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Preparation method of polyol glucoside

A technology of glucoside and polyol, which is applied in the field of preparation of polyol glucoside, can solve problems such as difficulties in the distillation process, and achieve the effect of strong water-locking performance

Active Publication Date: 2011-01-19
YANCHENG CITY CHUNZHU AROMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These methods may have certain technical defects. For example, for the solvent method, when synthesizing glycerol glucoside, due to the high boiling point of glycerol, if an excessive amount of glycerin is used as a solvent, it will cause difficulties in the subsequent distillation process.

Method used

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  • Preparation method of polyol glucoside
  • Preparation method of polyol glucoside
  • Preparation method of polyol glucoside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 16.7kg of glycerin to the reaction pot, stir and heat to 130°C, then add 8.2kg of glucose monohydrate, at this time the temperature in the pot drops to 90°C, quickly add 0.176kg of phosphoric acid, and then vacuumize and reduce the pressure in the pot Reduce the pressure to 0.09MPa, continue heating to raise the temperature in the pot to 100°C, and keep it at this temperature. When the water output in the pot reaches 1.2kg, stop heating, cool the reaction system to 80°C with a cold water bath, and then add 0.255kg 60wt% potassium hydroxide aqueous solution neutralizes the acid catalyst to make the product weakly alkaline, and the pH value measured is 8. Continue cooling to room temperature to obtain a nearly colorless and transparent product. Glycosides are predominant and contain relatively high levels of unreacted glucose.

Embodiment 2

[0035] Add 16.7kg of glycerin to the reaction pot, stir and heat to 130°C, add 8.2kg of glucose monohydrate, at this time the temperature in the pot drops to 90°C, quickly add 0.176kg of phosphoric acid, then vacuumize and reduce the pressure in the pot Drop to 0.09MPa, continue heating to make the temperature in the pot rise to 100°C, and keep it at this temperature. When the water output in the pot reaches 1.2kg, stop heating. The difference from Example 1 is that 0.255 kg 60wt% potassium hydroxide aqueous solution neutralizes the acid catalyst, makes the product weakly alkaline, cools to room temperature, and obtains a light amber product, which is mainly based on glyceryl-glucoside and contains higher The amount of unreacted glucose. Analysis results see figure 1 .

[0036] figure 1 It is the high-efficiency liquid chromatography analysis figure of embodiment 2, and wherein, the horizontal axis represents the peak time of each component, i.e. retention time t; Retentio...

Embodiment 3

[0042] Add 16.7kg of glycerin to the reaction tank, heat it to 130°C under stirring, add 8.2kg of glucose monohydrate, at this time, the temperature in the tank drops to 90°C, quickly add 0.176kg of phosphoric acid, then reduce the pressure to 0.09MPa, and continue heating to 130°C, kept at this temperature, when the water yield reached 1.2kg, stop heating, cool the reaction system to 80°C with a cold water bath, then add 0.255kg 60wt% potassium hydroxide aqueous solution to neutralize the acid catalyst, until the pH value is 7, Continue to cool to room temperature, the color of the obtained product is almost colorless and transparent, and through high-performance liquid chromatography analysis, the content of glucose is relatively low, indicating that the raw material glucose is running out, and the glyceryl monoglucoside and glyceryl diglucoside in the product The content is equivalent.

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Abstract

The invention relates to a preparation method of polyol glucoside, which mainly comprises the following steps: adding glycerol and glucose monohydrate into a reactor in a heating state; then, cooling, adding an acid catalyst, and then decompressing to enable a reaction system to be maintained at high temperature for a certain time; and after water flows out of the reaction system, adding an acid neutralizing agent until the reaction system is weakly alkaline to obtain a product.

Description

【Technical field】 [0001] The invention relates to the technical field of organic compound preparation. More particularly, the present invention relates to a kind of preparation method of polyol glucoside. 【Background technique】 [0002] Polyol glucoside is a commonly used compound, and its main use is, for example, as humectant, humectant, surfactant, etc. Among them, because it has both moisture absorption and moisturizing functions, as well as low toxicity and low irritation, it can also be used as a cosmetic emulsifier and moisturizer, and is also widely used as a moisturizer for tobacco in the tobacco industry. Glycerin is the most common humectant in cosmetics at present, or ethylene glycol glucoside is used instead of glycerin as humectant. The moisture absorption and moisturizing properties of the three formulations of cream, moisturizing cream and shampoo were tested, and the results showed that β-ethylene glycol glucoside was superior to glycerin as a humectant, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/04C07H1/00
Inventor 蒋思翠施友钟伍阳罗昌荣
Owner YANCHENG CITY CHUNZHU AROMA
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