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Gemini phosphate surfactant and preparation method thereof

A surfactant and phosphoric acid ester technology, applied in the chemical industry, can solve the problems of complex preparation process, and achieve the effect of reducing cost and strong atomic economy

Inactive Publication Date: 2017-06-13
肇庆市稳固化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is complicated and sodium chloride is produced in the last two steps of the reaction

Method used

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  • Gemini phosphate surfactant and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) 1molPOCl has been added in advance 3 In the reactor 1#, slowly add 1mol C8-C10 fatty alcohol dropwise, control the drop rate to maintain the reaction at 15°C, after the dropwise addition, start the 4kPa decompression condition, and slowly raise the temperature to 25°C to continue the reaction for 3h, then add 2mol water dropwise , maintained at 25°C for 1h hydrolysis reaction to obtain alkyl phosphate monoester.

[0037] (2) The hydrogen chloride gas by-product of step (1) is pumped into the reactor 2# under reduced pressure conditions, and the 1mol glycerol added in advance is carried out chlorination reaction at 115° C. for 4 hours under the action of the Sokalan DCS catalyst accounting for 6% of glycerol weight. After the chlorination is completed, start the vacuum distillation column, control the temperature of the kettle to 130°C, and the temperature of the tower top to 95°C, and collect the distillate to obtain dichloroglycerin.

[0038](3) Add the alkyl phos...

Embodiment 2

[0041] Alkyl phosphate monoester and dichloroglycerin are prepared in the same manner as in Example 1, the difference is that (3) the alkyl phosphate monoester obtained in step (1) is added to reactor 3#, and 1mol tetraethyl Ammonium hydroxide was used for neutralization reaction, followed by adding 0.5 mol of dichloroglycerol obtained in step (2) to react as a linking group to generate Gemini phosphate surfactant with a yield of 87.4%.

Embodiment 3

[0043] (1) 1molPOCl has been added in advance 3 In the reactor 1#, slowly add 1mol C12-C14 fatty alcohol dropwise, control the drop rate to maintain the reaction at 15°C, after the dropwise addition, start the 4kPa decompression condition, and slowly raise the temperature to 30°C to continue the reaction for 2h, then add 2mol water dropwise , maintained at 40 ° C for 2h hydrolysis to obtain alkyl phosphate monoester.

[0044] (2) The hydrogen chloride gas by-product of step (1) is pumped into the reactor 2# under reduced pressure, and the 1mol glycerol added in advance is carried out chlorination reaction at 100° C. for 5 h under the action of the Sokalan DCS catalyst accounting for 10% of glycerol weight. After the chlorination is completed, start the vacuum distillation column, control the temperature of the kettle to 135°C, and the temperature of the tower top to 100°C, and collect the distillate to obtain dichloroglycerin.

[0045] (3) Add the alkyl phosphate monoester ob...

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PUM

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Abstract

The invention discloses a preparation method of a Gemini phosphate surfactant. The method comprises the following steps: (1) obtaining alkyl phosphomonoester and a hydrogen chloride gas from fatty alcohol and POCl3; (2) carrying out catalytic chlorination on the hydrogen chloride gas obtained in the step (1) and glycerin to obtain glycerin dichlorohydrin; and (3) carrying out neutralization reaction on the alkyl phosphomonoester obtained in the step (1) and a quaternary ammonium base and then adding the glycerin dichlorohydrin obtained in the step (2) to obtain the Gemini phosphate surfactant. The preparation method of the Gemini phosphate surfactant, disclosed by the invention, is high in yield and simple in preparation flow. Meanwhile, the invention further provides the Gemini phosphate surfactant.

Description

technical field [0001] The invention relates to the field of chemical engineering, and more specifically relates to a Gemini phosphate surfactant and a preparation method thereof. Background technique [0002] In recent years, green energy biodiesel and its chemical utilization have developed rapidly, and the development of biodiesel has brought a large amount of cheap glycerin, which makes the glycerin-based epichlorohydrin project very economical and has become a hot spot for research, development and investment. In short, the production of epichlorohydrin from biodiesel by-product glycerol is a low-energy and environmentally friendly production process, and it will be the mainstream direction and main source of epichlorohydrin production in the future. However, the most important raw material of the glycerol-based epichlorohydrin process is hydrogen chloride gas, and only with a stable and continuous supply of hydrogen chloride gas can the normal production of glycerin-ba...

Claims

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Application Information

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IPC IPC(8): C07F9/40C07F9/11C07C29/62C07C31/36C07D301/26C07D303/08B01F17/14B01F17/18C09K23/14C09K23/18
CPCC07C29/62C07D301/26C07D303/08C07F9/11C07F9/4006C07F9/4075C09K23/14
Inventor 邱伙生黄家龙姜文青
Owner 肇庆市稳固化工有限公司
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