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Waterborne stearic acid emulsion and preparation method thereof

A technology of stearic acid and emulsion, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of easy precipitation, high production cost, flocculation and stratification, etc., so as to save production cost and simplify production process , the effect of strong dispersion ability

Active Publication Date: 2019-01-18
广州正浩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the existing water-based stearic acid emulsion is added with emulsifiers and dispersants, the dispersion effect is not good, it is easy to precipitate, and flocculation and stratification will occur after long-term storage
In addition, the existing method requires high-speed stirring and grinding under heating conditions in the process of preparing aqueous stearic acid emulsion, the production process is complicated, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 aqueous stearic acid emulsion

[0028] Composition in parts by weight of raw materials: 35 parts of stearic acid; 8 parts of emulsifier A; 6 parts of emulsifier B; 0.5 parts of defoamer; 0.2 parts of preservative; 50 parts of water;

[0029] Described antifoaming agent selects polydimethylsiloxane; Described preservative selects Cathone; Described emulsifier A is selected from nonylphenol polyoxyethylene ether; Described emulsifier B is prepared by the following method :

[0030] (1) Thionyl chloride was added dropwise to 11-trans-octadecenoic acid, the reaction temperature was controlled at 55°C, and the reaction was stirred for 4 hours to obtain 11-trans-octadecenoic acid chloride;

[0031] (2) Add sinapyl alcohol to acetone solution, then add 11-trans-octadecenoic acid chloride, react at 35°C for 2 hours, and wash the product to obtain the emulsifier B;

[0032] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride descr...

Embodiment 2

[0036] The preparation of embodiment 2 aqueous stearic acid emulsion

[0037] Composition in parts by weight of raw materials: 20 parts of stearic acid; 5 parts of emulsifier A; 5 parts of emulsifier B; 0.5 parts of defoamer; 0.1 part of preservative; 30 parts of water;

[0038] Described antifoaming agent selects polydimethylsiloxane; Described preservative selects Cathone; Described emulsifier A is selected from nonylphenol polyoxyethylene ether; Described emulsifier B is prepared by the following method :

[0039] (1) Thionyl chloride was added dropwise to 11-trans-octadecenoic acid, the reaction temperature was controlled at 50°C, and the reaction was stirred for 5 hours to obtain 11-trans-octadecenoic acid chloride;

[0040] (2) Add sinapyl alcohol to acetone solution, then add 11-trans-octadecenoic acid chloride, react at 30°C for 3 hours, and wash the product to obtain the emulsifier B;

[0041] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride descri...

Embodiment 3

[0045] The preparation of embodiment 3 aqueous stearic acid emulsion

[0046] Composition in parts by weight of raw materials: 50 parts of stearic acid; 10 parts of emulsifier A; 8 parts of emulsifier B; 1 part of defoamer; 0.5 parts of preservative; 60 parts of water;

[0047] Described antifoaming agent selects polydimethylsiloxane; Described preservative selects Cathone; Described emulsifier A is selected from nonylphenol polyoxyethylene ether; Described emulsifier B is prepared by the following method :

[0048] (1) Thionyl chloride was added dropwise to 11-trans-octadecenoic acid, the reaction temperature was controlled at 60°C, and the reaction was stirred for 2 hours to obtain 11-trans-octadecenoic acid chloride;

[0049] (2) Add sinapyl alcohol to acetone solution, then add 11-trans-octadecenoic acid chloride, react at 40°C for 1 hour, and wash the product to obtain the emulsifier B;

[0050] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride describe...

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Abstract

The invention relates to the technical field of stearic acid and in particular discloses waterborne stearic acid emulsion and a preparation method thereof. The waterborne stearic acid emulsion is prepared from the following raw material components in parts by weight: 20 to 50 parts of stearic acid, 5 to 10 parts of an emulsifier A, 5 to 10 parts of an emulsifier B, 0.1 to 1 part of a de-foaming agent, 0.1 to 1 part of a preservative and 30 to 60 parts of water. According to the waterborne stearic acid emulsion provided by the invention, a mixed emulsifier prepared from the emulsifier A and theemulsifier B is adopted; a preparation technology is simple and the waterborne stearic acid emulsion has a good dispersion effect and can be preserved and placed for long time.

Description

technical field [0001] The invention relates to the technical field of stearic acid, in particular to an aqueous stearic acid emulsion and a preparation method thereof. Background technique [0002] Stearic acid, namely octadecanoic acid, simple structural formula: CH 3 (CH 2 ) 16 COOH is widely used in cosmetics, plastic cold-resistant plasticizers, release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproofing agents, polishing agents, metal soaps, metal mineral flotation agents, softeners, pharmaceuticals and other organic chemicals. [0003] Because stearic acid is insoluble in water, it is necessary to add emulsifier and dispersant in the process of preparing aqueous stearic acid emulsion to achieve the dispersion effect. Even if the existing water-based stearic acid emulsion is added with an emulsifier and a dispersant, the dispersing effect is still not good, and it is easy to precipitate, and the phenomenon of flocculation and stratifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
CPCC09K23/018
Inventor 李英
Owner 广州正浩新材料科技有限公司
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