Polyisoprene production method
A technology of polyisoprene and ethylene glycol dimethyl ether, applied in separation methods, chemical instruments and methods, solvent extraction, etc., can solve carcinogenicity, heavy environmental load, and reduce the recovery rate of polyisoprene components and other issues to achieve the effect of controlling impact and improving production efficiency
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[0053] figure 1 is a fabrication drawing illustrating an example of the method of the present invention.
[0054] First, in the present invention, a pretreatment solvent ( figure 1 The pretreatment procedure 12) in. The crushed body is crushed by a crushing means known to those skilled in the art (such as a pulverizer, a paddy peeling machine) to a predetermined particle diameter. The crushed body can also be obtained by chemical treatment (such as alkali treatment) or preservation by using microorganisms. By using the crushing means to crush the plant body containing polyisoprene, the tissue structure inside the plant is destroyed, and the polyisoprene component that is usually sealed in the milk duct cells can be improved in the subsequent process ((A ) process) the probability of exposure to organic solvents. In addition, pigment components such as chlorophyll and fat-soluble components in the pretreatment process can be more easily removed by destroying the plant tissu...
Embodiment 1
[0079] For Eucommia ulmoides, a temperate tree that produces trans-polyisoprene, samara harvested in the fall of 2014 were thoroughly dried. Afterwards, the seeds are separated from the peel in a paddy peeling machine (in addition, it is known that the peel of Eucommia contains about 10% to about 25% by weight of trans polyisoprene on a dry weight basis). The pericarp obtained by this operation is broken into particles with a maximum diameter of about 2 mm. This crushed product was used as a sample in the following steps.
[0080] Put 10 g of the obtained sample into a round-bottomed flask, add 250 ml of ethylene glycol dimethyl ether as a solvent at room temperature, and stir for 6 hours at room temperature with a stirrer at a speed of 120 rpm to 180 rpm.
[0081] Next, the solvent was taken out by the nitrogen pressure of the cannula, and 120 ml of ethylene glycol dimethyl ether was added to the residue, and the contents were stirred for several seconds with a stirrer, and ...
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