Grease composition

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United States of America Patent

PATENT NO 12054690
APP PUB NO 20230124121A1
SERIAL NO

17907371

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Abstract

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A grease composition which contains a base oil (A), a urea-based thickener (B), a sarcosine derivative (C), and a fatty acid zinc salt (D), wherein particles containing the urea-based thickener (B) in the grease composition satisfies Requirement (I). The base oil (A) is a blended base oil containing a high viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A1). A low viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A2). An ultra-high viscosity hydrocarbon-based synthetic oil has a number average molecular weight (Mn) of 2,500 to 4,500 and a specific kinematic viscosity (A3). A 40° C. kinematic viscosity of the base oil (A) is 500 mm2/s to 1,500 mm2/s. A viscosity index of the base oil (A) is 140 or more. A content of the fatty acid zinc salt (D) is 10 mass % to 20 mass % based on a total amount of the grease composition.

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU KOSAN CO LTD2-1 OTEMACHI 1-CHOME CHIYODA-KU TOKYO 100-8321

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Watanabe, Go Chiba, JP 29 105

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