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Preparation of highly efficient water phase system non-organic silicon defoaming agent

A defoamer, non-organic technology, applied in the field of preparation of high-efficiency non-organic silicon defoamer, can solve the problems of production difficulties, defoaming and anti-foaming performance decline, etc.

Inactive Publication Date: 2006-04-26
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of defoamers prepared with these active substances is that the defoaming performance tends to decline as the temperature increases
Moreover, due to the application of some high-melting point compounds, high-temperature emulsification is required. Generally, the emulsification temperature is 90-100°C, which brings certain difficulties to production.

Method used

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  • Preparation of highly efficient water phase system non-organic silicon defoaming agent
  • Preparation of highly efficient water phase system non-organic silicon defoaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 10 parts of higher fatty alcohol, 2 parts of glycerol monostearate, 5 parts of higher fatty alcohol polyether (structural formula is i-C 13 h 27 O(EO) 5 (PO) 7 H), 10 parts of white oil, 2 parts of S-60 and 1 part of T-60 are added to the reaction flask, the system is heated up to 80°C, stirred for a while, so that the components are mixed evenly; then slowly add 70 parts of water, water After the addition, grind and disperse through a colloid mill until the particle size of the emulsion is less than 15um to obtain defoamer A.

Embodiment 2

[0022] Mix equal amounts of crude liquid wax and white carbon black, stir and disperse evenly as the active component (1).

[0023] Add 5 parts of higher fatty alcohols, 5 parts of higher fatty alcohol polyethers (structural formula is C 18 h 37 O(PO) 10 H), 4 parts of nitrogen-containing polyethers (a=10 in the structural formula, b=15, c=1), 6 parts of active components (1), 6 parts of behenyl stearate, 2 parts of TX- 10. 2 parts of TX-3, then the system was heated up to 70°C and kept for 10 minutes, then 70 parts of water was added. After the water was added, it was ground and dispersed by a colloid mill so that the particle size of the emulsion was less than 15 minutes, and the defoamer B was obtained.

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Abstract

The defoamer in this invention mainly comprises the following components: higher fatty alcohol, higher fatty alcohol polyether, polyether containing nitrogen, fatty acid ester, the mixture of dewatering particle and mineral oil, emulsifier and water. The preparing process is as follows: premixing the defoaming active substance with the emulsifier, heating the systematic temperature to a certain temperature, adding water slowly into it, determining whether passing the colloid grinder in accordance with the emulsion diameter, generally, the emulsion diameter is smaller than 15 um. The defoamer in this invention mainly solves the problem of the weakening of the property of the high temperature emulsifying and defoamer with the elevation of temperature, the product is safe and high effective, and suit for the paper making coating and paper bladder defoaming.

Description

technical field [0001] The invention relates to the preparation of a high-efficiency non-organic silicon defoamer used in an aqueous phase system. The defoamer is a fine chemical additive. Therefore, it belongs to the technical field of fine chemical preparations. Background technique [0002] In the production of the national economy, such as textile printing and dyeing, paint, papermaking, cleaning, metal processing, etc., people use a large number of chemical additives in order to achieve different purposes, but because the additives used are mainly surfactants , their disadvantage is that they will produce a lot of foam, especially anionic and nonionic surfactants are the most serious. If these harmful foams are not eliminated in time, it will have a serious impact on the follow-up process, and it is easy to cause product instability. To solve this problem, the current more efficient method is to add a defoamer to the foaming system. As an auxiliary agent, the defoamer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04C09K23/00
Inventor 吴飞曹治平
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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