| (19) |
 |
|
(11) |
EP 1 624 043 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
24.06.2009 Bulletin 2009/26 |
| (43) |
Date of publication A2: |
|
08.02.2006 Bulletin 2006/06 |
| (22) |
Date of filing: 10.06.2005 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI
SK TR |
|
Designated Extension States: |
|
AL BA HR LV MK YU |
| (30) |
Priority: |
28.07.2004 US 591722 P
11.10.2004 US 963216
|
| (71) |
Applicant: Afton Chemical Corporation |
|
Richmond, VA 23219 (US) |
|
| (72) |
Inventor: |
|
- Henly, Timothy J.
Maidens, VA 23102 (US)
|
| (74) |
Representative: Dunleavy, Kevin James |
|
Knoble & Yoshida LLC
p/o De Vries & Metman
Overschiestraat 180
1062 XK Amsterdam
1062 XK Amsterdam (NL) |
|
| |
|
| (54) |
Power transmission fluids with enhanced extreme pressure and antiwear characteristics |
(57) A fluid composition is described for extreme pressure applications. The fluid composition
includes a base oil, and an additive composition comprising sulfurized fatty oil in
an amount sufficient to provide at least 1,000 ppm sulfur to the fluid composition,
and dialkyl thiadiazole in an amount sufficient to provide at least 500 ppm sulfur
to the fluid composition. Fluids containing these respective amounts of sulfurized
fatty oil and dialkyl thiadiazole exhibit failure loads which equal or exceed 794
kg (1750 pounds) at 100°C and 150°C, respectively, as measured according to a Falex
EP test of ASTM D-3233.