| (19) |
 |
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(11) |
EP 0 949 320 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
06.09.2000 Bulletin 2000/36 |
| (43) |
Date of publication A2: |
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13.10.1999 Bulletin 1999/41 |
| (22) |
Date of filing: 30.03.1999 |
|
| (51) |
International Patent Classification (IPC)7: C10M 137/12, C10M 141/10
// (C10M141/10, 129:40, 133:16, 133:44, 135:04, 137:02, 137:12), C10N10:12, C10N30:06,
C10N40:00 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
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AL LT LV MK RO SI |
| (30) |
Priority: |
09.04.1998 GB 9807843
|
| (71) |
Applicant: ETHYL PETROLEUM ADDITIVES LIMITED |
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Bracknell, Berkshire RG12 2UW (GB) |
|
| (72) |
Inventors: |
|
- Ryan, Helen T.
Barons Court, London W6 8NL (GB)
- Barber, Rodney I.
Bracknell, Berkshire, RG12 7WH (GB)
- Paterson, Craig R.
Newbury, Berkshire (GB)
|
| (74) |
Representative: Cresswell, Thomas Anthony |
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J.A. KEMP & CO. 14 South Square Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB) |
|
| |
|
| (54) |
Lubrifcating compositions |
(57) Use of at least one friction modifier to reduce micropitting of a metal surface,
which comprises lubricating the metal surface with a lubricant composition comprising
the at least one friction modifier, wherein the at least one friction modifier is
selected such that micropitting is reduced when the metal surface is so lubricated.