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US 2012/0098269 A1Published application
Grease composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorYukitoshi Fujinami
Life of this patent
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Abstract
A grease composition includes a base oil and a thickener. The base oil includes a hydrocarbon-based synthetic oil at 40 mass % or more, and a component A at 20 mass % to 70 mass %, the component A having a kinematic viscosity of 70 mm2/s or less at 40 degrees C. A kinematic viscosity of the base oil is in a range from 200 mm2/s to 2000 mm2/s at 40 degrees C. A worked penetration of the grease composition is in a range from 220 to 350.
Claims21
A grease composition, comprising:
- a base oil;
- and
- a thickener,
- wherein the base oil comprises a hydrocarbon-based synthetic oil at 40 mass % or more and a component A at from 20 mass % to 70 mass %,
- a kinematic viscosity of the component A is 70 mm2/s or less at 40 degrees C.,
- a kinematic viscosity of the base oil is from 200 mm2/s to 2000 mm2/s at 40 degrees C., and
- a worked penetration of the grease composition is from 220 to 350.
4 more elements
(canceled)
Dependencies are inferred from the claim text.