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Emulsified type hyperbranched polyether modified organic siliconde foamer and preparation method thereof

A technology of organosilicon defoamer and hyperbranched polyether, which is applied in chemical instruments and methods, separation methods, foam dispersion/prevention, etc., can solve the problems of unsatisfactory shear resistance and limited application, and achieve excellent resistance The effects of shear performance, improved defoaming efficiency, and good application prospects

Inactive Publication Date: 2017-02-15
合肥新万成环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyether modified silicone oil defoamer currently studied is not ideal in terms of shear resistance, which limits its application in some fields such as coatings, petrochemicals, and papermaking.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] An emulsified hyperbranched polyether modified silicone defoamer, consisting of the following raw materials in parts by weight (kg): polysiloxane 32, hyperbranched polyether 18, allyl glycidyl ether 23, propylene oxide 52, double metal cyanide complex 0.4, isopropanol 60, chloroplatinic acid catalyst 0.5, ultrafine aluminum silicate 4, sorbitol 2, Tween 60 1, sodium carboxymethylcellulose 3, deionized water Appropriate amount, compound emulsifier 2;

[0026] The composite emulsifier is composed of the following raw materials: 0.5 parts of stearyl polyoxyethylene ether, and 1.5 parts of diethylene glycol monooleate.

[0027] Specific steps are as follows:

[0028] (1) Preparation of allyl-terminated hyperbranched polyether:

[0029] Add hyperbranched polyether and double metal cyanide complex into a high-pressure reactor, vacuumize and dehydrate, and replace with nitrogen for 3 times, after heating up to 120°C, feed 2 / 3 parts of propylene oxide to control the temperatu...

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PUM

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Abstract

The invention discloses an emulsified type hyperbranched polyether modified organic siliconde foamer, which is prepared from the following raw materials in parts by weight: 25 to 40 parts of polysiloxane, 15 to 23 parts of hyperbranched polyether, 18 to 27 parts of allyl glycidyl ether, 40 to 60 parts of epoxypropane, 0.3 to 0.6 part of double metal cyanide complex, 50 to 70 parts of isopropanol, 0.2 to 0.7 part of chloroplatinic acid catalyst, 3 to 7 parts of ultra-fine aluminum silicate, 1 to 2 parts of sorbitol, 0.8 to 2 parts of tween-60, 2 to 4 parts of sodium carboxymethyl cellulose, appropriate amount of deionized water, and 1 to 3 parts of compound emulsifier. The invention also relates to a preparation method, which comprises the following steps of adopting the hyperbranched polyether containing a large number of hydroxyl at the tail end as a raw material for preparing end-allyl grouphyperbranched polyether, utilizing a double bond structure of a modified hyperbranched polyetherend group and polysiloxane for hydrosilylation reaction, synthetizing hyperbranched polyether modified polysiloxane, and preparing the defoamer which has an excellent anti-shearing performance.

Description

technical field [0001] The invention relates to the field of chemicals, in particular to an emulsified hyperbranched polyether modified silicone defoamer and a preparation method thereof. [0002] technical background [0003] 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. [0004] The current defoamers can be divided into two categories: silicone type and polyether type according to the composition. Due to the addition of emulsifiers and other additives, silicone defoamers are prone to defects such as demulsification and oil floating at higher temperatures; Polyether-type defoamers are mostly polymers formed by ring-opening polymerization o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04C08G81/00
CPCB01D19/0404B01D19/0409B01D19/0413C08G81/00
Inventor 杨成勇杨云胡亚琼任意何庆海
Owner 合肥新万成环保科技有限公司
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