Purification process of gossypol acetate crude product

A technology for gossypol acetate and crude products, which is applied in the separation/purification of carboxylic acid compounds, separation/purification of carbonyl compounds, organic chemistry, etc. problem, to achieve the effect of reducing production cost, avoiding secondary dissolution, and achieving good purification effect

Active Publication Date: 2019-04-30
新疆凯欣生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of this process are: crude product filtration cannot be suction-filtered, so repeated suction-filtering, the effect of suction-filtration is not good, wastes labor and electricity, repeats labor, reduces work efficiency, and increases production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A process for purifying gossypol acetate crude product, comprising the following steps:

[0021] (1) Dissolving in acetone: add acetone to the crude product of gossypol acetate according to 8-9 times the weight of the crude product to fully dissolve;

[0022] (2) Ultrasonic dissolution: accelerate the dissolution of the mixture in step (1), the temperature is within 45°C, the frequency range is controlled at 40KHz, and the mixture is fully dissolved within 30 minutes;

[0023] (3) Filtration with filter paper: Repeatedly filter the mixture in step (2) through medium-speed filter paper (33 cm * 33 cm folded into a triangular funnel), check the color of the filter paper, stop filtering until the filter paper turns yellow, and obtain gossypol acetate filtrate;

[0024] The purity of the product can be grasped by the color of the filter paper: the color of the filter paper is black, which is a manifestation of oil; The crystallization times of gossypol were reduced, and th...

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PUM

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Abstract

The invention discloses a purification technology of a crude gossypol acetate product. The purification technology comprises steps as follows: dissolving with acetone, sufficient dissolving by ultrasonic waves, filtering through filter paper, evaporation and concentration, dissolving with glacial acetic acid, re-dissolving by the ultrasonic waves, post-processing and the like. The purification technology of the crude gossypol acetate product has the advantages that crude gossypol is filtered by the filter paper under normal pressure, cotton oil is adsorbed by the filter paper, the purification effect is good, the time is short, little repetition is required, the product purity can be mastered basically according to the color of the filter paper, a finished product with the purity being 97% or higher can be obtained once, secondary dissolving is avoided, and accordingly, the production cost of the product is reduced by 30%.

Description

technical field [0001] The invention relates to a process for purifying gossypol acetate crude product, belonging to the field of gossypol acetate purification. Background technique [0002] At present, the traditional purification method of gossypol acetate crude product is to add ether or acetone to the crude product of gossypol acetate until it is completely dissolved, add glacial acetic acid dropwise until yellow turbidity appears, let stand, filter under reduced pressure, wash with petroleum ether, and vacuum the filter cake. Dry to obtain refined gossypol acetate. However, the disadvantage of this process is that crude product filtration cannot be suction-filtered. Repeated suction-filtration in this way will result in poor suction-filtration effect, waste of labor and electricity, repeated labor, reduced work efficiency, and increased production costs. Contents of the invention [0003] In order to solve the above problems, the present invention has designed a kind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C53/10C07C51/42C07C51/47C07C51/43C07C47/57C07C45/78C07C45/79C07C45/81
Inventor 韩沅坤韩雨升
Owner 新疆凯欣生物科技有限责任公司
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