Back to results
US 8,999,899 B2Granted
Lubricating oil composition for working using sizing press
AssigneeIdemitsu Kosan Co., Ltd.
InventorMasato Kaneko
Life of this patent
Estimating the term…
Abstract
Provided is a lubricating oil composition for sizing which is excellent in machinability and degreasing efficiency and which is excellent in compatibility with an impregnating oil and a sintered metal of oil impregnated bearings. A lubricating oil composition for sizing, including (A) a lubricating base oil having a kinematic viscosity of 0.5 to 100 mm2/s at 40° C. and compounded therein (B) an extreme-pressure agent in an amount of 0.1 to 10% by mass, and (C) a metal deactivator in an amount of 0.01 to 5% by mass, each based on a total amount of the composition.
Claims9
A lubricating oil composition, consisting of:
- (A) a lubricating base oil having a kinematic viscosity of 0.98 to 56 mm2/s at 40° C., which is selected from the group consisting of a hydrogenated product of polyisobutene, a naphthene base oil, a paraffin base mineral oil, alkylbenzene, and a combination thereof, and is present in an amount of from 91 to 99.45% by mass;
- (B) dioleyl hydrogen phosphite, present in an amount of 1 to 8% by mass;
- and
- (C) at least one metal deactivator selected from the group consisting of N-dioctylaminomethyl-1,2,3-benzotriazole, benzotriazole, 2,5-bis(n-nonyldithio)-1,3,4-thiadiazole, and a combination thereof, which is present in an amount of 0.05 to 1% by mass, wherein
- the amount of each of components (A) to (C) is based on a total amount of said lubricating oil composition.
2 more elements
Dependencies are inferred from the claim text.