DE2351372A1 - PROCESS FOR MANUFACTURING OIL-BINDING MATERIAL - Google Patents

Description

9203-73 / Sch / Ba
File 251-4
JA PA SHO 47-102356
dated October 14, 1972

NITTAN COMPANY, LIMITED 1-11-6, Hatagaya, Shibuya-ku, Tokyo (Japan).

Ferfahren for the production of binding material

The invention relates to a new and improved method for producing oil-binding material from old automobile tires.

With the recent increase in the number of motor vehicles, the disposal of used tires has become a very difficult problem, as no method has yet become known to dispose of the large quantities of used tires in an effective and environmentally friendly way = on the other hand, it is a difficult problem for the public To effectively bind oil such as heavy oil or crude oil that has spilled over a river or lake as a result of a factory or ship accident, since the oil industry grew significantly = A variety of oil-binding materials have been developed and used, but they have all the inevitable disadvantage that they are made from raw materials that can be used beneficially for other purposes and therefore relatively expensive

are =

The object of the invention is to create a very favorable method to address both of these problems at the same time

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solve, and in the proposal of a new manufacturing process for effective oil binding materials from old car tires =

This object is achieved by the features specified in claim 1. The manufacturing method according to the invention for oil binding materials includes the pulverization of used tires and the separation of the fiber components from the pulverized tires by removing the rubber particles. This creates a material of cotton-like substance? this is a very effective oil binding agent is when it is made into sheets or mats.

The pulverized tires consist of cotton-like fibers from the cord fabric and carbon-containing goromiparticles. The invention is based on the knowledge that this Material has extremely good oil absorption properties, namely that 200 g of this material bind 0.8 to 1.4 kg of oil can. This material is already suitable as an oil binding material in this form, but it still has the certain disadvantage that it has a relatively large specific weight due to the fine rubber particles contained in it, so that the per unit weight The amount of oil absorbed is not yet maximally favorable ρ and that rubber particles also fall out during use.

The inventor has now found that the amount of oil absorbed by the powdered tires per unit weight can be remarkably increased by removing the rubber particles. The resulting cotton-like product can be used as it is as an extremely effective oil binding material, but it is more convenient to use it in leaf or mattea form. It has also been found that _β such a shape hardly affecting the oil absorption properties of the material.

The invention is explained in more detail below with the aid of a few examples.

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example 1

An old car tire from the Japanese manufacturer Bridgestone Tire Co. was cut into cubes approximately 20 mm in size with the aid of a turbo cutter and then into a powder casting • corresponding to a screen mesh size of 3.95 to 11.8 meshes pulverized per centimeter »The cotton-like fiber and Product containing rubber particles had an average specific gravity of 0.04. The pulverized product was used for separation the rubber particles sifted from the cotton-like fibers, and the oil binder described here was obtained with a density of 0.017.

It now became heavy oil with a viscosity of 400 cP, crude oil of 15 cP, light oil of 3 cP and kerosene of 1 cP in an amount of 4 kg each poured onto a water surface of 4 square meters, and 200 g of the oil binding agent were sprinkled over it. The weight the oil absorbed by the binder was measured and is shown in Table 1 in relation to the respective weight of the binder applied by myself. For example, the binder had absorbed 19 times its own weight in heavy oil.

Example 2

The cotton-like oil binder was made in the same way prepared as in Example 1 and suspended in an asphalt emulsion containing 1% solids, and this became a Sheet made of 1 mm thick. The density of this sheet was 0.020. The oil absorbency of this sheet became the same measured as in Example 1, and the result is also shown in Table 1.

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Example 3

A chlorinated polypropylene solution was made into water suspended to prepare an atactic polypropylene emulsion with 0.5% solids content. The cotton-like oil binding material, which had been prepared by the method of Example 1 was suspended in and out of this emulsion a mat 6 mm thick was produced. The mat had a density of 0.022. The oil absorbency of this mat was measured in the same manner as in Example 1, and the result is shown in Table 1 as well.

Example 4

The oil absorbency of a pulverized tire according to Example 1, however, without sieving, was measured and the result is also shown in Table 1 for comparison.

Examples 5, 6 and 7

The oil absorbency of the cotton-like fibers of Rayon (Example 5), nylon (Example 6) and polyterephthalate (trade name Tetoron) (Example 7) were each used in the same Measured in the same manner as in Example 1, and the results are shown in Table 1. These synthetic fibers are for Comparison has been selected because they are used as cord fabric for car tires have generally been used and the cotton-like fiber material obtained from the tire powder mainly consists of these materials.

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-5 table 1

Example heavy oil crude oil light oil kerosene

1 19th 17th 16 16 2 18th 15th 15th 14th 3 18th 17th 16 16 4th 9 9 8th 8th 5 6th 5 4th 4th 6th 8th 7th 6th 6th 7th 8th . 7th δ 5

From the above results it can be seen that the oil binding material described here consists of cotton-like fibers, which were obtained from pulverized old tires, and that the oil absorption capacity of this material is much greater than that of the only pulverized tires (Example 4) and the raw fiber materials forming the cord fabric (Examples 5, 6 and 7), but that there is no significant difference in the absorption capacity between the amorphous and the shaped state of the Material. The reason for this is that the fibers obtained from the scrap tires have a much greater absorption capacity have as raw fibers is that the fibers are folded and twisted in many ways during pulverization and so that a lot of cavities form and that the fibers due to the oils added during the manufacturing process to a great extent are oil-absorbent.

The invention described above provides a new and effective one Method of using old car tires so that the problem of their removal is solved and at the same time one very cheap and extremely effective oil binding material is obtained.

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Claims (2)

Claims I1 ) ι method zux production of an oil binding material, characterized in that old tires are pulverized and that a fibrous material is obtained by removing the rubber particles from the pulverized old tires » 2) Method according to claim 1 "characterized in that that the fibrous material is formed into sheets or mats will. 409818/1079