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Antifoaming agent

A defoamer and low hydrogen-containing silicone oil technology, applied in the direction of foam dispersion/prevention, can solve the problems of poor defoaming effect and slow defoaming speed, achieve strong foam suppression ability, improve the speed of defoaming, and improve the efficiency of defoaming. The effect of water solubility

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

[0015] A defoamer, made of the following ingredients in parts by weight, 40 parts of low-hydrogen silicone oil, 8 parts of amino silicone oil, 1 part of 1.5% concentrated sulfuric acid, 8 parts of octamethylcyclotetrasiloxane, trifluoropropionic acid 2 parts, 4 parts of polyether silicone oil, 3 parts of sodium hydroxymethyl cellulose, 2 parts of sorbitol; it is made by the following production steps:

[0016] 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;

[0017] 2) Put the raw materials obtained in 1) into the second reaction kettle, when heated to 80°C, add amino silicone oil, when the temperature rises to 120°C, add octamethyltetrasiloxane, when the temperature rises to 160°C , stop heating, react for 3-4 hours, take out the material;

[0018] 3) Put the material taken out in 2) into the colloid mill and grind for 0.5-1 hour, then put ...

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PUM

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Abstract

The invention discloses an antifoaming agent. The antifoaming agent is prepared from low-hydrogen silicone oil, 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 antifoaming agent, defoaming speed of the antifoaming agent is increased greatly, foam inhibition performance is improved, using amount is one third less than that of common antifoaming agents, and the antifoaming agent possesses excellent water solubility.

Description

technical field [0001] The invention relates to the field of chemicals, in particular to a 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 object of the present invention is to provide a defoamer. [0004] The present invention is realized through the following technical solutions: [0005] A defoamer, made of the following ingredients in parts by weight, 40 parts of low-hydrogen silicone oil, 8 parts of amino silicone oil, 1 part...

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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