Method for continuously generating fine gutta-percha through digestion-reextraction

A technology of eucommia gum and back-extraction liquid is applied in fertilizers made of biological waste, pharmaceutical formulations, medical preparations containing active ingredients, etc. High rate, low consumption, good product quality effect

Inactive Publication Date: 2010-12-08

刘志成

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AI-Extracted Technical Summary

Problems solved by technology

It can be seen that these methods are not efficient, easily pollute the environment, and are difficult to industrialized applic...

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Method used

1 leaves Eucommia ulmoides naturally ai...

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Abstract

The invention relates to a method for continuously generating fine gutta-percha through digestion-reextraction. The method comprises the steps of: firstly, pre-treating folium cortex eucommiae including drying, crashing and cutting; secondly, digesting gutta-percha from folium cortex eucommiae through leach liquor; thirdly, separating gutta-percha from folium cortex resin through reextraction solution and dissolving the gutta-percha; and fourthly, post-treating materials, principally to dry the dissolved gutta-percha so as to obtain the fine gutta-percha. The method of the invention has the advantages that the leach liquor is nonflammable non-toxic agent, the gutta-percha extraction efficiency is high, the environment is prevented from being polluted, the folium cortex eucommiae is complexly used, no waste generates, the solvent is recycled, the consumption is low, the product quality is high, industrial continuous production is realized, the economic, environment-friendly and social benefits are all better than the traditional production method, and the promotional value is high.

Application Domain

Natural resin coatingsClimate change adaptation +3

Technology Topic

SolventDigestion +3

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Examples

Experimental program(1)

Example Embodiment

[0034] Example: Eucommia gum was produced according to the following steps:

[0035] 1 Dry the leaves of Eucommia ulmoides naturally to reduce the water content of the leaves;

[0036] 2 Pass the air-dried blades into the microwave drying through the belt conveyor to remove the remaining water;

[0037] 3 Transport the dried leaves to an improved low-power axial flow fan with a 1:10 blade length-to-width ratio to separate the mesophyll from the leaf stem, and then separate the mesophyll from the leaf stem by a cyclone;

[0038] 4 The leaf stems are sent to the roller press with a belt conveyor, after several times of rolling, the leaf stems are formed into thin pieces, and then cut into strips with a large noodle cutter, and the strips are cut into 5mm~10mm by the shearing machine. Small sections are continuously fed into the extraction tank with a belt conveyor;

[0039] 5 In the leaching tank filled with chloroform, heat the mixture to 52℃±1℃, and continuously leaching for 2.5 hours under reflux;

[0040] 6 Continuously vacuum filter the leachate and residue to separate the residue;

[0041] 7 Add the stripping liquid ethylene glycol diethyl ether to the leaching solution, the adding amount is 20% of the weight of the leaching solution to form a mixed solution;

[0042] 8 Fractionate the mixed liquid through a ramp fractionator, and the fractionated liquid is recovered and reused, and the fractionation temperature is controlled at 62°C;

[0043] 9 Eucommia rubber gradually separates out during the fractionation process, while Eucommia resin and other small amounts of ester-soluble drugs remain in the stripping solution;

[0044] 10 The separated gutta-percha gum is dried at 70°C, and the refined gutta-percha gum is obtained after drying;

[0045] 11 The resin left in the stripping solution is separated from the medicinal substance and the resin;

[0046] 12 The separated resin is modified to prepare ester-soluble paint and water-soluble environmentally friendly paint;

[0047] 13 The leaf stem filter residue after leaching is mixed with mesophyll for use.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

High extraction rate
Reduce consumption

Method for continuously generating fine gutta-percha through digestion-reextraction

A technology of eucommia gum and back-extraction liquid is applied in fertilizers made of biological waste, pharmaceutical formulations, medical preparations containing active ingredients, etc. High rate, low consumption, good product quality effect

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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