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High-efficiency antifoaming agent and preparation method thereof

A defoamer and high-efficiency technology, applied in the field of high-efficiency defoamer and its preparation, can solve the problems of low foam breaking rate and complex emulsification technology.

Inactive Publication Date: 2013-08-28
张家港市一达水泥混凝土外加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many types of defoamers. At present, the common ones are silicone type, polyether type, modified polyether, etc., but the fatal shortcomings of these defoamers are low foam breaking rate and complicated emulsification technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] (1) Take by weight 8% fluorosilicone oil; 5% triphenylmethane; 10% nonylphenol polyoxyethylene ether emulsifier; 100% deionized water;

[0011] (2), preparation method

[0012] Add fluorosilicone oil and triphenylmethane into the reaction kettle, keep it warm at 200°C for 8 hours, and grind the obtained product through a colloid mill; fully mix the above product with nonylphenol polyoxyethylene ether emulsifier, at 70°C, deionized water Phase inversion occurs when adding oil. When adding water, keep the emulsification temperature constant. After adding deionized water, cool to room temperature and pass through a colloid mill. Then add thickener and the rest of deionized water to dilute the product into a 20% emulsion.

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PUM

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Abstract

The invention relates to a high-efficiency antifoaming agent and a preparation method thereof. The high-efficiency antifoaming agent is mainly composed of fluorosilicon oil, triphenylmethane, a nonylphenol polyoxyethylene ether emulsifier, deionized water and a thickening agent. The high-efficiency antifoaming agent has characteristics of strong antifoaming efficacy, low surface tension, low volatile, no toxicity, no pollution and physiological inertness, and also is resistant to high temperature and strong alkalinity.

Description

technical field [0001] The invention relates to a high-efficiency defoamer and a preparation method thereof, belonging to the technical field of fine chemical preparations. Background technique [0002] In the production of many industrial products, a large number of bubbles and foams will be generated due to process problems. These bubbles and foams will seriously affect the production process of industrial products, reduce production efficiency, affect product quality and economic benefits, and overcome the impact of these bubbles and foam on industrial products. Adverse effects in the production process must try to eliminate foam and air bubbles or resist the generation of foam and air bubbles. Adding defoamers in production is an economical and convenient way to defoam. [0003] Generally speaking, foam is a coarse dispersion of gas in liquid, which belongs to gas-liquid heterogeneous phase, and defoamers can be divided into foam suppression and foam breaking in theory. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 顾宗法
Owner 张家港市一达水泥混凝土外加剂有限公司
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