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Preparation and application of non-silicon defoaming agent

A defoamer and defoaming technology, applied in the directions of foam dispersion/prevention, dissolution, chemical instruments and methods, etc., can solve the problems of poor defoaming and anti-foaming performance, affecting the quality of phosphating and spraying, and easy demulsification.

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

At present, some manufacturers use silicone defoamers, and some manufacturers use non-organosilicon defoamers. Silicone defoamers are easy to break under the environment of use, so "silicon spots" are formed on the steel plate, which affects phosphating. and the quality of spraying, resulting in product defects
In comparison, the use of non-silicon defoamers does not have these problems and is more popular, but non-silicon defoamers have the disadvantage of poor defoaming performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 50 parts of liquid wax with a viscosity of 40 mPas and 4 parts of aluminum stearate into the reaction bottle, start stirring, slowly raise the temperature to 115-120° C., and keep it warm for 1 hour. Add 30 parts of alkylbenzene to it, lower the temperature to 90°C, add 3 parts of hydrophobic white carbon black, and keep it at 85-90°C for 1 hour. After the heat preservation is over, cool down to around 50°C and add 10 parts of special modified polyether, stir well, then add 3 parts of TX-7, mix well, and obtain the defoamer A of the present invention.

Embodiment 2

[0022] Add 30 parts of alkylbenzene, 2 parts of aluminum stearate and 3 parts of EBS into the reaction flask, start stirring, slowly raise the temperature to 135-140°C, and keep it warm for 30 minutes. Add 40 parts of base oil to it, lower the temperature to 90°C, add 2 parts of hydrophobic white carbon black, and keep it at 85-90°C for 1 hour. After the heat preservation is over, cool down to around 50°C and add 20 parts of special modified polyether, stir well, then add 4 parts of NP-6, mix well, and obtain the defoamer B of the present invention.

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Abstract

The patent discloses a non organic silicon defoamer, mainly comprising: carrier, main defoamer, defoamer booster, deflocculating agent and emulsifier; the preparing process comprises: adding the carrier and main defoamer into the reactioin bulb, stirring, heating slowly to 90-200 Deg C, keeping for 0.5-2 hours, adding deflocculating agent into it, cooling to under 100 Deg C, adding defoamer booster, stirring evenly and cooling to under 70 Deg C, adding emulsifier, mixing evenly and getting the non organic silicon defoamer. The defoamer in this invention solves the shortcoming of bad defoaming effect exsiting in the non silicon defoamer, and possesses characteristics of good property, stable, little adding quantity and safe, and etc; the defoamer can be used in the architectural coating, paper making coating, metal cleaning and electrical board cleaning.

Description

technical field [0001] The invention relates to a chemical composition and a preparation method thereof, more precisely to the preparation of a non-organic silicon defoamer, and the defoamer is a fine chemical additive. Therefore, it belongs to the technical field of fine chemical preparations. Background technique [0002] Defoamer is a kind of fine chemical additive, its main function includes two aspects of defoaming and foam suppression. A good defoamer not only has excellent defoaming and antifoaming properties, but also requires excellent compatibility with other additives and stability in the foaming system. The silicone defoamer mainly relies on the oxygen atoms connected to the silicon atoms in the silicone oil molecules to form a certain strength of hydrogen bonds with water, so that it has a low surface tension and makes the silicone oil molecules spread easily. The basic viewpoints of spreading coefficient and immersion coefficient proposed by S·Ross and Woods ...

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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