Wide-cut synthetic isoparaffinic lubricating oils

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 65/00 (2006.01) C10G 65/04 (2006.01)

Patent

CA 2341607

A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-750 ~F+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650- 750 ~F range and continuously boils to an end point of at least 1050 ~F+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750 ~F range.

On obtient un matériau de base de lubrifiant à large fraction de distillation par hydro-isomérisation et déparaffinage catalytique d'une charge de fraction d'hydrocarbure cireux synthétisé par procédé Fischer-Tropsch. Ce matériau de base renferme tout le déparaffinat dont le point d'ébullition initial est compris entre 650 et 750 ·F. Les huiles lubrifiantes préparées, obtenues par adjonction au matériau de base d'additifs commerciaux pour automobile, présentent toutes les caractéristiques, notamment des caractéristiques basse température, des huiles de carter multigrade pour moteurs à combustion interne. La charge cireuse a un point d'ébullition initial compris entre 650 et 750 ·F et bout sans interruption jusqu'à un point final s'élevant à au moins 1050 ·F. Les hydrocarbures à point d'ébullition inférieur, produits grâce à ce procédé, sont séparés du matériau de base par simple distillation flash. Le matériau de base renferme tout le déparaffinat dont le point d'ébullition initial est compris entre 650 et 750 ·F.

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