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Organosilicon defoaming agent for water-based system and preparation method thereof

A defoamer and silicone technology, applied in the coating and other directions, can solve the problem of needle eye, silicone polyether defoaming and anti-foaming effect is not ideal, shrinkage and other problems

Inactive Publication Date: 2007-02-28
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

For ink, it is easy to cause problems such as "shrinkage cavity" and "pinhole"
[0008] A large number of tests have shown that the anti-foaming effect of pure silicon polyether is not ideal

Method used

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  • Organosilicon defoaming agent for water-based system and preparation method thereof
  • Organosilicon defoaming agent for water-based system and preparation method thereof
  • Organosilicon defoaming agent for water-based system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] Example 1: Take 5 parts of silicone grease A and 15 parts of silicone polyether B, add 2 parts of S-60 and 1.4 parts of T-60 to it, keep the temperature at 65°C, slowly add 20 parts of thickener aqueous solution to the system, After the addition, pass through a colloid mill, then add the remaining thickener aqueous solution and stir evenly, and the obtained product is defoamer A.

example 2

[0046] Example 2: Take 6 parts of silicone grease B and 14 parts of silicone polyether C, add 2 parts of NP-10 and 2 parts of NP-3 to it, keep the temperature at 70°C, slowly add 25 parts of thickener aqueous solution to the system, After the addition, pass through a colloid mill, then add 25 parts of thickener aqueous solution, pass through the colloid mill again, and finally add the remaining thickener aqueous solution to it, stir evenly, cool to room temperature, and the obtained product is defoamer B.

example 3

[0047] Example 3: Take 5 parts of silicone grease A and 18 parts of silicone polyether D, add 2 parts of AEO-9 and 1.8 parts of AEO-3 to it, keep the temperature at 70°C, slowly add 25 parts of thickener aqueous solution to the system, After the addition, pass through a colloid mill, then add 25 parts of thickener aqueous solution, pass through the colloid mill again, and finally add the remaining thickener aqueous solution to it, stir evenly, cool to room temperature, and the obtained product is defoamer B.

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Abstract

The invention discloses an organic silicon defoamer and preparing method in the hydraulic flexible ink and paint, which comprises the following parts: silicon polyether, silicone grease, emulsifier and thickener, wherein the active content is 10-50% corresponding to emulsion; the silicon polyether and silicone grease is 70-90% in the active content; the disperse dielectric adopts deionized water.

Description

technical field [0001] The invention relates to a silicone defoamer for water-based systems and a preparation method thereof. More precisely, the invention relates to a silicone defoamer for water-based flexographic printing inks and water-based coatings and a preparation method thereof. Belongs to fine chemical additives [0002] technology field. Background technique [0003] With the enhancement of human awareness of environmental protection, the consumption of water-based inks and water-based coatings has shown an increasing trend year by year. According to statistics from the National Bureau of Statistics, my country's ink output in 2005 was 302,300 tons, an increase of 17.20% on the basis of 257,900 tons in 2004. At present, 100% of domestic flexographic printing uses water-based ink, and 80% of gravure printing uses water-based ink. It is estimated that by 2010, flexographic printing will reach about 15% in the printing field, and the annual demand for water-based i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C08G77/46
Inventor 吴飞曹治平丁曦
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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