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Synthesis method of fatty acid polyethylene glycol ester

A technology of polyethylene glycol ester and synthesis method, which is applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of product market promotion limitation, dark color, etc.

Pending Publication Date: 2021-12-10
SHANGHAI DUOLUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Fatty acid polyethylene glycol ester can be obtained by the method of esterification reaction between fatty acid and polyethylene glycol in the presence of acidic catalyst, such as the synthetic research of oleic acid polyethylene glycol ester catalyst carried out by Luo Xiaomin etc. (Luo Xiaomin, Qiang Taotao , Ren Longfang. Research on Catalytic Synthesis of Polyethylene Glycol Oleate [J]. Journal of Shaanxi University of Science and Technology, 2008, 26(2): 50~52), but the fatty acid polyethylene glycol ester product obtained by this method has a darker color , the market promotion of this product is limited in occasions where the product has high requirements for low chroma

Method used

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  • Synthesis method of fatty acid polyethylene glycol ester
  • Synthesis method of fatty acid polyethylene glycol ester
  • Synthesis method of fatty acid polyethylene glycol ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Drop into 400 grams of polyethylene glycol 400, 560 grams of oleic acid, 2.0 grams of p-toluenesulfonic acid, 2.0 g of hypophosphorous acid, start and keep stirring, replace the air in the reaction kettle with nitrogen three times, then feed nitrogen continuously, the flow rate of nitrogen is 100 ml / min, raise the temperature of the kettle to 150°C for 5 hours, then cool down to 60°C, stop stirring and stop feeding nitrogen, and discharge to obtain fatty acid polyethylene glycol ester product.

[0041] For the convenience of comparison, the main process parameters and product test results are listed in Table 1.

Embodiment 2

[0046] Drop into 400 grams of polyethylene glycol 400, 560 grams of oleic acid, 2.0 grams of p-toluenesulfonic acid, 2.0 grams of stannous oleate, start and keep stirring, replace the air in the reaction kettle with nitrogen three times, then feed nitrogen continuously, the flow rate of nitrogen is 100 ml / min, raise the temperature of the kettle to 150°C for 5 hours , the temperature was lowered to 60° C., the agitation was stopped and nitrogen flow was stopped, and the fatty acid polyethylene glycol ester product was obtained by discharging.

[0047] For the convenience of comparison, the main process parameters and product test results are listed in Table 1.

Embodiment 3

[0049] Drop into 400 grams of polyethylene glycol 400, 560 grams of oleic acid, 2.0 grams of P-toluenesulfonic acid, 0.2 gram of stannous oleate and 1.8 gram of hypophosphorous acid, open and keep stirring, nitrogen replacement reactor air three times, then feed nitrogen continuously, the flow of nitrogen is 100 milliliters / minute, still temperature is raised to React at 150°C for 5 hours, cool down to 60°C, stop stirring and stop feeding nitrogen, and discharge to obtain fatty acid polyethylene glycol ester product.

[0050] For the convenience of comparison, the main process parameters and product test results are listed in Table 1.

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Abstract

The invention relates to a synthesis method of fatty acid macrogol ester. The invention mainly solves the problem of high chromaticity of a product obtained by an existing synthesis method of fatty acid macrogol ester. The synthesis method of fatty acid macrogol ester comprises the following step: in the presence of an acid catalyst and other reaction assistants, subjecting polyethylene glycol and a raw material fatty acid to an esterification reaction to obtain the fatty acid polyethylene glycol ester, wherein the other reaction assistants comprise at least one selected from hypophosphorous acid compounds and stannous fatty acid. Thus, the above technical problem is well solved, and the method can be used for producing the fatty acid polyethylene glycol ester.

Description

technical field [0001] The invention relates to a synthesis method of fatty acid polyethylene glycol ester. Background technique [0002] Fatty acid polyethylene glycol ester is a kind of nonionic surfactant, which has a wide range of applications in various fields of spinning oils, chemical auxiliary agents and daily chemicals. [0003] Fatty acid polyethylene glycol ester can be obtained by the method of esterification reaction between fatty acid and polyethylene glycol in the presence of acidic catalyst, such as the synthetic research of oleic acid polyethylene glycol ester catalyst carried out by Luo Xiaomin etc. (Luo Xiaomin, Qiang Taotao , Ren Longfang. Research on Catalytic Synthesis of Polyethylene Glycol Oleate [J]. Journal of Shaanxi University of Science and Technology, 2008, 26(2): 50~52), but the fatty acid polyethylene glycol ester product obtained by this method has a darker color , the market promotion of this product is limited in occasions where the low ch...

Claims

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Application Information

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IPC IPC(8): C07C67/08C07C69/533
CPCC07C67/08C07C69/533
Inventor 张怀哲李翔钟敏王建臣张江锋侯海育
Owner SHANGHAI DUOLUN CHEM
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