A polyalphaolefin having a low halide concentration and a...

C - Chemistry – Metallurgy – 08 – F

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C08F 6/00 (2006.01) C08F 8/04 (2006.01)

Patent

CA 2538079

A method for the processing of a polyalphaolefin feedstock having a concentration of organic halide to thereby yield a polyalphaolefin end-product having a low concentration of organic halide. The method includes a hydrogenation step whereby the polyalphaolefin feedstock is contacted under suitable reaction conditions with a specific hydrogenation catalyst composition that is resistant to halide deactivation. The hydrogenation catalyst comprises a noble metal on a support material comprising silica and alumina. The hydrogenated polyalphaolefin feedstock is further processed to remove the hydrogen halide produced during the hydrogenation step to yield the polyalphaolefin end-product.

L'invention concerne un procédé de traitement d'une charge de polyalphaoléfine possédant une concentration en halogénure organique permettant d'obtenir un produit final de polyalphaoléfine à faible concentration en halogénure organique. Le procédé comporte une étape d'hydrogénation au cours de laquelle la charge de polyalphaoléfine est mise en contact avec une composition catalytique d'hydrogénation spécifique dans des conditions de réaction adéquates, cette composition étant résistante à la désactivation d'halogénure. Le catalyseur d'hydrogénation contient un métal noble sur un matériau support contenant de la silice et de l'alumine. La charge de polyalphaoléfine hydrogénée est ultérieurement traitée afin d'extraire l'halogénure d'hydrogène produit durant l'étape d'hydrogénation permettant d'obtenir un produit final de polyalphaoléfine.

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