Process for dewaxing waxy oils produced by hydrotreating

Details Process for dewaxing waxy oils produced by hydrotreating Process for dewaxing waxy oils produced by hydrotreating

C - Chemistry, Metallurgy

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G

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C10G 67/04 (2006.01) C10G 73/04 (2006.01) C10G 73/06 (2006.01)

Patent

CA 1171810

ABSTRACT OF THE DISCLOSURE An improved process for dewaxing waxy oils which have been produced by hydrotrcating to produce a base oil suitable for the production of high-quality lubri- cating oil. The dewaxing process is carried out utilizing a solvent and a dewaxing aid. The dewaxing aids are alkyl acrylate polymers which improve the characteristics of the filtration stage of the dewaxing operation resulting in improved filtration rate and yield. The preferred alkyl acrylate polymers contain an alkyl group containing the number of carbon atoms "n" defined by the following equation 6.4 + 0.235t ? n ? 7.4 + 0. 235t.

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