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Preparation method of octadecyl glucopyranoside

A technology of glucoside and octadecyl, used in the field of nonionic surfactant preparation, can solve the problems of long condensation reaction time, long reaction time, slow reaction speed, etc., to improve the reaction rate and reaction yield, reduce sugar The effect of side reactions, increasing conversion rate and rate

Active Publication Date: 2014-12-10
扬州晨化新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Since glucose is insoluble in stearyl alcohol and forms a solid-liquid two-phase, the condensation reaction carried out is a solid-liquid reaction, the reaction speed is slow, the reaction time is long, and the glucose is also easy to agglomerate, so that the glucose cannot be completely reaction, the reaction is difficult to complete
[0009] (2) Because the condensation reaction time is long, there is an acid catalyst in the condensation reaction system, and the dehydration condensation reaction between glucose and glucose dehydration are prone to occur, resulting in high impurity content in the product and dark color
[0010] (3) The currently reported one-step method for preparing stearyl glucoside all uses anhydrous glucose microparticles as raw materials, and the preparation cost is high
[0011] (4) Difficulty in process operation and control, low production efficiency and low yield
[0012] (5) Hydrogen peroxide is used as the oxidant for decolorization, the decolorization and bleaching effect is poor, and the decolorization stability is poor

Method used

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  • Preparation method of octadecyl glucopyranoside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The main process equipment is: stirring equipment, condensation reactor, decompression flash evaporation equipment, neutralization reactor, molecular distillation dealcoholization equipment, decolorization and impurity removal equipment, solid-liquid separation equipment, deployment and mixing equipment, etc., among which the condensation reactor is The jet flow chemical reactor, the decompression flash equipment is a flash tank, the neutralization reactor is a tank type stirred chemical reactor, the molecular distillation dealcoholization equipment is a molecular distillation equipment, and the decolorization and impurity removal equipment is a flat-plate electrochemical reactor. The stirring equipment is a tank reactor, and the mixing equipment is a mixing tank.

[0047] As shown in the figure, a method for preparing octadecyl glucoside is a method for preparing octadecyl glucoside aqueous solution as raw materials with stearyl alcohol and glucose, and the method steps...

Embodiment 2

[0058] Main process equipment is: basically the same as embodiment one, the difference is that the condensation reactor is an impingement flow chemical reactor, and the decolorization and impurity removal equipment is a fixed bed electrochemical reactor.

[0059] As shown in the figure, a method for preparing octadecyl glucoside is a method for preparing octadecyl glucoside aqueous solution as raw materials with stearyl alcohol and glucose, and the method steps are as follows:

[0060] (1) Preparation of sugar solution: 10 kg of water was added to the tank reactor, and then 10 kg of glucose was added thereto, and the mass ratio of glucose to water was 1.0: 1.0;

[0061] (2) Preheating and heating: heat the sugar liquid material obtained in the previous step to 90°C, and then keep it warm;

[0062] (3) Condensation reaction: The sugar solution preheated in the previous step and the alkyd mixture material that has been preheated to 170°C are respectively filtered to remove solid...

Embodiment 3

[0070] The main process equipment is: basically the same as in Example 1, the difference is that the condensation reactor is a plug-flow chemical reactor, and the decolorization and impurity removal equipment is a fluidized bed electrochemical reactor.

[0071] As shown in the figure, a method for preparing octadecyl glucoside is a method for preparing octadecyl glucoside aqueous solution as raw materials with stearyl alcohol and glucose, and the method steps are as follows:

[0072] (1) Preparation of sugar solution: 10 kg of water was added to the tank reactor, and then 9 kg of glucose was added thereto, and the mass ratio of glucose to water was 0.9: 1.0;

[0073] (2) Preheating and heating: heat the sugar liquid material obtained in the previous step to 100°C, and then keep it warm;

[0074] (3) Condensation reaction: The sugar solution preheated in the previous step and the alkyd mixture material that has been preheated to 185°C are respectively filtered to remove solid i...

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Abstract

The invention relates to a preparation method of octadecyl glucopyranoside. Octadecanol and glucose as raw materials are prepared into an octadecyl glucopyranoside aqueous solution. The preparation method comprises the following steps of 1, glucose liquid preparation, 2, pre-heating for temperature increasing, 3, a condensation reaction, 4, reduced pressure flashing, 5, pH value adjustment, 6, solid-liquid separation, 7, molecular distillation alcohol-removal, 8, decoloration purification, and 9, blending. The preparation method has the advantages that a process flow is reasonable; reaction time is short; a production cost is low; quality is stable; a yield is high; reaction processes are safe and reliable; favorable conditions of separation and refining of chemical reaction products are provided; conditions of process industrialization are provided; and the preparation method is simple, convenient and fast.

Description

technical field [0001] The invention relates to a method for preparing a nonionic surfactant, in particular to a method for preparing a non-ionic surfactant by using glucose and stearyl alcohol as raw materials through sugar solution preparation, preheating, condensation reaction, decompression and flash evaporation, pH value adjustment, and molecular distillation. The invention discloses a method for preparing stearyl glucoside through alcohol, decolorization and impurity removal, blending and mixing, and belongs to the technical field of fine chemicals. Background technique [0002] Alkyl glycoside, referred to as APG, is synthesized from renewable resources, natural fatty alcohol and glucose. It is a new type of non-ionic surfactant with comprehensive performance. Compatibility, low surface tension, strong wetting and detergency, rich and delicate foam, can be compounded with any type of surfactant, the synergistic effect is obvious, and it is non-toxic, harmless, and non...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/04C07H1/00C07H1/06
Inventor 于子洲许文林董晓红姚干兵姜海峰
Owner 扬州晨化新材料股份有限公司
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