Lubricating oil composition
US-2019112544-A1 · Apr 18, 2019 · US
Lubricating oil compositions containing amidine antioxidants
US9752092B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9752092-B2 |
| Application number | US-201514928050-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 30, 2015 |
| Priority date | Oct 30, 2015 |
| Publication date | Sep 5, 2017 |
| Grant date | Sep 5, 2017 |
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- Title
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Abstract
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The present invention provides a lubricating oil composition comprising: (a) a major amount of a lubricating oil, (a) a diarylamine antioxidant, and (b) an amidine compound of Formula (I), wherein R 1 is hydrogen, an alkyl or an aromatic group containing 1-30 carbon atoms; x is from 1 to 5; Y is an optional linking alkyl group; Z is carbon or nitrogen; and R 2 is hydrogen or alkyl groups containing 1-30 carbon atoms. Also provided is a method for lubricating an engine comprising lubricating the engine with said lubricating oil composition.
First claim
Opening claim text (preview).
What is claimed is: 1. A lubricating oil composition comprising: (a) a major amount of a lubricating oil, (b) a diarylamine antioxidant, and (c) an amidine compound of Formula (I), wherein R 1 is hydrogen, an alkyl or an aromatic group containing 1-30 carbon atoms; x is from 1 to 5; Y is an optional linking alkyl group; Z is carbon or nitrogen; and R 2 is hydrogen or alkyl groups containing 1-30 carbon atoms. 2. The lubricating oil composition of claim 1 , wherein the diarylamine antioxidant is selected from the group comprising diphenylamine, phenyl-α-naphthylamine, and alkylated diarylamines. 3. The lubricating oil composition of claim 2 , wherein the diarylamine antioxidant is diphenylamine. 4. The lubricating oil composition of claim 1 , wherein the concentration of the diarylamine antioxidant in the lubricating oil composition is at least about 0.01 wt. %. 5. The lubricating oil composition of claim 1 , wherein the concentration of the diarylamine antioxidant in the lubricating oil composition is 0.01 to 10 wt. %. 6. The lubricating oil composition of claim 1 , wherein the concentration of the diarylamine antioxidant in the lubricating oil composition is 0.2 to 10 wt. %. 7. The lubricating oil composition of claim 1 , wherein the concentration of the diarylamine antioxidant in the lubricating oil composition is 0.1 to 5 wt. %. 8. The lubricating oil composition of claim 1 , wherein the concentration of the amidine compound in the lubricating oil composition is from greater than 0.5 to 5 wt. %. 9. The lubricating oil composition of claim 1 , wherein the concentration of the amidine compound in the lubricating oil composition from greater than 0.5 to 2 wt. %. 10. A lubricating oil composition in claim 1 further comprises a molybdenum-containing antioxidant. 11. A lubricating oil composition in claim 10 , wherein the molybdenum-containing antioxidant is a molybdenum succinimide. 12. A method for lubricating an engine comprising lubricating the engine with a lubricating oil composition comprising: (a) a major amount of a lubricating oil, (b) a diarylamine antioxidant, and (c) an amidine compound of Formula (I), wherein R 1 is hydrogen, an alkyl or an aromatic group containing 1-30 carbon atoms; x is from 1 to 5; Y is an optional linking alkyl group; Z is carbon or nitrogen; and R 2 is hydrogen or alkyl groups containing 1-30 carbon atoms. 13. The method of claim 12 wherein the concentration of the diarylamine antioxidant in the lubricating oil composition is 0.01 to 10 wt. %. 14. The method of claim 12 wherein the concentration of the amidine compound in the lubricating oil composition is from greater than 0.5 to 5 wt. %. 15. The method of claim 12 wherein the lubricating oil composition further comprises a molybdenum-containing antioxidant. 16. The method of claim 15 wherein the molybdenum-containing antioxidant is a molybdenum succinimide.
Assignees
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Classifications
Groups 6 or 16 · CPC title
Imides [having hydrocarbon substituents containing less than thirty carbon atoms] · CPC title
Internal-combustion engines · CPC title
Six-membered rings containing nitrogen and carbon only · CPC title
derived from Mo or W · CPC title
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- What does patent US9752092B2 cover?
- The present invention provides a lubricating oil composition comprising: (a) a major amount of a lubricating oil, (a) a diarylamine antioxidant, and (b) an amidine compound of Formula (I), wherein R 1 is hydrogen, an alkyl or an aromatic group contai…
- Who is the assignee on this patent?
- Chevron Oronite Co
- What technology area does this patent fall under?
- Primary CPC classification C10M133/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 05 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).