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Preparation method of oil-in-water self-emulsifying agent

A self-emulsifier, oil-in-water technology, used in chemical instruments and methods, transportation and packaging, chemical/physical processes, etc., can solve problems such as poor product stability, limited emulsification range, and delamination, and achieve strong stability. , good spreading effect

Inactive Publication Date: 2020-07-10
广州市加中榕科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current emulsifiers need to be compounded with emulsification aids, emulsification stabilizers, and used in conjunction with other emulsifiers. They are not easy to thicken, and the emulsification range is not wide. Most of the products produced have poor stability, especially high temperature resistance. Demulsification, delamination, and even discoloration can occur

Method used

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  • Preparation method of oil-in-water self-emulsifying agent
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Examples

Experimental program
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Effect test

Embodiment 1

[0020] A preparation method of oil-in-water self-emulsifier, comprising the steps of:

[0021] (1) Add 3 parts of stearic acid and 0.2 parts of molecular sieve to 9 parts of glycerin, heat to 70°C, undergo esterification reaction to obtain crude glycerol stearate, spray dry the crude product to obtain glyceryl stearate;

[0022] (2) React 8 parts of stearic acid, 10 parts of polyethylene glycol and 0.3 parts of nickel at 120°C for 3 hours to generate PEG-100 stearate crude product through esterification reaction, dehydrate the crude product, and spray dry it. Obtain PEG-100 stearate;

[0023] (3) Add 3 parts of glycerol stearate and 7 parts of PEG-100 stearate into the reaction kettle, heat to 90°C, stir for 50 minutes, add 9 parts of ethanol, mix well, concentrate under reduced pressure again, and steam out ethanol, filtered, and dried to obtain the oil-in-water self-emulsifier.

Embodiment 2

[0025] A preparation method of oil-in-water self-emulsifier, comprising the steps of:

[0026] (1) Add 4 parts of stearic acid and 0.1 part of molecular sieve to 6 parts of glycerin, heat to 80°C, undergo esterification reaction to obtain crude glycerol stearate, spray dry the crude product to obtain glyceryl stearate;

[0027] (2) React 6 parts of stearic acid, 12 parts of polyethylene glycol and 0.2 parts of nickel at 140°C for 2 hours, esterification reaction occurs to generate PEG-100 stearate crude product, dehydrate the crude product, spray dry, Obtain PEG-100 stearate;

[0028] (3) Add 4 parts of glycerol stearate and 6 parts of PEG-100 stearate into the reaction kettle, heat to 100°C, stir for 40 minutes, add 10 parts of ethanol, mix well, concentrate under reduced pressure again, and steam out ethanol, filtered, and dried to obtain the oil-in-water self-emulsifier.

Embodiment 3

[0030] A preparation method of oil-in-water self-emulsifier, comprising the steps of:

[0031] (1) Add 2 parts of stearic acid and 0.3 parts of molecular sieve to 12 parts of glycerin, heat to 60°C, undergo esterification reaction to obtain crude glycerol stearate, spray dry the crude product to obtain glyceryl stearate;

[0032] (2) React 10 parts of stearic acid, 8 parts of polyethylene glycol and 0.4 parts of nickel at 100°C for 4 hours to generate PEG-100 stearate crude product through esterification reaction, dehydrate the crude product, and spray dry it. Obtain PEG-100 stearate;

[0033] (3) Add 2 parts of glycerol stearate and 8 parts of PEG-100 stearate into the reaction kettle, heat to 80°C, stir for 60 minutes, add 8 parts of ethanol, mix well, concentrate again under reduced pressure, and steam out ethanol, filtered, and dried to obtain the oil-in-water self-emulsifier.

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Abstract

The invention discloses a preparation method of an oil-in-water self-emulsifying agent, and the preparation method of the oil-in-water self-emulsifying agent comprises the following steps: (1) preparing glyceryl stearate; (2) preparing PEG-100 stearate; and (3) adding the glyceryl stearate and the PEG-100 stearate into a reaction kettle, heating and stirring, adding ethanol, uniformly mixing, concentrating under reduced pressure again, evaporating out ethanol, filtering and drying to obtain the oil-in-water self-emulsifying agent. A product prepared from the oil-in-water self-emulsifying agentis good in spreadability, fine, smooth, bright and high in stability, and has certain corrosion resistance.

Description

technical field [0001] The invention relates to the field of surfactants, in particular to a preparation method of an oil-in-water self-emulsifier. Background technique [0002] Surfactant, also known as surfactant, is a substance that can significantly change the surface tension of a liquid or the interfacial tension between two phases. In the liquid, it gathers on the interface between the liquid and another phase, forming a thin molecular film, so that the concentration in the surface layer of the solution is much higher than that in the solution, so that its surface tension is greatly reduced, and wetting, emulsification, Dispersion, foaming and other functions. [0003] Emulsifier is a substance that can improve the surface tension between the various constituent phases in the emulsion to form a uniform and stable dispersion system or emulsion. Emulsifier is a surface-active substance with both hydrophilic and lipophilic groups in its molecule. It gathers on the oil / w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/44B01F17/00C09K23/44C09K23/00
CPCC09K23/018
Inventor 王红娟
Owner 广州市加中榕科技有限公司
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