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Purification method for longifolene

A purification method and technology of longifolene, which is applied in the field of longifolene purification, can solve the problems of unsatisfactory longifolene purification effect, complicated purification process, harsh reaction conditions, etc., and achieve low cost, simple process and process, and high reaction efficiency. The effect of mild conditions

Inactive Publication Date: 2014-12-10
WUZHOU PINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a purification method of longifolene, which can solve the problems of unsatisfactory purification effect of longifolene, complex purification process and harsh reaction conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The thick longifolene to be purified in the present embodiment contains 65% longifolene and 10% caryophyllene by weight percentage, and the method for purifying longifolene from this thick longifolene is:

[0014] Under stirring conditions, 0.8kg thick longleaf alkene, 0.1kg water, 0.12kg acetic acid, 0.01kg hydroquinone and 0.05kg p-toluenesulfonic acid were put into the reactor, and the temperature was raised to 40 ° C and continued to stir, after 6 hours The stirring was stopped, the material layer was separated by standing, and then the obtained material was washed with water and then rectified.

[0015] After the longifolene product processed in this example, the content of longifolene is increased to 80%.

Embodiment 2

[0017] The thick longifolene to be purified in the present embodiment contains 67% longifolene and 11% caryophyllene by weight percentage, and the method for purifying longifolene from this thick longifolene is:

[0018] Under agitation, 0.9kg thick longleaf alkene, 0.11kg water, 0.15kg acetic acid, 0.015kg hydroquinone and 0.06kg p-toluenesulfonic acid are put into the reactor, be warming up to 50 ℃ and continue to stir, after 8 hours The stirring was stopped, the material layer was separated by standing, and then the obtained material was washed with water and then rectified.

[0019] After the longifolene product processed in this example, the longifolene content was increased to 81%.

Embodiment 3

[0021] The thick longifolene to be purified in the present embodiment contains 68% longifolene and 12% caryophyllene by weight percentage, and the method for purifying longifolene from this thick longifolene is:

[0022] Under stirring conditions, 1.0kg thick longleaf alkene, 0.12kg water, 0.16kg acetic acid, 0.02kg hydroquinone and 0.07kg p-toluenesulfonic acid were put into the reactor, and the temperature was raised to 60 ° C and continued to stir, after 10 hours The stirring was stopped, the material layer was separated by standing, and then the obtained material was washed with water and then rectified.

[0023] After the longifolene product processed in this example, the longifolene content was increased to 82%.

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PUM

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Abstract

The invention discloses a purification method for longifolene, belonging to the technical field of deep processing of turpentine. The purification method comprises the following steps of placing longifolene to be treated, water, acetic acid, p-dihydroxybenzene and p-toluenesulfonic acid into a reaction kettle under a stirring condition, heating to 40-60 DEG C, continuing to stir, stopping stirring after 6-10 hours, standing for separating a material layer, and then, distilling after washing the obtained material. The purification method has the advantages of mild reaction conditions, simplicity and convenience in process and flow, few utilization equipment and low cost.

Description

technical field [0001] The invention belongs to the technical field of deep processing of turpentine, in particular to a method for purifying longifole. Background technique [0002] Longifolene is a kind of natural spice extracted from heavy turpentine. It has special chemical activity and is the raw material of synthetic resin, synthetic spice, flotation agent and organic synthesis. Products such as longleaf ketene can be used in the formulation of flavors to replace some expensive flavors. [0003] In the preparation process of longifolene, since longifolene is close to the boiling point of caryophyllene in heavy turpentine, the obtained longifolene product usually contains 10% to 12% caryophyllene, so that the purity of longifolene is only 65% to 68%, which greatly reduces the use value of longifolene. At this time, the caryophyllene in the crude longifolene is generally eliminated by physical and chemical methods, so as to achieve the purpose of improving the longifol...

Claims

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Application Information

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IPC IPC(8): C07C13/605C07C7/148
Inventor 黄宇平陈伟强刘建军陈键泉岑潮锋黄蕾
Owner WUZHOU PINE CHEM
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