Oil-recovering material and process for preparing and using the same
AssigneeHitachi, Ltd.
InventorsTakeshi Hachisu, Akinari Uchida
Life of this patent
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Abstract
Atactic polypropylene is cooled, disintegrated into granules, mixed with cereal powders such as wheat flour, starch powders, etc. thereby to deposit the cereal powders around the granules, and returned to room temperature thereby to prepare an oil-recovering material. The oil-recovering material is spread onto surfaces of sea water with floating oil or surfaces of land area fouled with oil, such as sand beach, etc. to recover the oil therefrom.
Claims6
An oil-recovering material which comprises atactic polypropylene granules and a cereal powder deposited onto the surface of the granules.
A process for preparing an oil-recovering material, which comprises:
- a. cooling atactic polypropylene to a temperature range of -20.degree. C to -30.degree. C thereby making the polypropylene brittle;
- b. disintegrating the cooled atactic polypropylene into granules;
- c. depositing a cereal powder onto the surface of the granules;
- and
- d. returning the cereal powder-deposited atactic polypropylene granules to room temperature.
Dependencies are inferred from the claim text.