Lubricating composition
US-2016257904-A1 · Sep 8, 2016 · US
Lubricating oil composition
US2016257902A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016257902-A1 |
| Application number | US-201415032177-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 30, 2014 |
| Priority date | Oct 30, 2013 |
| Publication date | Sep 8, 2016 |
| Grant date | — |
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Abstract
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Provided is a lubricating oil composition containing (A) 70 mass % or more and 95 mass % or less of a poly-α-olefin base oil, (B) 5 mass % or more and 20 mass % or less of an ester-based base oil, and (C) an ester-based defoaming agent, the poly-α-olefin base oil (A) being a polymer of an α-olefin having 8 to 12 carbon atoms. The lubricating oil composition is able to keep excellent defoaming performance over a long period of time and is suitable as a step-up gear oil composition for wind power generation.
First claim
Opening claim text (preview).
1 . A lubricating oil composition, comprising (A) 70 mass % or more and 95 mass % or less of a poly-α-olefin base oil, (B) 5 mass % or more and 20 mass % or less of an ester-based base oil, and (C) an ester-based defoaming agent, wherein the poly-α-olefin base oil (A) is a polymer of an α-olefin comprising 8 to 12 carbon atoms. 2 . The lubricating oil composition according to claim 1 , wherein a sum total of the poly-α-olefin base oil (A) and the ester-based base oil (B) is 90 mass % or more based on a total amount of the composition. 3 . The lubricating oil composition according to claim 1 , wherein the ester-based defoaming agent (C) comprises a (meth)acrylate polymer having a weight average molecular weight of 10,000 or more and 100,000 or less. 4 . The lubricating oil composition according to claim 1 , wherein the poly-α-olefin base oil (A) is a decene oligomer. 5 . The lubricating oil composition according to claim 1 , wherein the ester-based base oil (B) is a polyol ester. 6 . The lubricating oil composition according to claim 1 , which is a step-up gear oil composition for wind power generation.
Assignees
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Classifications
Phosphate esters · CPC title
Anti-foaming property · CPC title
used as base material · CPC title
Molecular weight; Molecular weight distribution · CPC title
Unspecified siloxanes; Silicones · CPC title
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- What does patent US2016257902A1 cover?
- Provided is a lubricating oil composition containing (A) 70 mass % or more and 95 mass % or less of a poly-α-olefin base oil, (B) 5 mass % or more and 20 mass % or less of an ester-based base oil, and (C) an ester-based defoaming agent, the poly-α-olefin base oil (A) being a polymer of an α-olefin having 8 to 12 carbon atoms. The lubricating oil composition is able to keep excellent defoaming p…
- Who is the assignee on this patent?
- Idemitsu Kosan Co
- What technology area does this patent fall under?
- Primary CPC classification C10M169/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).