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A kind of preparation method of additive for organosilicon defoamer

A silicone defoamer and additive technology, applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., can solve the problems of poor dispersion of silicone, no defoaming activity, too large particle size, etc., to improve water resistance Performance, improve defoaming effect, enhance the effect of permeability

Active Publication Date: 2021-06-08
上海斯诺化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: In view of the poor dispersion of organic silicon and the problem that it is easy to condense into oil droplets with no antifoaming activity and too large particle size, the present invention provides a method for preparing an additive for organic silicon defoaming agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] A preparation method for an additive for an organosilicon defoamer, characterized in that the preparation method comprises the steps of:

[0035] (1) Mix copper nitrate, platinum chloride, and zinc nitrate at a mass ratio of 7 to 9:3 to 5:2, collect the mixture, and ultrasonically vibrate the mixture and mixed solvent at a mass ratio of 1:6 to 9 for 15 minutes, then Add 10% to 15% of the mass of the mixture and stir evenly, and collect the stirred mixture;

[0036] (2) In terms of parts by weight, take 120-130 parts of benzyl alcohol, 30-40 parts of stirring mixture, 13-19 parts of urea, 6-12 parts of auxiliary agent, and 1-3 parts of auxiliary agent, and put them into the reaction kettle, Use nitrogen protection, preheat at 40-50°C for 20 minutes, raise the temperature to 95-110°C, stir and heat for 4-6 hours;

[0037] (3) After heating, cool, let stand for 2 hours, discharge, spray dry, collect the dry matter, calcinate the dry matter at 800-900°C for 2-3 hours, coll...

Embodiment 1

[0041] The mixed solvent is a mixture of 1.5mol / L hydrochloric acid solution and polyethylene glycol 400 at a volume ratio of 9:3.

[0042] The additive is made by mixing amino acid, sodium lauryl sulfate and hexadecylamine in a mass ratio of 6:2:3.

[0043] The amino acid is a mixture of glutamic acid and tyrosine in a mass ratio of 4:1.

[0044] The additive is made by mixing polyvinylpyrrolidone and oleylamine at a mass ratio of 8:2.

[0045] The auxiliary agent is sodium chloride.

[0046] The mixed monomer is made by mixing maleic anhydride and styrene in a mass ratio of 6:4.

[0047] The initiator is ammonium persulfate.

[0048] The mixed raw material is made by mixing methylvinyldichlorosilane and dimethylchlorosilane in a mass ratio of 4:2.

[0049] The catalyst is platinum nitrate.

[0050] A preparation method for an additive for an organosilicon defoamer, characterized in that the preparation method comprises the steps of:

[0051] (1) Mix copper nitrate, pla...

Embodiment 2

[0057] The mixed solvent is a mixture of 1.5mol / L hydrochloric acid solution and polyethylene glycol 400 at a volume ratio of 10:3.

[0058] The additive is made by mixing amino acid, sodium lauryl sulfate and hexadecylamine in a mass ratio of 6:3:3.

[0059] The amino acid is a mixture of glutamic acid and tyrosine in a mass ratio of 4:2.

[0060] The additive is made by mixing polyvinylpyrrolidone and oleylamine at a mass ratio of 8:3.

[0061] The auxiliary agent is sodium sulfate.

[0062] The mixed monomer is made by mixing maleic anhydride and styrene at a mass ratio of 6:5.

[0063] The initiator is azobisisobutyronitrile.

[0064] The mixed raw material is made by mixing methylvinyldichlorosilane and dimethylchlorosilane in a mass ratio of 4:3.

[0065] The catalyst is chloroplatinic acid hexahydrate.

[0066] A preparation method for an additive for an organosilicon defoamer, characterized in that the preparation method comprises the steps of:

[0067] (1) Mix c...

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PUM

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Abstract

The invention discloses a method for preparing an additive for an organosilicon defoamer, and belongs to the technical field of chemical industry. In the present invention, copper nitrate, platinum chloride, and zinc nitrate are used as raw materials to form porous flake-like metal composites by calcining, and then the metal composites and mixed monomers are mixed and reacted, and then mixed with the mixed raw materials. The reaction of raw materials forms a hyperbranched silicon-containing polymer, which improves water resistance on the one hand and enhances permeability on the other. Secondly, through the effect of the polymer on the surface of the particles, the binding performance with the defoamer can be increased or decreased, the dispersion performance of the defoamer can be enhanced, the permeability performance can be improved, and the entry energy barrier of silicone in the foam film can be reduced, which improves the foam suppression effect , and use the dispersion effect of particles to avoid the agglomeration of silicone. The invention solves the problem that the current organic silicon has poor dispersibility and is easy to condense into oil droplets with no defoaming activity and too large particle size.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of an additive for an organic silicon defoamer. Background technique [0002] Defoamer is a widely used fine chemical, mainly used to eliminate and suppress various harmful foams. As a defoaming agent, it should have basic characteristics such as insoluble or insoluble in the foaming liquid, lower surface tension than the foaming liquid, certain affinity with the foaming liquid, no chemical reaction with the foaming liquid, and low volatility. . The use of defoamers is one of the effective means of eliminating harmful foam in industry. [0003] 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 wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04C08F222/06C08F212/08C08F2/44
CPCB01D19/0409C08F2/44C08F222/06C08F212/08
Inventor 黄兰英
Owner 上海斯诺化学科技有限公司