| (19) |
 |
|
(11) |
EP 0 348 236 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.02.1990 Bulletin 1990/07 |
| (43) |
Date of publication A2: |
|
27.12.1989 Bulletin 1989/52 |
| (22) |
Date of filing: 23.06.1989 |
|
| (51) |
International Patent Classification (IPC)4: C10M 163/00, C10M 141/10, C10M 141/12
// (C10M163/00, 133:08, 135:24, 137:02, 159:12, 159:12),(C10M141/10, 133:08, 133:52,
133:52, 135:24, 137:02),(C10M141/12, 133:08, 135:24, 137:02, 139:00), C10N30:06, C10N40:04,
C10N60:12 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
24.06.1988 US 211428
|
| (71) |
Applicant: EXXON CHEMICAL PATENTS INC. |
|
Florham Park
New Jersey 07932 (US) |
|
| (72) |
Inventors: |
|
- Ryer, Jack
East Brunswick
New Jersey 08816 (US)
- Watts, Raymond Frederick
New Jersey 07853 (US)
|
| (74) |
Representative: Mansell, Keith Rodney |
|
Exxon Chemical Limited
European Patents and Licences
Exxon Chemical Technology Centre
P O Box 1
GB-Abingdon, Oxfordshire OX13 6BB
GB-Abingdon, Oxfordshire OX13 6BB (GB) |
|
| |
|
| (54) |
Synergistic combination of additives useful in power transmitting compositions |
(57) A mutually compatible combination of additives and their use to impart anti-wear,
dispersancy and friction modification to power transmission compositions, particularly
automatic transmission fluids, is disclosed. The additives comprise organic phosphite
ester such as dioleyl monohydrogenphosphite; hydroxyl amine compound, such N-octadecyl
diethanolamine, N-octadecyloxypropyldiethanol amine, or N-octadecylthiopropyl diethanolmine,
and dispersant such as that derived by reacting a polyisobutenyl succinimide with
a phosphosulfurized terpene, either alone or in combination with a borated, aminated
dispersant such as that derived by reacting a polyisobutenyl succinimide with boric
acid.