Grease composition for speed reducer part of on-vehicle electric component

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United States of America Patent

PATENT NO 12077721
APP PUB NO 20220340833A1
SERIAL NO

17762140

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Abstract

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The invention provides a grease composition for a speed reducer part of an on-vehicle electric component, the grease composition containing a base oil and a thickener, wherein

    the base oil is poly-α-olefin or a mixed oil of poly-α-olefin and mineral oil having a kinematic viscosity of 4 to 19 mm2/s at 100° C. and a pour point of −30° C. or lower,the thickener is a mixture of a diurea compound expressed by formula (1) and a diurea compound expressed by formula (2)R1—NHCONH—R2—NHCONH—R1  (1)R3—NHCONH—R2—NHCONH—R3  (2)wherein R1 is a straight-chain alkyl group having 8 or 18 carbon atoms, R2 is a divalent aromatic hydrocarbon group having 6 to 15 carbon atoms, and R3 is an aryl group having 6 to 7 carbon atoms, anda penetration of the grease composition is 220 to 280.

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Patent Owner(s)

Patent OwnerAddress
KYODO YUSHI CO LTDFUJISAWA-SHI KANAGAWA 251-8588

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishizeki, Tsubasa Kiryu, JP 2 0
Nagasawa, Yoshiyuki Kameyama, JP 17 34
Nakamura, Osamu Kiryu, JP 486 6724
Tsutsui, Daisuke Yokohama, JP 8 14
Yamazaki, Satoshi Fujisawa, JP 288 3180
Yoshida, Hiroyuki Kiryu, JP 395 3543

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