Preparation process of sodium stearoyl lactylate

A technology of sodium stearoyl lactylate and preparation process, applied in the chemical field, can solve the problems of high price of stearic acid, increase production cost, long process route, etc., and achieve the effects of preventing darkening of color, reducing peculiar smell, and simple process steps

Inactive Publication Date: 2017-12-22
佳力士添加剂(海安)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Three-step method: first prepare stearoyl chloride and lactoyl lactic acid respectively, then acylate and neutralize to obtain sodium stearoyl lactylate (SSL), which is a long and time-consuming process
[0009] The above process raw materials are lactic acid and stearic acid, 4.8% of water needs to be removed during the reaction process, which increases the production cost, and the price of stearic acid is more expensive than glyceryl tristearate

Method used

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  • Preparation process of sodium stearoyl lactylate

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Effect test

Embodiment 1

[0020] The preparation technology of present embodiment sodium stearoyl lactylate, this preparation technology, concrete steps are as follows:

[0021] (1) Heat lactic acid to 110°C under the condition of -0.09MPa for concentration and dehydration to obtain concentrated lactic acid;

[0022] (2) Send 10mol glyceryl tristearate and 40mol concentrated lactic acid into the reaction kettle, add sodium hydroxide and pass nitrogen into the reaction kettle, nitrogen replacement 3 times, nitrogen pressure is -0.09MPa, at 220 ℃ Stirring and reacting for 2 hours under certain conditions to obtain sodium stearoyl lactylate.

Embodiment 2

[0024] The preparation technology of present embodiment sodium stearoyl lactylate, this preparation technology, concrete steps are as follows:

[0025] (1) Heat lactic acid to 80°C under the condition of 0.06MPa to concentrate and dehydrate to obtain concentrated lactic acid;

[0026] (2) Send 10mol glyceryl tristearate and 80mol concentrated lactic acid into the reaction kettle with a molar ratio of 10mol, add an alkali catalyst and feed nitrogen into the reaction kettle, replace the nitrogen gas 4 times, and fill the nitrogen gas with a pressure of 0.06MPa. The reaction was stirred under the condition of ℃ for 8 hours to obtain sodium stearoyl lactylate.

Embodiment 3

[0028] The preparation technology of present embodiment sodium stearoyl lactylate, this preparation technology, concrete steps are as follows:

[0029] (1) Heat lactic acid to 95°C under the condition of -0.02MPa to concentrate and dehydrate to obtain concentrated lactic acid;

[0030] (2) Send 10mol glyceryl tristearate and 60mol concentrated lactic acid into the reaction kettle with a molar ratio of 10mol, add an alkali catalyst and feed nitrogen into the reaction kettle, replace the nitrogen three times, and fill the nitrogen with a pressure of -0.02MPa. Stir the reaction at 155°C for 5 hours to obtain sodium stearoyl lactylate.

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Abstract

The present invention relates to a preparation process of sodium stearoyl lactylate. The preparation process is as follows: tristearin or tripalmitin is used as a raw material, lactic acid is heated, dehydrated and concentrated under reduced pressure, and the tristearin or the tripalmitin and the concentrated lactic acid are stirred at high temperature in the presence of a base catalyst under the protection of nitrogen to generate the sodium stearoyl lactylate. The preparation process has the advantages that the preparation process adopts the tristearin or the tripalmitin as the raw material, the tristearin or the tripalmitin as the raw material has the advantages of low price, no production of water during the reaction, the cost is effectively reduced, a base is used as the catalyst to increase the mixing degree of oil and the lactic acid and facilitate dissolving and chemical reaction of the oil and the lactic acid, and the nitrogen as a protective gas can effectively prevent decomposition of saturated fatty acids at high temperatures and color darkening, reduces product peculiar smell and odor, and ensures product quality.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a preparation process of sodium stearoyl lactylate. Background technique [0002] Sodium stearoyl lactylate (SSL) is an anionic surfactant. It is a food additive commonly used in the world at present. It is used as a food additive in the United States and Europe. It plays the role of emulsification, thickening, preservation, and delaying food aging. Its HLB value is 9.5, and it can be equipped with O / W and W / O emulsions . [0003] Sodium stearoyl lactylate (SSL), as an important food emulsifier and additive, is widely used in food, pharmaceutical, cosmetic and other industries. [0004] Nitrogen is chemically inert and is often used as a protective gas. It has the characteristics of non-toxic, harmless, non-combustible, non-polluting, easy to recover and recycle, and is an environmentally friendly green gas. [0005] At present, there are three main routes for the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/03C07C69/675
CPCC07C67/03C07C69/675
Inventor 孙敬章
Owner 佳力士添加剂(海安)有限公司
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