Preparation method for polyoxyethylene mono-caprylic-capric acid glyceride

A technology of glyceryl caprylate and polyoxyethylene, which is applied in the field of synthesis of nonionic surfactants in organic chemistry, can solve the problems of large environmental pollution, dark color, troublesome process, etc., and achieve simple reaction equipment and no pollution , the effect of convenient operation

Active Publication Date: 2012-11-21
ZHEJIANG HUANGMA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology provides technical benefits that include improved efficiency during production processes for producing high-purity polyglyceryl fatty acids (PGFAs). It involves simpler process steps compared to existing techniques while also providing better results due to its ability to produce highly pure PGFA without causing environmental concerns such as waste water or harmful chemicals produced from traditional organics used in industrial manufacturing procedures.

Problems solved by technology

Technics: POLYOXYMONIC ACID GLONCERAGLIDE LUTAMINE CAPE KEGANS NEWS describes how different types of chemical substances like polyglycidols are found naturally occurring compounds on plants called phyllosans or algae cells. These natural materials have many benefits such as being effective at breaking down oil into smaller molecules while also having excellent water repelling characteristics. They may help improve their effectiveness when added directly without affecting them chemistry. However, they often lose some beneficial qualities during storage due to volatility caused by oxygen absorption from atmospheres' moieties containing chlorine atoms. To solve these issues, researchers developed special techniques involving reactants made of specific ingredients.

Method used

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  • Preparation method for polyoxyethylene mono-caprylic-capric acid glyceride
  • Preparation method for polyoxyethylene mono-caprylic-capric acid glyceride

Examples

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Effect test

Embodiment 1

[0015] 1) Esterification reaction: Add 644 grams of glycerin and 1036 grams of caprylic acid into a 2L flask by weight, add 0.336 grams of solid catalyst stannous chloride under stirring, slowly raise the temperature, and separate the esterification reaction in time under the condition of nitrogen flow The generated water was heated up to 180°C under the reaction conditions, kept warm for 3.0 hours, then cooled to 60°C, and discharged. The conversion rate of the acid was 99.9%.

[0016] 2) Purification of monocaprylic capric acid ester: use a rotary scraper thin film evaporator to collect about 700 grams of monocaprylic capric acid glycerides in light fractions at a temperature of 130 ° C and a pressure of 8 Pa, and the other fraction is dicaprylic capric acid glycerides by-product .

[0017] 3) Condensation reaction of ethylene oxide: Add 400 grams of monocaprylic capric acid glyceride into a 2L addition kettle, stir and add 7.6 grams of potassium hydroxide, replace with nitr...

Embodiment 2

[0020] 1) Esterification reaction: Add 644 grams of glycerin and 1085 grams of caprylic acid into a 2L flask by weight, add 0.5187 grams of solid catalyst stannous oxide under stirring, slowly raise the temperature, and separate out the esterification reaction in time under the condition of nitrogen flow. The water was heated up to 150°C under the reaction conditions, and kept for 6.0 hours, then cooled to 50°C and discharged, and the conversion rate of the acid was 99.8%.

[0021] 2) Purification of monocaprylic capric acid ester: use a rotary scraper film evaporator to collect about 750 grams of monocaprylic capric acid glycerides in light fractions at a temperature of 140 ° C and a pressure of 10 Pa, and the other fraction is dicaprylic capric acid glycerides by-product .

[0022] 3) Condensation reaction of ethylene oxide: add 400 grams of monocaprylic capric acid glyceride into a 2L addition kettle, stir and add 3.6 grams of sodium hydroxide, replace nitrogen three times ...

Embodiment 3

[0025] 1) Esterification reaction: Add 644 grams of glycerin and 1141 grams of caprylic acid in a 2L flask by weight, add 0.7140 grams of solid catalyst stannous chloride under stirring, slowly raise the temperature, and separate the esterification reaction in time under the condition of nitrogen flow The generated water was heated up to 160°C under the reaction conditions, kept warm for 5.0 hours, then cooled down to 70°C, and discharged. The conversion rate of the acid was 99.99%.

[0026] 2) Purification of monocaprylic acid ester: use a rotary scraper film evaporator to collect about 790 grams of monocaprylic acid glycerides in light fractions at a temperature of 135 ° C and a pressure of 12 Pa, and the other fraction is dicaprylic capric acid glycerides by-product .

[0027] 3) Ethylene oxide condensation reaction: Add 400 grams of monocaprylic capric acid glyceride into a 2L addition kettle, stir and add 2.4 grams of sodium hydroxide, replace nitrogen three times and the...

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Abstract

The invention discloses a preparation method for polyoxyethylene mono-caprylic-capric acid glyceride. The preparation method comprises the following steps of: 1) esterification reaction: glycerol and caprylic-capric acid are taken as raw materials, a solid catalyst is added, water is separated from the mixture under nitrogen flow, a temperature is increased to 150 DEG C to 180 DEG C, heat is preserved for 3-6 hours, and the temperature is decreased at 50 DEG C to 70 DEG C; 2) purification of mono-caprylic-capric acid ester; and 3) condensation reaction of ethylene oxide: mono-caprylic-capric acid ester after purification is taken as the raw material, an alkaline catalyst is added, nitrogen is substituted, the temperature is increased to 100 DEG C to 120 DEG C, after 20-40 minutes, ethylene oxide is slowly led into for 3-5 hours, after the addition is finished, processes of aging, pressure reduction, temperature lowering and degassing are carried out, and the product is obtained after the discharging. The preparation method has the characteristics of reasonable process, high product purity and good use performance.

Description

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Claims

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Application Information

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Owner ZHEJIANG HUANGMA TECH
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