A post-treated additive composition and method of making the...

C - Chemistry – Metallurgy – 10 – M

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C10M 133/16 (2006.01) C07D 207/404 (2006.01)

Patent

CA 2747788

An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting (A) reacting a copolymer of an (i) an unsaturated acidic reagent; and (ii) a mono-olefin, with at least one linking hydrocarbyl di-primary amine, thereby producing a hybrid succinic anhydride copolymer having from about 10 % to about 90 % unreacted anhydride groups; and subsequently (B) reacting the hybrid succinic anhydride copolymer with a second amine compound, thereby producing the succinimide; and (C) reacting the succinimide with at least one post-treating agent selected from a cyclic carbonate, a linear mono-carbonate, a linear poly-carbonate, an aromatic polycarboxylic acid, an aromatic polycarboxylic anhydride, an aromatic polycarboxylic acid ester, or mixtures thereof.

La présente invention concerne une composition d'additif d'huile lubrifiante soluble dans l'huile préparée par le procédé qui comprend (A) la réaction d'un copolymère de (i) un réactif acide insaturé ; et (ii) une mono-oléfine, avec au moins une diamine primaire d'hydrocarbyle de liaison, de manière à produire un copolymère d'anhydride succinique hybride ayant d'environ 10 % à environ 90 % de groupes anhydride n'ayant pas réagi ; et ensuite (B) la réaction du copolymère d'anhydride succinique hybride avec un deuxième composé amine, de manière à produire le succinimide ; et (C) la réaction du succinimide avec au moins un agent de post-traitement choisi parmi un carbonate cyclique, un monocarbonate linéaire, un polycarbonate linéaire, un acide polycarboxylique aromatique, un anhydride polycarboxylique aromatique, un ester d'acide polycarboxylique aromatique, ou des mélanges de ceux-ci.

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