Title:
潤滑油用添加剤組成物
Document Type and Number:
Japanese Patent JP5537179
Kind Code:
B2
Abstract:
The present invention provides an additive composition for a lubricating oil that comprises a metal salt of a phosphorus-containing compound, is easy to produce, does not have adverse effects such as causing rubber seals to swell, and is excellent in storage stability. The additive composition comprises a metal salt of a phosphorus-containing compound represented by formula (1) in an amount of 10 to 90 percent by mass on the basis of the composition, contained in a hydrocarbon solvent selected from a mineral oil, a hydrocarbon synthetic oil and a mixture thereof, the hydrocarbon solvent having a 100°C kinematic viscosity of 0.5 to 4.5 mm 2 /s, a %C A of 3 or less, and a sulfur content of 0.05 percent by mass or less:
wherein X 1 and X 2 are each independently oxygen or sulfur, R 1 , R 2 , R 3 , and R 4 are each independently a straight-chain alkyl group having 3 to 12 carbon atoms, the average of the carbon number is 5 or greater, and M is a divalent metal atom.
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Inventors:
Kazuhiro Yagishita
Application Number:
JP2010029340A
Publication Date:
July 02, 2014
Filing Date:
February 12, 2010
Export Citation:
Assignee:
jx Nikko Nisseki Energy Co., Ltd.
International Classes:
C10M161/00; C10M137/10; C10M143/00; C10N10/04; C10N20/00; C10N20/02; C10N30/00
Domestic Patent References:
| JP63099082A | ||||
| JP2006299279A |
Foreign References:
| WO2009116225A1 | ||||
| WO2008123227A1 | ||||
| WO2008123226A1 |
Attorney, Agent or Firm:
Junyuki Morita