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Phenolic hydroxyl fatty acid antioxidant and preparation method and application thereof

A technology of phenolic hydroxy fatty acid and antioxidant, applied in the field of phenolic hydroxy fatty acid antioxidant and its preparation, can solve the problems of low antioxidant efficiency, poor antibacterial effect, poor thermal stability, etc., and achieve high antioxidative efficiency and antibacterial effect Good, good thermal stability

Inactive Publication Date: 2018-01-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in view of the problems of poor thermal stability, easy volatilization and failure, large toxic and side effects, low anti-oxidation efficiency and poor antibacterial effect of the current artificially synthesized antioxidants, the present invention provides a method for preparing branched-chain fatty acids as antioxidants

Method used

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  • Phenolic hydroxyl fatty acid antioxidant and preparation method and application thereof
  • Phenolic hydroxyl fatty acid antioxidant and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A preparation method and application thereof of phenolic hydroxyl fatty acid antioxidant, comprising the following steps:

[0031] (1) Add 1.2g montmorillonite, 40g methyl oleate, and 19.236g phenol (the molar ratio of methyl oleate to phenol is 1:2) into the autoclave, seal it, and fill it with argon inert gas to 0.4Mpa, Heated to 200°C and reacted at this temperature for 6h to obtain a mixture containing isomerized products.

[0032] (2) After the mixture was cooled, it was washed with ethyl acetate, and the solid catalyst was removed by suction filtration. The obtained filtrate was added with deionized water and rotary evaporated at 90°C.

[0033] (3) Take 5g of the remaining liquid obtained after rotary steaming and put it into a high-pressure reactor, add 1.5g of Pd / C hydrogenation catalyst, dilute it with 25ml of methanol, seal it, fill it with hydrogen to 0.4 Mpa, react at room temperature for 4 hours, and then use acetic acid Wash with ethyl ester, remove the h...

Embodiment 2

[0037] A preparation method and application thereof of phenolic hydroxyl fatty acid antioxidant, comprising the following steps:

[0038] (1) Add 2.8g montmorillonite, 40g methyl oleate, and 19.236g phenol (the molar ratio of methyl oleate to phenol is 1:2) into the autoclave, seal it, fill it with nitrogen inert gas to 0.4Mpa, and heat To 200 ° C, and react at this temperature for 6h to obtain a mixture containing isomerization products.

[0039] (2) After the mixture was cooled, it was washed with ethyl acetate, and the solid catalyst was removed by suction filtration. The obtained filtrate was added with deionized water and rotary evaporated at 90°C.

[0040] (3) Take 5g of the remaining liquid obtained after rotary steaming and put it into a high-pressure reactor, add 1.5g of Pd / C hydrogenation catalyst, dilute with 25ml of methanol, seal it, fill it with hydrogen to 0.4Mpa, react at room temperature for 4 hours, and then use ethyl acetate The ester was washed, the hydrog...

Embodiment 3

[0044] A preparation method and application thereof of phenolic hydroxyl fatty acid antioxidant, comprising the following steps:

[0045] (1) Add 2.8g montmorillonite, 40g methyl oleate, and 19.236g phenol ((the molar ratio of methyl oleate to phenol is 1:2)) into the autoclave, seal it, and fill it with nitrogen inert gas to 0.4Mpa , heated to 200°C, and reacted at this temperature for 8h to obtain a mixture containing isomerized products.

[0046](2) After the mixture was cooled, it was washed with ethyl acetate, and the solid catalyst was removed by suction filtration. The obtained filtrate was added with deionized water and rotary evaporated at 90°C.

[0047] (3) Take 5g of the remaining liquid obtained after rotary steaming and put it into a high-pressure reactor, add 1.5g of Pd / C hydrogenation catalyst, dilute with 25ml of methanol, seal it, fill it with hydrogen to 0.4Mpa, react at room temperature for 4 hours, and then use ethyl acetate The ester was washed, the hydro...

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Abstract

The invention discloses a phenolic hydroxyl fatty acid antioxidant and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing and heating montmorillonite, fatty acid and phenol for a reaction to obtain a mixture containing phenolic hydroxyl fatty acid; (2) after the mixture obtained in the step (1) is cooled down, performing washing and filtering, and conducting reduced pressure distillation on an obtained filtrate to obtain a mixture containing phenolic hydroxyl additive unsaturated fatty acid; (3) performing hydrogenation on the mixtureobtained in the step (2) to obtain a mixture containing phenolic hydroxyl additive saturated fatty acid; and (4) performing molecular distillation on the mixture containing phenolic hydroxyl additivesaturated fatty acid, obtained in the step (3), to obtain the phenolic hydroxyl fatty acid antioxidant. The preparation method is simple, efficient and environmentally friendly and doses not need aftertreatment; as an antioxidant, prepared phenolic hydroxyl fatty acid has the characteristics of good thermal stability, low probability of volatile failures, small toxic and side effects, high anti-oxidation efficiency and good antibacterial effect, and has a favorable application prospect.

Description

technical field [0001] The invention relates to the field of antioxidants, in particular to a phenolic hydroxyl fatty acid antioxidant and its preparation method and application. Background technique [0002] Fatty acids and their alkyl esters are components of various compositions such as lubricants, polymers, solvents, cosmetics, etc., which are usually obtained by hydrolyzing triglycerides of vegetable or animal origin. Natural triglycerides are esters of glycerol with even-numbered, generally straight-chain, carboxylic acids having from 10 to 24 carbon atoms. The most common are fatty acids with 12, 14, 16 or 18 carbon atoms. These fatty acids are either saturated or contain one or more unsaturated bonds. [0003] Long straight-chain saturated fatty acids (C10:0 and higher) are solid at room temperature, making them difficult to handle in many applications, while unsaturated long-chain straight-chain fatty acids such as oleic acid are liquid at room temperature and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/36C07C51/367C07C59/52C07C67/303C07C67/347C07C69/732C11B5/00
Inventor 严宗诚陈义文陈砺董青
Owner SOUTH CHINA UNIV OF TECH
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