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High-efficiency antifoaming agent

A defoamer and high-efficiency technology, applied in the direction of foam dispersion/prevention, etc., can solve the problems of slow defoaming speed and poor defoaming effect, and achieve strong foam suppression ability, improve defoaming speed, and good water compatibility. Effect

Inactive Publication Date: 2016-02-03
宣城市聚源精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the defoamers produced in the existing market have the problems of slow defoaming speed and poor defoaming effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A high-efficiency defoamer, made of the following ingredients in parts by weight, 40 parts of low-hydrogen silicone oil, 6 parts of n-amyl alcohol, 2 parts of white carbon black, 1 part of malonic acid, 8 parts of amino silicone oil, 1.5% concentrated 1 part of sulfuric acid, 8 parts of octamethylcyclotetrasiloxane, 2 parts of trifluoropropionic acid, 4 parts of polyether silicone oil, 3 parts of sodium hydroxymethyl cellulose, and 2 parts of sorbitol; it is made by the following production steps :

[0017] 1) Mix low-hydrogen silicone oil and polyether silicone oil in the first reaction kettle, then add 1.5% concentrated sulfuric acid, and react at 6-8Mpa pressure and 58°C for 5-7 hours;

[0018] 2) React n-pentanol, malonic acid and white carbon black with nitrogen at 55-60°C and 15-18MPa pressure for 35-40 minutes;

[0019] 3) Put the raw materials obtained in 1) and 2) into the second reaction kettle, add amino silicone oil when heated to 80°C, add octamethyltetras...

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Abstract

The invention discloses a high-efficiency antifoaming agent. The high-efficiency antifoaming agent is prepared from low-hydrogen silicone oil, n-amyl alcohol, white carbon black, malonic acid, amino silicon oil, 1.5% concentrated sulfuric acid, octamethylcyclotetrasiloxane, trifluoropropionic acid, polyether silicone oil, carboxymethyl cellulose sodium, and sorbitol. According to a preparation method, low-hydrogen silicone oil is subjected to chemical modification so as to obtain the high-efficiency antifoaming agent, defoaming speed of the high-efficiency antifoaming agent is increased greatly, foam inhibition performance is improved, using amount is one third less than that of common antifoaming agents, and the high-efficiency antifoaming agent possesses excellent water solubility.

Description

technical field [0001] The invention relates to the field of chemicals, in particular to a high-efficiency defoamer. Background technique [0002] Defoamers, also known as defoamers or defoamers, will produce many foams that affect production during industrial production, and defoamers need to be added. It is widely used to remove harmful foam produced in the production process of latex, textile sizing, food fermentation, biomedicine, paint, petrochemical, papermaking, industrial cleaning, sewage treatment and other industries. However, most of the defoamers produced in the existing market have the problems of slow defoaming speed and poor defoaming effect. Contents of the invention [0003] The purpose of the present invention is to provide a kind of high-efficiency defoamer. [0004] The present invention is realized through the following technical solutions: [0005] A high-efficiency defoamer, made of the following ingredients in parts by weight, 40 parts of low-hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 程聚光
Owner 宣城市聚源精细化工有限公司
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