Mineral base oil, lubricant composition, internal combustion engine, lubricating method of internal combustion engine

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United States of America

PATENT NO 11312917
APP PUB NO 20190002794A1
SERIAL NO

16064806

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Abstract

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Provided is a mineral base oil satisfying the following requirements (I) to (III):

    Requirement (I): a kinematic viscosity at 100° C. is 2 mm2/s or more and less than 7 mm2/s;Requirement (II): a viscosity index is 100 or more; andRequirement (III): a temperature gradient Δ|η*| of complex viscosity between two temperature points −10° C. and −25° C. is 60 Pa·s/° C. or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%.

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU KOSAN CO LTDTOKYO TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anzai, Hisao Kisarazu, JP 27 207
Kasai, Moritsugu Chiba, JP 19 70
Kuroda, Norihiro Chiba, JP 4 11

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