SU19777A1 - The method of obtaining rubber - Google Patents

Description

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The present invention relates to methods for producing rubber from a rubber-containing substance contained in T, that the rubber-containing substance is subjected to mechanical grinding with or without 9, after which it is treated with conventional solvents to remove impurities and then the rubber is removed from it with light oil. Nymi shoulder straps .-,

In the capacity of such a rubber-containing substance in many cases, the benefits) P (from the Milky sap of various plants and, in particular, from the family of plants from the family, separate genera and species (dandelion, lettuce, celandine, etc.) usually contain milky juice, The royal representative of this parthenium family has long been a source for the industrial production of rubber.

- With the rubber slit in the proposed method, jtoKOHbi caterpillars from the family „pyrolidae” are used as rubber substances; parasitic on milky containing, chondrilla sap plants, which also belong to the aforementioned „compositae, and extracted; willow

these cocoons, the milky juice is treated in one way or another in the following known manner. For example, sorted dried and cleaned cocoons of parasitic caterpillars of the family of chondrilla caterpillars of the family, rurolidae are steamed, washed, crumpled and torn into warm or hot water in a groove while the water is still removing litter, dirt, sand and soluble constituents of coca.

The mass thus obtained is treated in a known manner successively with water, alcohol, aldehydes or acetone and gasoline. At the same time, water extracts gums, salts, and other valuable substances; alcohol, aldehydes, and acetone remove resins that can replace imported resins in lacquer production, and gasoline extracts rubber, which is precipitated from it with acetone (alcohol or aldehyde). The precipitated rubber is then washed with water to remove residual acetone, gasoline, alcohol, and aldegde, and the resulting product is dried and treated as natural rubber. Instead of alcohol, aldehydes or acetone,

used resin solutions can be used until the resin concentration in these solutions reaches that of resin varnishes; such solutions of resins in volatile solvents are marketed as varnishes.

The process of extracting rubber from the cocoons of these caterpillars can be simplified by the fact that the light-gray, slightly sticky mass obtained after removal of impurities (stones, litter, dirt, etc.) is dissolved as usual in a suitable solvent (in light oil). , kerosene, gasoline, gasoline, petroleum ether, etc.). The solution is allowed to stand and, after removing the settled impurities, rubber is precipitated from it.

The liquid (solution of the resin in the mixture of solvent and precipitator) is drained from the rubber and the resulting crude rubber is freed from the liquids remaining in it according to one of the known methods.

Finally, to extract rubber from the cocoons of the caterpillars of the family of pyrolidae, it is possible to use another known method in that

The cocoons dried, well cleaned and freed from caterpillars and pupae are mixed and thoroughly shuffled with a finely planed bore, then washed with water. Wash water is collected and rubber contained in conjunction with soap is extracted from it by conventional means.

This method, according to the author, gives a rubber yield of more than 50 ° / g of the weight of the cocoon taken, not counting the rubber extracted by the washing water.

The subject of the patent.

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A method of producing rubber from a rubber-containing substance by mechanically rubbing it with or without soap, then treating with usual solvents to remove impurities and removing from it rubber with light oil chases, characterized in that cocoons are used as rubber-containing substances family „pyrolidae, parasitic on the plant„ chondrilla.