A lubricating oil composition for an internal combustion engine contains a component (A) of a polyalphaolefin having a kinematic viscosity at 100 degrees C. of 5.5 mm 2 /s or less, a CCS viscosity at âˆ’35 degrees C. of 3000 mPAÂ·s or less and a NOACK of 12 mass % or less, and a component (B) of a mineral oil having a viscosity index of 120 or more. The component (A) is contained at a content of 10 mass % or more of a total amount of the composition.

Claims

10 · 2 independent · depth 3

10 granted claims

›1.independentA lubricating oil composition for an internal combustion engine, comprising:na component (A) of a polyalphaolefin having a kinematic viscosity at 100 …+8

›2.↳ 1The lubricating oil composition according to claim 1, wherein a mixed base oil provided by blending the components (A) and (B) has a kinematic viscosi…d2+1

›3.↳ 1The lubricating oil composition according to claim 1, wherein the NOACK of the composition is 13 mass % or less and the CCS viscosity at âˆ’35 degrees…d2

›4.↳ 1The lubricating oil composition according to claim 1, wherein the component (B) is present in the composition in an amount of 50 mass % or more relati…d2

›6.↳ 1The lubricating oil composition according to claim 1, wherein the component (A) is a trimer.d2

›8.↳ 1A method for lubricating an internal combustion engine comprising contacting said engine with the lubricating oil composition for an internal combusti…d2+2

›5.independentThe lubricating oil composition according to 1, wherein the component (A) is a polyalphaolefin formed by polymerizing at least one alpha-olefin having…

Classifications

10 codes

IPC · International Patent Classification

Section C — Chemistry; metallurgy

C10M171/00
C10M111/04
C10M171/04
C10M171/02

USPC · US Patent Classification

208/19585/10585/13585/12208/18585/1

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Pamela H Weiss

art unit 1771 · TC 1700

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›Priority documents — 1

Type	Document	Date
related publication	US 20130023705 A1	24 Jan 2013

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