Process for preparing polyalkenyl substituted mono-and...

Details Process for preparing polyalkenyl substituted mono-and... Process for preparing polyalkenyl substituted mono-and...

C - Chemistry, Metallurgy

07

C

C07C 57/13 (2006.01) C07C 51/353 (2006.01) C08F 8/00 (2006.01) C08F 8/46 (2006.01) C10L 1/198 (2006.01) C10L 1/238 (2006.01) C10L 1/2383 (2006.01) C10L 10/00 (2006.01) C10M 129/93 (2006.01) C10M 133/56 (2006.01) C08F 110/08 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2197105

A low-sediment, low-tar, chlorine-free thermal process for preparing oil-soluble polyalkenyl derivatives of monounsaturated C3-C10 monocarboxylic acid producing compounds and monounsaturated C4-C10 dicarboxylic acid producing compounds is disclosed. The process involves reacting the mono- or dicarboxylic acid producing compound with a polyalkene at high temperature and under high inert gas partial pressure in the presence of a sediment-inhibiting amount of hydrocarbyl substituted sulfonic acid. The polyalkenyl derivatives are useful per se as additives in lubricating oils, functional fluids, and fuels and are also useful as intermediates in the preparation of other products (e.g., succinimides) useful as additives in lubricating oils, functional fluids, and fuels.

Procédé thermique caractérisé par peu de dépôt et de goudrons, et sans chlore, pour la préparation de dérivés polyalcénylés liposolubles de composés formant des acides monocarboxyliques C3-C10 mono-insaturés et des composés formant des acides dicarboxyliques C4-C10 mono-insaturés. Le procédé consiste à faire réagir le composé formant un acide mono- ou dicarboxylique avec un polyalcène à haute température et sous une pression partielle élevée de gaz inerte, en présence d'une quantité de dérivé de substitution hydrocarbylé d'acide sulfonique empêchant la formation de dépôt. Les dérivés polyalcénylés proprement dits sont utiles comme additifs dans les huiles lubrifiantes, les fluides fonctionnels et les carburants; ils servent également comme intermédiaires dans la préparation d'autres produits (p. ex. de succinimides), utiles comme additifs dans les huiles lubrifiantes, les fluides fonctionnels et les carburants.

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