Process for the dewaxing of a wax-containing hydrocarbon oil

1,145,427. Dewaxing hydrocarbon oils. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 16 Feb., 1968, No. 7705/68. Heading C5E. Hydrocarbon oils are dewaxed by precipitating the wax in the presence of a polyalkylacrylate of which the average number of carbon atoms in the alkyl side chains is at least...

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Bibliographic Details
Main Authors MEIJ PIETER HENDRIKUS VAN DER, HOEKSTRA TJEERD
Format Patent
LanguageEnglish
Published 12.03.1969
Subjects
CHEMISTRY
CRACKING HYDROCARBON OILS
FUELS
LUBRICANTS
METALLURGY
MINERAL WAXES
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Summary:1,145,427. Dewaxing hydrocarbon oils. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 16 Feb., 1968, No. 7705/68. Heading C5E. Hydrocarbon oils are dewaxed by precipitating the wax in the presence of a polyalkylacrylate of which the average number of carbon atoms in the alkyl side chains is at least 14, followed by separation. The oil may be a lubricating oil such as a residual oil or a waxy raffinate. The precipitation of the wax may be effected by cooling in the presence of a dewaxing solvent, such as a MEK/toluene mixture. Preferably, the polymer is added to the hydrocarbon oil as a solution in the dewaxing solvent. In the examples homopolymers of the following are used: n-hexadecyl acrylate, n-octadecyl acry. late and n-eicosyl acrylate.
Bibliography:Application Number: GB19680007705