Waterborne calcium stearate emulsion and preparation method thereof

Abstract

The invention relates to the technical field of calcium stearate and particularly discloses waterborne calcium stearate emulsion and a preparation method thereof. The waterborne calcium stearate emulsion is prepared from, by weight, 25-60 parts of calcium stearate, 10-20 parts of an emulsifying agent, 0.1-1 part of a defoaming agent, 0.1-1 part of preservatives and 40-70 parts of water. The waterborne calcium stearate emulsion is simple in production process, excellent in dispersion effect and available for long-time storage and placement.

Description

technical field

[0001] The invention relates to the technical field of calcium stearate, in particular to an aqueous calcium stearate emulsion and a preparation method thereof. Background technique

[0002] Calcium stearate emulsion is a product with the molecular formula Ca(C 17 h 35 COO) 2 It is a white viscous liquid and is a lubricant with excellent performance. It can be used in fields such as starch, casein or emulsion paint. Because calcium stearate is insoluble in water, it is necessary to add emulsifier and dispersant in the process of preparing aqueous calcium stearate emulsion to achieve the dispersion effect. Even if the existing water-based calcium stearate 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 when it is left for a long time. In addition, the existing method requires high-speed stirring and grinding under heati...

Examples

Embodiment 1

[0026] The preparation of embodiment 1 aqueous calcium stearate emulsion

[0027] Composition in parts by weight of raw materials: 38 parts of calcium stearate; 15 parts of emulsifier; 0.5 part of polyoxyethylene polyoxypropanolamine ether; 0.3 part of methyl p-hydroxybenzoate; 50 parts of water;

[0028] Described emulsifying agent is prepared by following method:

[0029] (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 3 hours to obtain 11-trans-octadecenoic acid chloride;

[0030] (2) adding sorbitol and sinapyl alcohol to the acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 35°C for 2 hours, washing the product to obtain the emulsifier;

[0031] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:1.8;

[0032] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic acid...

Embodiment 2

[0035] The preparation of embodiment 2 aqueous calcium stearate emulsions

[0036] Composition in parts by weight of raw materials: 25 parts of calcium stearate; 10 parts of emulsifier; 0.3 part of polyoxyethylene polyoxypropanolamine ether; 0.5 part of methyl p-hydroxybenzoate; 40 parts of water;

[0037] Described emulsifying agent is prepared by following method:

[0038] (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;

[0039] (2) adding sorbitol and sinapyl alcohol to the acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 30°C for 3 hours, washing the product to obtain the emulsifier;

[0040] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:1.5;

[0041] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic aci...

Embodiment 3

[0044] The preparation of embodiment 3 aqueous calcium stearate emulsion

[0045] Composition in parts by weight of raw materials: 55 parts of calcium stearate; 15 parts of emulsifier; 0.5 part of polyoxyethylene polyoxypropanolamine ether; 0.5 part of methyl p-hydroxybenzoate; 60 parts of water;

[0046] Described emulsifying agent is prepared by following method:

[0047] (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 4 hours to obtain 11-trans-octadecenoic acid chloride;

[0048] (2) adding sorbitol and sinapyl alcohol to acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 40° C. for 1.5 h, washing the product to obtain the emulsifier;

[0049] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:2;

[0050] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic acid chlor...

technical field

[0001] The invention relates to the technical field of calcium stearate, in particular to an aqueous calcium stearate emulsion and a preparation method thereof. Background technique

[0002] Calcium stearate emulsion is a product with the molecular formula Ca(C 17 h 35 COO) 2 It is a white viscous liquid and is a lubricant with excellent performance. It can be used in fields such as starch, casein or emulsion paint. Because calcium stearate is insoluble in water, it is necessary to add emulsifier and dispersant in the process of preparing aqueous calcium stearate emulsion to achieve the dispersion effect. Even if the existing water-based calcium stearate 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 when it is left for a long time. In addition, the existing method requires high-speed stirring and grinding under heati...

Examples

Embodiment 1

[0026] The preparation of embodiment 1 aqueous calcium stearate emulsion

[0027] Composition in parts by weight of raw materials: 38 parts of calcium stearate; 15 parts of emulsifier; 0.5 part of polyoxyethylene polyoxypropanolamine ether; 0.3 part of methyl p-hydroxybenzoate; 50 parts of water;

[0028] Described emulsifying agent is prepared by following method:

[0029] (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 3 hours to obtain 11-trans-octadecenoic acid chloride;

[0030] (2) adding sorbitol and sinapyl alcohol to the acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 35°C for 2 hours, washing the product to obtain the emulsifier;

[0031] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:1.8;

[0032] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic acid...

Embodiment 2

[0035] The preparation of embodiment 2 aqueous calcium stearate emulsions

[0036] Composition in parts by weight of raw materials: 25 parts of calcium stearate; 10 parts of emulsifier; 0.3 part of polyoxyethylene polyoxypropanolamine ether; 0.5 part of methyl p-hydroxybenzoate; 40 parts of water;

[0037] Described emulsifying agent is prepared by following method:

[0038] (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;

[0039] (2) adding sorbitol and sinapyl alcohol to the acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 30°C for 3 hours, washing the product to obtain the emulsifier;

[0040] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:1.5;

[0041] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic aci...

Embodiment 3

[0044] The preparation of embodiment 3 aqueous calcium stearate emulsion

[0045] Composition in parts by weight of raw materials: 55 parts of calcium stearate; 15 parts of emulsifier; 0.5 part of polyoxyethylene polyoxypropanolamine ether; 0.5 part of methyl p-hydroxybenzoate; 60 parts of water;

[0046] Described emulsifying agent is prepared by following method:

[0047] (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 4 hours to obtain 11-trans-octadecenoic acid chloride;

[0048] (2) adding sorbitol and sinapyl alcohol to acetone solution, then adding 11-trans-octadecenoic acid chloride, reacting at 40° C. for 1.5 h, washing the product to obtain the emulsifier;

[0049] The molar ratio of 11-trans-octadecenoic acid and thionyl chloride described in step (1) is 1:2;

[0050] In step (2), the molar ratio of sorbitol, sinapyl alcohol and 11-trans-octadecenoic acid chlor...