Lubricant composition for transmission, production method thereof, lubricating method using lubricant composition for transmission, and transmission
AssigneeIdemitsu Kosan Co., Ltd.
InventorKazushi TAMURA
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Abstract
Provided are: a lubricating oil composition for transmissions having a long fatigue life and a low viscosity, which contains a base oil and an olefin copolymer and in which the mass-average molecular weight of the olefin copolymer is 5,000 or more and 30,000 or less, the hydrodynamic radius of the olefin copolymer is 1.00 nm or more and 5.00 nm or less, and the content of the olefin copolymer based on the total amount of the composition is 1.0% by mass or more and 8.0% by mass or less; and a production method for the composition, a lubricating method using a lubricating oil composition for transmissions, and a transmission.
Claims11
A lubricating oil composition for transmissions comprising a base oil and an olefin copolymer, wherein the mass-average molecular weight of the olefin copolymer is 5,000 or more and 30,000 or less, the hydrodynamic radius of the olefin copolymer is 1.00 nm or more and 5.00 nm or less, and the content of the olefin copolymer based on the total amount of the composition is 1.0% by mass or more and 8.0% by mass or less.
A method for producing a lubricating oil composition for transmissions, comprising blending a base oil and an olefin copolymer having a mass-average molecular weight of 5,000 or more and 30,000 or less and having a hydrodynamic radius (Rh) of 1.00 nm or more and 5.00 nm or less, in such a manner that the content (C) of the olefin copolymer based on the total amount of the composition can be 1.0% by mass or more and 8.0% by mass or less.
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Dependencies are inferred from the claim text.