Preparation method of polyglycerol fatty acid ester

A fatty acid ester and polyglycerol technology, which is applied in the direction of fatty acid esterification, can solve the problems affecting the application of polyglycerol fatty acid ester, the poor quality of polyglycerol fatty acid ester products, and the poor quality of polyglycerol, so as to achieve easy large-scale Industrial production, low production cost, strong emulsifying ability

Active Publication Date: 2019-04-16
广州美晨科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor quality of polyglycerol, resulting in the poor quality of polyglycerol fatty acid ester products, this has seriously affected the application of polyglycerol fa...

Method used

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  • Preparation method of polyglycerol fatty acid ester
  • Preparation method of polyglycerol fatty acid ester
  • Preparation method of polyglycerol fatty acid ester

Examples

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Effect test

Embodiment 1

[0025] A preparation method of polyglycerol fatty acid ester, comprising the following steps:

[0026] (1) Add 500kg glycerin to the reaction kettle, start stirring, heat to 150°C under the condition of vacuum degree of 0.05MPa, then add 2kg KF-SnCl 2 / Al 2 o 3 Supported solid base catalyst, continue to heat up to 230 ° C, heat preservation reaction for 2 hours and 45 minutes to prepare mixed polyglycerol;

[0027] (2) Add the mixed polyglycerol to the cooling tank, start stirring, cool down to 160°C, filter and add to the storage tank, and then add molecular distillation equipment for molecular distillation, wherein the first-stage molecular distillation controls the temperature at 170°C, and the vacuum degree is 10Pa; The secondary molecular distillation controlled the temperature at 210°C and the vacuum at 5Pa, collected the distilled polyglycerol, and obtained 390kg of triglycerol;

[0028] (3) According to stearic acid: polyglycerol (molar ratio) = 1.3:1, heat 600kg of...

Embodiment 2

[0032] A preparation method of polyglycerol fatty acid ester, comprising the following steps:

[0033] (1) Add 500kg glycerin to the reaction kettle, start stirring, heat to 140°C under the condition of vacuum degree of 0.06MPa, then add 2kg KF-SnCl 2 / Al 2 o 3 Supported solid base catalyst, heating up to 240°C, heat preservation reaction for 4 hours to prepare mixed polyglycerol;

[0034](2) Add the mixed polyglycerol to the cooling tank, start stirring, cool down to 160°C, filter and add to the storage tank, and then add molecular distillation equipment for molecular distillation, wherein the first-stage molecular distillation controls the temperature at 195°C, and the vacuum degree is 5Pa; The temperature of the secondary molecular distillation is controlled at 220°C and the vacuum degree is 1Pa, and the distilled polyglycerol is collected to obtain 395kg of tetrapolyglycerol;

[0035] (3) According to stearic acid: polyglycerol (molar ratio) = 1.3:1, heat 460kg of stear...

Embodiment 3

[0038] A preparation method of polyglycerol fatty acid ester, comprising the following steps:

[0039] (1) Add 500kg glycerin to the reaction kettle, start stirring, heat to 180°C under the condition of vacuum degree of 0.07MPa, then add 1.5kg KF-SnCl 2 / Al 2 o 3 Supported solid base catalyst, continue to heat up to 230 ° C, heat preservation reaction for 2 hours and 45 minutes to prepare mixed polyglycerol;

[0040] (2) Add the mixed polyglycerol to the cooling tank, start stirring, cool down to 150°C, then filter and add to the storage tank, and then add molecular distillation equipment for molecular distillation, in which the first-stage molecular distillation controls the temperature at 170°C and the vacuum degree is 30Pa ; Secondary molecular distillation control temperature is 210 ℃, vacuum degree is 3Pa, collects the distilled polyglycerol, obtains tripolyglycerol 394kg;

[0041] (3) According to oleic acid:polyglycerol (molar ratio)=1.3:1, 600kg oleic acid is added ...

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Abstract

The invention provides a preparation method of a polyglycerol fatty acid ester. The preparation method comprises the steps of firstly obtaining mixed polyglycerol through polymerization reaction of glycerol under the catalysis of an KF-SnCl2/Al2O3 supported solid base catalyst, conducting purifying treatment on the mixed polyglycerol by molecular distillation to obtain relatively pure polyglycerol, and then preparing the polyglycerol fatty acid ester through esterification reaction of the purified polyglycerol and liquid fatty acid. The polyglycerol obtained by the preparation method is concentrated in polymerization degree and is mainly of a linear chain structure, and the produced polyglycerol fatty acid ester not only has good taste, light smell and light color and luster, can reach thesame level of imported products, meets the national food additive safety standards, has strong emulsifying capability and meets the performance requirements and food safety requirements of various emulsifying systems. In addition, the polymerization reaction temperature of the preparation method is low, the production cost is reduced, and the preparation method is simple in operation and suitablefor large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of fine chemical synthesis and relates to a preparation method of polyglycerol fatty acid ester. Background technique [0002] Food emulsifiers are the most widely used food additives in the food industry. At present, the amount of food emulsifiers used in the world exceeds 400,000 tons, and the amount of polyglycerol fatty acid esters ranks second. Polyglyceryl fatty acid ester is a new type of food emulsifier and non-ionic surfactant with high efficiency and excellent performance. Due to the difference in the degree of polymerization of glycerol and the type of fatty acid, a series of polyglyceryl fatty acid ester products can be prepared. The distribution of HLB values. These polyglycerol fatty acid ester products have good emulsification, dispersion, wetting, stability and other properties, and can be decomposed in the process of human metabolism, with high safety, so they are widely used in food proces...

Claims

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Application Information

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IPC IPC(8): C11C3/08
CPCC11C3/08
Inventor 胡道华杨菁张思源冯洁
Owner 广州美晨科技实业有限公司
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