Oil coagulant products and methods of use therefor

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/32 (2006.01) C02F 1/40 (2006.01) C02F 1/68 (2006.01)

Patent

CA 2240501

Oil coagulant compositions, and methods of using such compositions to coagulate the oil that has been spilled on water are prepared from a thermal reaction utilizing an oil component selected from the group consisting of glycrides, fatty acids, alkenes and alkynes, and a copolymer component. Representative polymers include, for example, isobutyl methacrylate polymers, and representative oil components include, for example, glycerides such as those derived from a drying oil such as linseed oil. The composition of the present invention floats on the water surface and coagulates oil independent of both agitation and temperature, and can be used in both salt and fresh water. After the coagulant has coagulated the spilled oil, the floating coagulated oil can be readily removed from the water by mechanical means such that at least 99.9 % of the oil is removed from the water and only a faint trace of oil remains in the water. An alternate way of using the composition is to incorporate it into a porous substrate, which substrate is then applied to the spilled oil. Preferably, the porous substrate is a floatable material, enabling the product to keep afloat Group 5 oils or asphalt.

L'invention concerne des compositions qui coagulent le pétrole et leurs procédés d'utilisation pour coaguler le pétrole qui s'est répandu sur l'eau. La fabrication repose sur une réaction thermique pour laquelle on utilise un constituant du pétrole choisi parmi le groupe des glycérides et des acides gras, des alcènes et des alcynes, et un constituant à base de copolymère. En l'occurence, les polymères et les constituants du pétrole représentatif englobent par exemple respectivement des polymères à base de méthacrylate isobutylique et des glycérides tels que ceux dérivés d'une huile siccative comme l'huile de lin. Le type de composition décrit dans l'invention flotte à la surface de l'eau et coagule le pétrole indépendamment de l'agitation et de la température. En outre, le coagulant peut être utilisé à la fois dans l'eau salée et dans l'eau douce. Une fois que le coagulant a coagulé le pétrole répandu, on peut retirer facilement au moins 99,9 % du pétrole coagulé qui flotte à la surface de l'eau en utilisant des moyens mécaniques et il ne reste dans l'eau que de faibles traces de pétrole. On peut aussi utiliser les compositions considérées en les intégrant à un substrat poreux qui est ensuite appliqué sur le pétrole répandu. De préférence, le substrat poreux en question est un matériau flottant qui permet au produit de maintenir en flottation des pétroles du groupe 5 ou de l'asphalte.

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