| (19) |
 |
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(11) |
EP 2 251 401 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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05.01.2011 Bulletin 2011/01 |
| (43) |
Date of publication A2: |
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17.11.2010 Bulletin 2010/46 |
| (22) |
Date of filing: 27.04.2010 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
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Designated Extension States: |
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AL BA ME RS |
| (30) |
Priority: |
16.03.2010 US 724449
15.05.2009 US 178545 P
|
| (71) |
Applicant: Afton Chemical Corporation |
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Richmond, VA 23219 (US) |
|
| (72) |
Inventors: |
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- Mathur, Naresh, C.
Midlothian, VA 23114 (US)
- Guinther, Gregory H.
Richmond, VA 23233 (US)
- Guevremont, Jeffrey M
Glen Allen, VA 23059 (US)
- Lagona, Jason
Richmond, VA 23225 (US)
- Devlin, Mark T.
Richmond, VA 23233 (US)
|
| (74) |
Representative: Dunleavy, Kevin James |
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Knoble & Yoshida LLC
p/o De Vries & Metman
Overschiestraat 180
1062 XK Amsterdam
1062 XK Amsterdam (NL) |
|
| |
|
| (54) |
Lubricant formulations and methods |
(57) The embodiments described herein relate to particular formulations and methods that
may provide improved fuel economy characteristics for an engine lubricant. The compositions
and methods include a (a) a base oil; (b) a zinc dialkyldithiophosphate compound;
and (c) a hydrocarbon soluble metal compound. The hydrocarbon soluble metal compound
is devoid of phosphorus and sulfur atoms and the metal is selected from the group
consisting essentially of selected from the group consisting essentially of cobalt,
nickel, zinc, zirconium, manganese, vanadium, scandium, yttrium, tungsten, gold, platinum,
and iron. A weight ratio of total metal in the lubricant composition from the zinc
dialkyl- dithiophosphate compound and the hydrocarbon soluble metal compound to phosphorus
in the lubricant composition ranges from greater than 1.5 to 1 to 15 to 1.