Method for preparing gutta-percha from eucommia bark

The technology of Eucommia ulmoides peel and eucommia gum is applied in the field of extraction of natural products, which can solve the problems of damage to rubber threads, long production cycle and large amount of sewage, and achieve the effects of reducing usage, improving utilization efficiency and reducing volume.

Inactive Publication Date: 2013-01-02
HENAN HENGRUIYUAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional pretreatment methods often have the disadvantages of serious damage to the rubber filament, large sewage discharge, and long production cycle.

Method used

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  • Method for preparing gutta-percha from eucommia bark
  • Method for preparing gutta-percha from eucommia bark
  • Method for preparing gutta-percha from eucommia bark

Examples

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Embodiment 1

[0027] A method for preparing eucommia gum from eucommia bark, which is made from natural eucommia bark. The molecular weight of eucommia ulmoides gum is 40,000-300,000. The specific preparation steps are as follows:

[0028] Step 1, put the eucommia bark into clean water, wash it, and dry it to make the water content in the eucommia bark

[0029] Less than 5%, reserve;

[0030] Step 2, sending the eucommia bark treated in step 1 into an ultrafine pulverizer for ultrafine pulverization, and the pulverized particles are flocs with a particle size of 10 μm;

[0031] Step 3. Send the eucommia bark granules crushed in step 2 into an ultrasonic extraction tank for ultrasonic vibration mixing treatment. The specific treatment requirements are:

[0032] A. Put the petroleum ether solution into the ultrasonic extraction tank first, and then add the pulverized Eucommia bark granules. The weight ratio of the Eucommia bark granules to the petroleum ether solution is 1:6;

[0033] B. Tu...

Embodiment 2

[0038] A method for preparing eucommia gum from eucommia bark, which is made from natural eucommia bark. The molecular weight of eucommia ulmoides gum is 40,000-300,000. The specific preparation steps are as follows:

[0039] Step 1, put the eucommia bark into clear water, wash it, and dry it to make the water content in the eucommia bark

[0040] Less than 5%, reserve;

[0041] Step 2, sending the eucommia bark treated in step 1 into an ultrafine pulverizer for ultrafine pulverization, and the pulverized particles are flocs with a particle size of 50 μm;

[0042] Step 3. Send the eucommia bark granules crushed in step 2 into an ultrasonic extraction tank for ultrasonic vibration mixing treatment. The specific treatment requirements are:

[0043] A. Put the petroleum ether solution into the ultrasonic extraction tank first, and then add the pulverized Eucommia bark granules. The weight ratio of the Eucommia bark granules to the petroleum ether solution is 1:10;

[0044] B. T...

Embodiment 3

[0049] A method for preparing eucommia gum from eucommia bark, which is made from natural eucommia bark. The molecular weight of eucommia ulmoides gum is 40,000-300,000. The specific preparation steps are as follows:

[0050] Step 1, put the eucommia bark into clear water, wash it, and dry it to make the water content in the eucommia bark

[0051] Less than 5%, reserve;

[0052]Step 2, sending the eucommia bark treated in step 1 into an ultrafine pulverizer for ultrafine pulverization, and the pulverized particles are flocs with a particle size of 100 μm;

[0053] Step 3. Send the eucommia bark granules crushed in step 2 into an ultrasonic extraction tank for ultrasonic vibration mixing treatment. The specific treatment requirements are:

[0054] A. Put the petroleum ether solution into the ultrasonic extraction tank first, and then add the pulverized eucommia bark granules. The weight ratio of the eucommia bark granules to the petroleum ether solution is: 1: 16;

[0055] B....

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Abstract

A method for preparing gutta-percha from eucommia bark comprises the steps of: first cleaning the eucommia bark with clear water; drying until water content of the eucommia bark is less than 5%; crushing the eucommia bark into particles of 10-100 mum; putting the particles into an extracting tank; adding a single solvent petroleum ether for ultrasonic countercurrent extraction; then conducting stage filtering; and finally extracting gutta-percha by a low-temperature gutta-percha crystal precipitation method. The invention has advantages of simple process, little pollution, high yield and low cost; a micro-grinding pretreatment technology and the ultrasonic countercurrent extraction are employed to realize ideal effects with extraction rate higher than 95% and the gutta-percha content reaching 99.9%.

Description

technical field [0001] The invention relates to a method for extracting natural products, in particular to a method for preparing eucommia gum from bark of eucommia. Background technique [0002] Eucommia ulmoides is a rare and valuable economic tree species unique to China, and it is also an important collagen plant with the widest application range in the world. The leaves, bark and peel of Eucommia are rich in a white filamentous substance - Eucommia gum. The discovery of the unique "rubber-plastic duality" of Eucommia gum has opened up the application field of Eucommia gum. Its comprehensive development and utilization has attracted widespread attention from relevant state departments. [0003] Compared with the applied research on eucommia gum, the extraction process of natural eucommia rubber and the research and development of corresponding demonstration production lines are still at a relatively early stage. Although eucommia gum can be extracted from the bark, lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/00C08L7/00
Inventor 夏琳辛振祥魏军生李银环
Owner HENAN HENGRUIYUAN IND
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