A kind of method of extracting gutta-percha
The present invention relates to a kind of extracting method of crude substance, more particularly, the present invention relates to a kind of method of extracting gutta-percha.
Usually, the pre-treating process that extracts gutta-percha is through fermentation-soda boiling-centrifugal separation method with Folium Eucommiae, CN86100216,1986.1.16, propose to smash method and carry out pre-treatment with fermentation-soda boiling-high speed waterpower, fermentation, two processes of soda boiling are Mierocrystalline cellulose and these quality of destroying in the leaf, thereby make to contain the glue tissue and come out, stay contain the glue partial volume comparable former with leaf volume-diminished 1-2 doubly, further reduced volume, also will be through grinding flushing, because to the leaf fermentation, the soda boiling required time will reach two months, and the bulk fermentation leaf can rot because of miscarriage causes leaf, polluted air, this method pre-treatment time is long, and occupied ground is big, and investment is high.
It is long to the objective of the invention is to overcome the pre-treatment time of extracting gutta-percha, and occupied ground is big, investment height and the shortcoming that causes environmental pollution, and a kind of method of extracting gutta-percha with grinding method is provided.
The objective of the invention is to adopt following measure to realize, Folium Eucommiae is placed in the ball mill mills, after 20-30 minute, pour water, the rotation of material limit, the disintegrating slag limit is washed out, effectively contain the glue part with the collection of 50-100 purpose sieve, effective material after the processing is moisture more, dry with drier earlier, with boiler afterheat oven dry or natural air drying, dried material is packed in the extractor again, with organic solvent (toluene, benzene, ethylene dichloride, sherwood oil) extracts thick glue, use ordinary organic solvents (alcohol again, ketone, ether, aldehyde, ester) purifies the whole process of finishing the extraction gutta-percha.
The present invention extracts the gutta-percha pre-treating process, and equipment used adopts ball mill, grinds roller, and constant speed all can to roller.
When Folium Eucommiae was milled, the leaf positive pressure of only being rolled was not subjected to shear action, so only the non-glue component that contains in leaf surface is ground, made to contain the glue tissue in the leaf and come out, and reached the purpose that contains the glue enrichment.It is that the be untreated volume of leaf of volume ratio that the 40-50% (weight meter) of former leaf amount contains the glue part can dwindle 4-5 doubly that sieve removes waste residue, because this method can not cause the loss that contains the glue tissue, compared with prior art, gum content can increase by 1 times, thereby saved the consumption of solvent when glue is carried in the back greatly, the while place takies little, and facility investment is few, and shortening the pre-treatment required time also can easy at regular time and quantity operation.
Embodiment 1:
500 gram bark of eucommia dried leaves after fermented 2 months, soda boiling 3 hours and high-speed stirring are washed, are sieved, dry that thick glue 11 restrains, through rolling cleanization, dry that finished product sizing material 6 restrains again.
Embodiment 2:
500 gram bark of eucommia dried leaves are put into ball mill milled 20 minutes, put into the water flushing, sift out waste residue with 50 mesh sieve, what stay contains the glue part, dry through drier, seasoning is put into extractor through thick glue 20 grams of methylbenzene extraction with dried material, after the solvent evaporated, get finished product sizing material 10 grams with acetone extraction.