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Water-based stearamide emulsion and preparation method thereof

A technology of stearic acid amide and emulsion, which is applied in the direction of defoamer, anti-biological agent addition, coating, etc., can solve the problems of easy precipitation, high production cost, flocculation and stratification, etc., to save production cost and simplify production The effect of strong process and 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 amide emulsion is added with emulsifier and dispersant, 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 amide 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 amide emulsion

[0028] Composition in parts by weight of raw materials: 45 parts of stearic acid amide; 6 parts of emulsifier A; 14 parts of emulsifier B; 0.8 parts of defoamer; 0.5 parts of preservative; 60 parts of water.

[0029] Described defoamer selects polyoxyethylene polyoxypropanolamine ether for use; Described preservative selects sodium dehydroacetate for use; Described emulsifier A is selected from sorbitan monolaurate; 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-oc...

Embodiment 2

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

[0037] Composition in parts by weight of raw materials: 30 parts of stearic acid amide; 5 parts of emulsifier A; 10 parts of emulsifier B; 0.5 parts of defoamer; 0.2 parts of preservative; 50 parts of water.

[0038] Described defoamer selects polyoxyethylene polyoxypropanolamine ether for use; Described preservative selects sodium dehydroacetate for use; Described emulsifier A is selected from sorbitan monolaurate; 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 60°C, and the reaction was stirred for 3 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-oc...

Embodiment 3

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

[0046] Composition in parts by weight of raw materials: 60 parts of stearic acid amide; 8 parts of emulsifier A; 15 parts of emulsifier B; 1 part of defoamer; 0.5 parts of preservative;

[0047] Described defoamer selects polyoxyethylene polyoxypropanolamine ether for use; Described preservative selects sodium dehydroacetate for use; Described emulsifier A is selected from sorbitan monolaurate; 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 50°C, and the reaction was stirred for 5 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 30°C for 3 hours, and wash the product to obtain the emulsifier B;

[0050] The molar ratio of 11-trans-octadecenoic acid and th...

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Abstract

The invention relates to the technical field of stearamide, and particularly discloses a water-based stearamide emulsion and a preparation method thereof. The water-based stearamide emulsion is prepared from the following raw materials and components in parts by weight: 30 to 60 parts of stearamide, 5 to 10 parts of emulsifier A, 10 to 15 parts of emulsifier B, 0.1 to 2 parts of defoaming agent, 0.1 to 2 parts of preservative, and 40 to 1000 parts of water. The water-based stearamide emulsion has the advantage that by adopting the mixed emulsifier of emulsifier A and emulsifier B, the preparation technology is simple, the dispersing effect is good, and the water-based stearamide emulsion can be stored for a long time.

Description

technical field [0001] The invention relates to the technical field of stearic acid amide, in particular to an aqueous stearic acid amide emulsion and a preparation method thereof. Background technique [0002] Stearic acid amide, also known as octadecylamide, has a chemical formula of CH 3 (CH 2 ) 16 CONH 2 White solid, miscible with paraffin, soluble in organic solvents, insoluble in water. Stearic acid amide emulsion is usually combined with zinc stearate emulsion to be used in thermal paper coating as thermal paper sensitizer. [0003] Because stearic acid amide is insoluble in water, it is necessary to add emulsifier and dispersant in the process of preparing aqueous stearic acid amide emulsion to achieve the dispersion effect. Even if the existing water-based stearic acid amide emulsion is added with an emulsifier and a dispersant, the dispersion effect is not good, and it is easy to precipitate, and the phenomenon of flocculation and stratification will occur whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H21/12D21H21/36D21H21/14
CPCD21H19/14D21H21/12D21H21/14D21H21/36
Inventor 李英
Owner 广州正浩新材料科技有限公司
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