Lubricating oil additives, lubricating oil compositions containing such additives and processes for producing such additives and compositions
AssigneeNippon Oil Co., Ltd.
InventorKazuhiro Yagishita
Life of this patent
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Abstract
Disclosed are lubricating oil additives obtained by dissolving or reacting (A) a metal salt of a specific phosphorus compound which is insoluble or less soluble in lubricating oils in or with (B) an amine compound so as to be solved in the lubricating oils; a lubricating oil composition containing such an additive; a method of producing the additive and composition.
Claims14
A lubricating oil additive comprising at least one lubricating oil additive selected from the group consisting of (1) to (5) below:
- (1) a lubricating oil additive obtained by dissolving Component (A) in Component (B) comprising an amine-based antioxidant;
- (2) a lubricating oil additive obtained by reacting Component (A) with Component (B) comprising a succinimide and/or derivative thereof;
- (3) a lubricating oil additive obtained by reacting Component (A) with Component (B) comprising an aliphatic amine having 8 to 30 carbon atoms;
- (4) a lubricating oil additive obtained by reacting Component (A) with Component (B) comprising a mixture of an amine-based antioxidant and a succinimide and/or derivative thereof;
- and
- (5) a lubricating oil additive obtained by reacting Component (A) with Component (B) comprising a mixture of an amine-based antioxidant and an aliphatic amine;
- wherein Component (A) comprises at least one compound selected from the group consisting of zinc salts of phosphorus compounds represented by formulas (2):
- wherein X4, X5, X6, and X 7 are each oxygen and R14, R15, and R16 are each independently hydrogen or a hydrocarbon group having 1 to 30 carbon atoms provided that at least one of them is hydrogen.
A process for producing a lubricating oil additive comprising at least one process selected from the group consisting of processes (1) to (5) below:
- (1) dissolving Component (A) in Component (B) comprising an amine-based antioxidant;
- (2) reacting Component (A) with Component (B) comprising a succinimide and/or derivative thereof;
- (3) reacting component (A) with Component (B) comprising an aliphatic amine;
- (4) reacting Component (A) with Component (B) comprising a mixture of an amine-based antioxidant and a succinimide and/or derivative thereof;
- and
- (5) reacting Component (A) with Component (B) comprising a mixture of an amine-based antioxidant and an aliphatic amine having 8 to 30 carbon atoms;
- wherein Component (A) comprises at least one compound selected from the group consisting of zinc salts of phosphorus compounds represented by formula (2):
- wherein X4, X5, X6, and X 7 are each oxygen and R14, R15, and R16 are each independently hydrogen or a hydrocarbon group having 1 to 30 carbon atoms provided that at least one of them is hydrogen.
Dependencies are inferred from the claim text.