve the problems of easy breakage, strong hydrophobicity and oleophobicity, restrictions, etc., and achieve excellent use effect, fast defoaming speed, and less dosage.

Active Publication Date: 2014-06-25
SUZHOU HENGKANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its application in bio-fermentation, papermaking, printing and dyeing industries is limited due to its siloxane main chain is easy to break in the environment of strong acid and strong alkali and its own strong hydrophobicity and oleophobicity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of silicone defoamer comprises the following steps: (1) Take 13kg of dimethyl silicone oil, 7kg of hydroxy silicone oil, 2kg of silicon dioxide, and 7kg of fatty amine polyoxyethylene ether into the reactor, and raise the temperature of the reactor to 100-120°C, the stirring speed is 60-90rpm for 1h; (2) The temperature of the reaction kettle is raised to 120-135°C, and then stirred, the stirring speed is 60-90rpm for 2h; (3) Into the reaction kettle Add 3kg of thickener, raise the temperature of the reactor to 220-250°C, and stir at 50-70rpm for 3 hours; (4) Lower the reactor to 90-100°C, add 2kg of hydrocarbon oil, 9kg of emulsifier, 75kg of water, heat preservation and stirring for 3 hours will be the obtained product.

Embodiment 2

[0015] The preparation method of silicone defoamer comprises the following steps: (1) Take 15kg of dimethyl silicone oil, 7kg of hydroxy silicone oil, 2kg of silicon dioxide, and 7kg of fatty amine polyoxyethylene ether into the reactor, and raise the temperature of the reactor to 100-120°C, the stirring speed is 60-90rpm for 1h; (2) The temperature of the reaction kettle is raised to 120-135°C, and then stirred, the stirring speed is 60-90rpm for 2h; (3) Into the reaction kettle Add 3kg of thickener, raise the temperature of the reactor to 220-250°C, and stir at 50-70rpm for 3 hours; (4) Lower the reactor to 90-100°C, add 2kg of hydrocarbon oil, 9kg of emulsifier, 75kg of water, heat preservation and stirring for 3 hours will be the obtained product.

Embodiment 3

[0017] The preparation method of the silicone defoamer comprises the following steps: (1) Take 10kg of dimethyl silicone oil, 10kg of hydroxyl silicone oil, 4kg of silicon dioxide, and 2kg of fatty amine polyoxyethylene ether into the reactor, and raise the temperature of the reactor to 100-120°C, the stirring speed is 60-90rpm for 1h; (2) The temperature of the reaction kettle is raised to 120-135°C, and then stirred, the stirring speed is 60-90rpm for 2h; (3) Into the reaction kettle Add 2kg of thickener, raise the temperature of the reactor to 220-250°C, and stir at 50-70rpm for 3 hours; (4) Lower the reactor to 90-100°C, add 1kg of hydrocarbonated oil, 5kg of emulsifier, 60kg of water, heat preservation and stirring for 3 hours to obtain the product.

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PUM

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Abstract

The invention relates to an organic silicon deforming agent and a preparation method thereof. The organic silicon deforming agent consists of the following components in parts by weight: 10-20 parts of dimethicone, 5-10 parts of hydroxyl silicone oil, 1-4 parts of silicon dioxide, 2-10 parts of fatty amine polyoxyethylene ether, 1-2 parts of alkymer, 5-15 parts of emulgators, 2-4 parts of thickening agents and 60-80 parts of water. The preparation method of the organic silicon deforming agent comprises the following steps of heating, stirring and heat preservation. The prepared organic silicon deforming agent has the characteristics of good stability, rapid defoaming speed, less dosage, no toxicity and odor and the like, and has an excellent using effect in elimination and inhibition of foam in the industries of paper making, oil ink, painting, chemical engineering and the like.

Description

technical field [0001] The invention relates to a chemical auxiliary agent and a preparation method thereof, more particularly to an organic silicon defoamer and a preparation method thereof. Background technique [0002] Many harmful foams are often produced in the process of industrial production, which requires defoamers to eliminate and suppress them. At present, there are many types of defoamers in China, mainly including: polyether defoamers, fatty amine surfactant defoamers, and silicone defoamers. As far as the current defoamers are concerned, polyether Silicone-based and silicone-based defoamers have the best performance, and research on the modification and development of new varieties of these two types of defoamers is also active. [0003] Polyether defoamer is a non-ionic surfactant with excellent performance prepared by ring-opening polymerization of ethylene oxide and propylene oxide. Widely used in water systems, it has good hydrophilicity and anti-foaming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 邓强
Owner SUZHOU HENGKANG NEW MATERIALS
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