Defoaming agent for coating material ink

A coating ink, defoamer technology, applied in the direction of ink, application, coating, etc., can solve the problems of poor dispersion of silicone, no defoaming activity, too large particle size, etc., to achieve good defoaming, improve viscosity increase, The effect of stable quality

Inactive Publication Date: 2020-05-08
湖北新四海化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, organosilicon-based defoamers have attracted widespread attention due to their high defoaming efficiency, low dosage, and no physiological toxicity. However, silicones have poor dispersibility, are difficult to emulsify, and tend to condense into oversized oils that have no defoaming activity. beads, while pure silicone oil has no defoaming effect on the foam of aqueous solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of defoamer for coating ink, in parts by mass, adopts the following steps to make:

[0019] S1, after mixing 20 parts of polydimethylsiloxane, 8 parts of higher carbon alcohol, 3 parts of zinc stearate, 1 part of methyl acrylate, 4 parts of monoglycerin fatty acid ester, and 0.5 part of secondary alkyl sodium sulfonate , and stir evenly to prepare liquid A;

[0020] S2, add 3 parts of sodium hexametaphosphate, 2 parts of sorbitan fatty acid and 3 parts of carboxymethyl cellulose into 85 parts of deionized water, and stir evenly to obtain liquid B;

[0021] S3, mix liquid A and liquid B at 70°C, heat up to 100°C and stir evenly, then add 15 parts of hydrophobic silicon dioxide and keep warm for 30 minutes to prepare a defoamer for paint and ink.

Embodiment 2

[0023] A kind of defoamer for coating ink, in parts by mass, adopts the following steps to make:

[0024] S1, mix 30 parts of polymethyltriethoxysilane, 5 parts of higher carbon alcohol, 1 part of zinc stearate, 4 parts of methyl acrylate, 2 parts of monoglyceride fatty acid ester, and 2 parts of sodium secondary alkyl sulfonate Finally, stir evenly to obtain liquid A;

[0025] S2, add 3 parts of sodium hexametaphosphate, 5 parts of polysorbate and 1.5 parts of carboxyethyl cellulose into 70 parts of deionized water, and stir evenly to prepare liquid B;

[0026] S3, mix liquid A and liquid B at 60°C, heat up to 90°C and stir evenly, add 30 parts of hydrophobic silicon dioxide and 0.1 part of tetrabutylammonium fluoride, and keep warm for 40 minutes to prepare a disinfectant for coating ink. foaming agent.

Embodiment 3

[0028] A kind of defoamer for coating ink, in parts by mass, adopts the following steps to make:

[0029] S1, after mixing 40 parts of polymethyltrimethoxysilane, 15 parts of higher alcohol, 2 parts of zinc stearate, 2 parts of methyl acrylate, 4 parts of monoglyceride fatty acid ester, and 1 part of sodium secondary alkyl sulfonate , and stir evenly to prepare liquid A;

[0030] S2, add 2 parts of sodium hexametaphosphate, 3 parts of fatty acid esters of glycerol and 2 parts of xanthan gum into 75 parts of deionized water, and stir evenly to prepare liquid B;

[0031] S3, mix liquid A and liquid B at 65°C, heat up to 95°C and stir evenly, then add 20 parts of hydrophobic silicon dioxide, 0.2 parts of tetrabutylammonium fluoride and 2 parts of glutaraldehyde, and keep warm for 35 minutes. A defoamer for coating ink is prepared.

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PUM

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Abstract

The invention belongs to the technical field of defoaming agents, and particularly relates to a defoaming agent for coating material ink, wherein the defoaming agent comprises the following raw materials in parts by weight: 20- 40 parts of polysiloxane, 15-30 parts of hydrophobic silica, 5-15 parts of higher alcohol, 1-3 parts of zinc stearate, 2-4 parts of methyl acrylate, 2-4 parts of monoglycerol fatty acid ester, 1-3 parts of sodium hexametaphosphate, 0.5-2 parts of secondary alkyl sodium sulfonate, 2-5 parts of a surfactant, 1.5-3 parts of a thickener, 0-3 parts of a bactericide and 70-85parts of deionized water. The defoaming agent of the invention has good defoaming and foam inhibition characteristics, is stable in quality after being stored and used for a long time, and has good use value.

Description

technical field [0001] The invention belongs to the technical field of defoamers, in particular to a defoamer for paint and ink. Background technique [0002] In the fields of oil and gas extraction, pulp and paper, textile printing and dyeing, biological fermentation, sewage treatment, coating processing and construction industry, the foam generated by stirring will cause problems such as reduced production capacity, prolonged reaction cycle and waste of raw materials. Adding a defoamer can eliminate foam in a short time. Defoamers can be divided into mineral oil defoamers, polyether defoamers and silicone defoamers. Mineral oil defoamers can only be used under the conditions of small liquid shear force and moderate foaming ability of the surfactant contained, and their ability to eliminate dense foam is poor. [0003] Polyether defoamers can only play a defoaming effect when the temperature of the foaming system exceeds the cloud point temperature. In recent years, orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/61C09D7/63C09D7/65C09D11/00
CPCC09D7/61C09D7/63C09D7/65C09D11/00
Inventor 陈华龚家全杨帆
Owner 湖北新四海化工股份有限公司
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