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Method for preparing conjugated ethyl linoleate by using safflower seed oil as raw material

A technology of conjugated ethyl linoleate and safflower seed oil is applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc. The effect of reducing usage, increasing utilization and productivity

Inactive Publication Date: 2020-02-28
XINJIANG ZHUANGZI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to provide a kind of method that utilizes safflower seed oil as raw material to prepare conjugated linoleic acid ethyl ester, to solve above-mentioned traditional ethyl linoleic acid ethyl linoleic acid raw material usage amount is larger in the preparation process, resulting in low production efficiency question

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  • Method for preparing conjugated ethyl linoleate by using safflower seed oil as raw material

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Embodiment 1

[0028] This embodiment provides a method for preparing conjugated ethyl linoleate using safflower oil as a raw material, such as figure 1 Shown, preparation method is, the first step: get 0.6kg potassium hydroxide and dissolve in 15kg dehydrated alcohol, make dehydrated alcohol-potassium hydroxide solution, the purity of potassium hydroxide adopts analytical grade, 15.6kg anhydrous Mix ethanol-potassium hydroxide solution and 100kg safflower seed oil, and carry out ethyl esterification reaction in a reaction kettle at room temperature for 6 hours; the second step: leave the ethyl esterified mixture overnight, and after the layers are separated, release the lower layer , treated separately, and keep the upper layer; the third step: add the water of 12% of its mass to the upper layer mixture after liquid separation, stir slowly at a speed of 10r / min and let it stand for 3h, release the washing liquid of the lower layer, and wash it repeatedly for 2 to 3 hours. times until the wa...

Embodiment 2

[0030] This embodiment provides a method for preparing conjugated ethyl linoleate using safflower oil as a raw material, such as figure 1 Shown, preparation method is, the first step: get 1.5kg potassium hydroxide and dissolve in 20kg dehydrated alcohol, make dehydrated alcohol-potassium hydroxide solution, the purity of potassium hydroxide adopts analytical grade, 21.5kg anhydrous Mix ethanol-potassium hydroxide solution and 100kg safflower seed oil, and carry out ethyl esterification reaction in a reaction kettle at room temperature for 5h; the second step: leave the ethyl esterified mixture standing overnight, and release the lower layer after layering , treated separately, and keep the upper layer; the third step: add 15% water to the upper layer mixture after liquid separation, stir slowly at a speed of 10r / min and let it stand for 3h, release the washing liquid of the lower layer, and wash it repeatedly for 2 to 3 hours. times until the washing liquid in the lower layer ...

Embodiment 3

[0032] This embodiment provides a method for preparing conjugated ethyl linoleate using safflower oil as a raw material, such as figure 1 Shown, preparation method is, the first step: get 2kg potassium hydroxide and dissolve in 27kg dehydrated alcohol, make dehydrated alcohol-potassium hydroxide solution, the purity of potassium hydroxide adopts analytical grade, 27kg dehydrated alcohol- Potassium hydroxide solution and 100kg safflower seed oil were mixed, and ethyl esterification reaction was carried out in a reaction kettle at room temperature for 4h; the second step: the mixture after ethyl esterification was left to stand overnight, and after the layers were separated, the lower layer was released and separately processing, retaining the upper layer; the third step: adding water with a mass of 15% to the upper layer mixture after liquid separation, stirring slowly at a speed of 10r / min and then standing for 3 hours, releasing the washing liquid of the lower layer, and washi...

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Abstract

The invention provides a method for preparing conjugated ethyl linoleate by using safflower seed oil as a raw material. The method comprises: carrying out an ethyl esterification reaction on safflowerseed oil used as a main raw material and having an linoleic acid content of up to 69-79%, absolute alcohol and potassium hydroxide, carrying out liquid separation, carrying out water washing, drying,conjugating through a solvent-free method, carrying out water washing, and distilling to prepare the conjugated ethyl linoleate. According to the invention, with the method, only 0.993 ton of safflower seed oil needs to be consumed for each ton of the finished product, so the use amount of the raw material is greatly reduced, and the utilization rate and the production efficiency are improved.

Description

technical field [0001] The invention relates to the field of preparation of conjugated linoleic acid, in particular to a method for preparing ethyl conjugated linoleate by using safflower seed oil as a raw material. Background technique [0002] Ethyl linoleate is a colorless to pale yellow oily liquid, which can reduce blood cholesterol and blood lipids. It is mainly used as a pharmaceutical raw material to prevent and treat atherosclerosis. The traditional preparation method of ethyl linoleate is obtained by esterifying linoleic acid and ethanol in the presence of sulfuric acid. Put linoleic acid (with iodine value above 168), absolute ethanol and concentrated sulfuric acid into the reactor, stir and heat Reflux for 4 hours; distill and recover ethanol until no ethanol is distilled out; let cool, wash with water until the water layer is no longer acidic to the fruit red test paper, then distill under reduced pressure to remove water, and then collect the 195°C (0.93 kPa) f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/58C07C67/08C07C67/54
CPCC07C67/08C07C67/54C07C69/58
Inventor 庄彦斌任淑梅
Owner XINJIANG ZHUANGZI IND
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