A kind of modified tung linoleic acid polyether ester coating defoamer and preparation method thereof

A technology of tung linoleic acid and polyether ester, applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., can solve shrinkage cavities, weak defoaming ability of polyether defoamers, coating silicon spots, etc. problems, to achieve the effect of excellent foam breaking ability, strong foam suppression ability and rapid defoaming

Active Publication Date: 2022-07-26
山东峰泉新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the defoaming and antifoaming ability of mineral oil defoamers used in the coating industry is not as good as that of silicone defoamers, and mineral oil is a non-renewable resource; silicone defoamers are easy to demulsify and cause silicon spot, shrinkage cavity phenomenon; the defoaming ability of polyether defoamer is weak; the technical problem of hydrophobic white carbon black defoaming ability is insufficient, the present invention provides a kind of defoaming rapidly, strong antifoaming ability, good to coating compatibility, It is particularly important to be a paint defoamer that rarely causes coating silicon spots and shrinkage, and only adds a small amount of mineral oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A modified tung linoleic acid polyether ester coating defoamer is characterized in that it comprises the following components in mass percentage: 6% of fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester, 5% of mineral oil %, propylene glycol block polyether 4%, emulsifier 2%, thickener 1%, modified silica 1%, diglyceride oleate 3%, and the rest is water.

[0028] Further, the preparation method of the fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester comprises the following steps:

[0029] Step 1, fluorine-containing alkyl graft amino silicone oil: 2,2-difluoro-3,3-bis (trifluoromethyl) oxirane, amino hydrogen-containing silicone oil and catalyst are added in the reactor, nitrogen protection, Under the condition of 60 °C, the reaction is carried out for 7 h to obtain fluoroalkyl hydrogen-containing silicone oil;

[0030]Step II, preparation of fluorine-containing alkyl-amino silicone oil modif...

Embodiment 2

[0039] A modified tung linoleic acid polyether ester coating defoamer is characterized in that it comprises the following components in mass percentage: 7% of fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester, 6% of mineral oil %, propylene glycol block polyether 4.5%, emulsifier 2.5%, thickener 1.2%, modified silica 1.5%, diglyceride oleate 3.5%, and the rest is water.

[0040] Further, the preparation method of the fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester comprises the following steps:

[0041] Step 1, fluorine-containing alkyl graft amino silicone oil: 2,2-difluoro-3,3-bis (trifluoromethyl) oxirane, amino hydrogen-containing silicone oil and catalyst are added in the reactor, nitrogen protection, Under the condition of 65°C, the reaction is carried out for 7.5h to obtain fluoroalkyl hydrogen-containing silicone oil;

[0042] Step II, preparation of fluorine-containing alkyl-amino silicon...

Embodiment 3

[0051] A modified tung linoleic acid polyether ester coating defoamer is characterized in that it comprises the following components in mass percentage: 8% of fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester, 7% of mineral oil %, propylene glycol block polyether 5%, emulsifier 3%, thickener 1.5%, modified silica 2%, diglyceride oleate 4%, and the rest is water.

[0052] Further, the preparation method of the fluoroalkyl hydrogen-containing silicone oil modified tung linoleic acid polyether ester comprises the following steps:

[0053] Step 1, fluorine-containing alkyl graft amino silicone oil: 2,2-difluoro-3,3-bis (trifluoromethyl) oxirane, amino hydrogen-containing silicone oil and catalyst are added in the reactor, nitrogen protection, Under the condition of 70°C, the reaction is carried out for 8h to obtain fluoroalkyl hydrogen-containing silicone oil;

[0054] Step II, preparation of fluorine-containing alkyl-amino silicone oil modi...

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PUM

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Abstract

The invention belongs to the technical field of defoaming agents, and in particular relates to a modified tungsten linoleic acid polyetherester coating defoaming agent, which is characterized in that it comprises the following components in mass percentage: fluoroalkyl hydrogen-containing silicone oil modified tungsten oil Linoleic acid polyether ester 6-10%, mineral oil 5-9%, propylene glycol block polyether 4-6%, emulsifier 2-4%, thickener 1-2%, modified silica 1- 3%, diglyceride oleate 3-5%, and the rest is water. The invention also provides a preparation method of the modified tung linoleic acid polyether ester coating defoamer. The modified tung linoleic acid polyether ester coating defoamer disclosed in the invention has rapid defoaming, strong foam suppressing ability, excellent foam breaking ability, good compatibility with coatings, and rarely causes coating silicon spots and shrinkage cavities. , and only add a small amount of mineral oil.

Description

technical field [0001] The invention belongs to the technical field of defoaming agents, and particularly relates to a modified tungsten linoleic acid polyetherester coating defoaming agent and a preparation method thereof. Background technique [0002] Defoamer is a surfactant used to inhibit and eliminate various harmful foams. It is the most effective method to control foam. It is widely used in chemical, pharmaceutical, textile, printing and dyeing, mineral processing, coatings and sewage treatment. It will bring about the reduction of production capacity, waste of raw materials, quality degradation and other hazards, which will adversely affect production. The control and elimination of harmful foam has great technical and economic significance. [0003] In the coating production process, stirring will cause a large amount of foam in the coating. These foams may lead to reduced production capacity, waste of raw materials, prolonged reaction time, decreased product quali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
CPCB01D19/0409B01D19/0427
Inventor 朱水寿
Owner 山东峰泉新材料有限公司
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