Method for preparing alkyl glycoside

A technology for alkyl glycosides and glucose, applied in the field of preparation of alkyl glycosides, can solve the problems of expensive metal borohydride, unsuitable for industrial production and high production cost, and achieve the effects of low cost, good effect and mild reaction conditions

Inactive Publication Date: 2006-05-24
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent (CN 95118925.5) adopts water or the aqueous solution containing electrolyte to extract the unreacted glucose in the synthesis process, although solves the problem of reducing the residual sugar in the product like this, has caused unnecessary waste of sugar, and the process is loaded down with trivial details, has not fundamentally solve the problem
However, metal borohydrides are expensive and expensive to produce, making them unsuitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In 100 liters of reactors, add 14kg of glucose (particle diameter 50 μm) containing one water of crystallization after ultramicronization treatment, C 8～10 Mixed fatty alcohols (which contain C 8 Alcohol 40%, C 10 Alcohol 60%) 56kg and ethyl sulfoacetate 240g, start stirring and heating, under 30mmHg vacuum degree, control the temperature in the still 50 ℃, maintain 0.5 hour. Then continuously increase the reaction temperature to 105°C, keep it for 1.5 hours, pass cooling water to reduce the temperature in the kettle to 80°C, add 230g of trisodium citrate, stir for 15 minutes, filter to obtain 210g of residue (sodium sulfonic acid salt), and the mother liquor is light Yellow alkyl glycoside alcohol solution.

[0029] Pour the above-mentioned alkyl glucoside alcohol solution into a distillation kettle or a thin film evaporator. Under a vacuum degree of 2mmHg, control the temperature in the kettle to 70-150°C, and distill the excess higher fatty alcohol. The distillatio...

Embodiment 2

[0032] In 100 liters of reactors, add 14kg of glucose (particle diameter 75 μm) containing a water of crystallization after ultramicronization treatment, C 8～10 Mixed fatty alcohols (which contain C 8 Alcohol 40%, C 10 Alcohol 60%) 56kg and ethyl sulfoacetate 240g, start stirring and heating, under 30mmHg vacuum degree, control the temperature in the still 50 ℃, maintain 0.5 hour. Then continuously increase the reaction temperature to 105°C, keep it for 1.5 hours, pass cooling water to lower the temperature in the kettle to 80°C, add 230 g of trisodium citrate, and stir for 15 minutes to obtain a light yellow alkyl glycoside alcohol solution.

[0033] Pour the above-mentioned alkyl glucoside alcohol solution into a distillation kettle or a thin film evaporator. Under a vacuum degree of 2mmHg, control the temperature in the kettle to 70-150°C, and distill the excess higher fatty alcohol. The distillation is completed in about 2 hours, and the temperature in the kettle The tem...

Embodiment 3

[0036] In 100 liters of reactors, add 14kg of glucose (particle diameter 150 μm) containing a water of crystallization after ultramicronization treatment, C 8～10 Mixed fatty alcohols (which contain C 8 Alcohol 40%, C 10 Alcohol 60%) 56kg and ethyl sulfoacetate 240g, start stirring and heating, under 30mmHg vacuum degree, control the temperature in the still 50 ℃, maintain 0.5 hour. Then continuously increase the reaction temperature to 105°C, keep it for 1.5 hours, pass cooling water to lower the temperature in the kettle to 80°C, add 230g of trisodium citrate, stir for 15 minutes, filter to obtain 810g of residue (sodium sulfonic acid salt), and the mother liquor is light Yellow alkyl glycoside alcohol solution.

[0037] Pour the above-mentioned alkyl glucoside alcohol solution into a distillation kettle or a thin film evaporator. Under a vacuum degree of 2mmHg, control the temperature in the kettle to 70-150°C, and distill the excess higher fatty alcohol. The distillation ...

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Abstract

The invention discloses a new method for preparing alkyl indicant, technically characterized in making ultramicro pulverization processing on anhydrous glucose or crystal water containing glucose, then reacting with C8-C20 high grade alcohol under the existence of organic sulphonic acid catalyst, vacuum dehydrating and obtaining alcohol solution of alkyl indicant, then neutralizing acdic catalyst with organic acid sodium or potassium salt, vacuum distilling to eliminate excessive high grade alcohol, using chelating agent or sodium silicate to screen Fe ions, Mn ions and other ions, using tetraacetyl ethylene diamine as oxydol activating agent, bleaching alkyl indicant solution, and finally using hydrogen peroxide enzyme to eliminate the residual hydrogen peroxide from the products. The advantages of the invention: the reaction temperature is low and the reacting time is short, the process is simple and convenient, the production cost is low, and the prepared alkyl indicant is colorless or approximately colorless, transparent, peculiar smell-free, and stable to store.

Description

technical field [0001] The invention belongs to the preparation of alkyl glycosides, in particular to a novel method for preparing alkyl glycosides in one step. Background technique [0002] Alkyl glucoside is a new type of high-efficiency, non-toxic, biodegradable non-ionic surfactant with low surface tension, strong foaming power, rich foam, good wettability, good compatibility, low irritation to human body, and extremely low toxicity , can rapidly biodegrade. In addition to being used to prepare cleaning agents, alkyl glycosides can also be used as emulsifiers, wetting agents, dispersants and dustproof agents. In recent years, it has achieved good application results in pesticide emulsifiers. Alkyl glycosides are also used in tertiary oil recovery, and have the characteristics of high temperature resistance, alkali resistance and mineral salt resistance. It can also be used to solve the problem of air pollution caused by mining of metal minerals. [0003] There are two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/00B01J31/02C07H15/04
Inventor 刘毅锋张娟
Owner NORTHWEST UNIV(CN)
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