| (19) |
 |
|
(11) |
EP 2 071 013 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
12.10.2011 Bulletin 2011/41 |
| (43) |
Date of publication A2: |
|
17.06.2009 Bulletin 2009/25 |
| (22) |
Date of filing: 02.12.2008 |
|
| (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 MT NL NO PL
PT RO SE SI SK TR |
|
Designated Extension States: |
|
AL BA MK RS |
| (30) |
Priority: |
03.12.2007 US 949083
|
| (71) |
Applicant: Infineum International Limited |
|
Abingdon
Oxfordshire OX13 6BB (GB) |
|
| (72) |
Inventors: |
|
- Bloch, Ricardo
Infineum USA L.P.
Linden, NJ 07036 (US)
- Boese, Doyle Harold
Infineum USA L.P.
Linden, NJ 07036 (US)
- Martella, David
Infineum USA L.P.
Linden, NJ 07036 (US)
|
| (74) |
Representative: Goddard, Frances Anna et al |
|
PO Box 1
Milton Hill
Abingdon, Oxfordshire OX13 6BB
Abingdon, Oxfordshire OX13 6BB (GB) |
|
| |
|
| (54) |
Lubricant composition comprising a flow improver having a bi-modal side-chain distribution |
(57) A lubricant composition is disclosed. The lubricant composition is made up of (a)
an API Group III base stock; (b) one or more semi-crystalline viscosity modifier;
and (c) one or more LOFIs having a side-chain distribution which satisfies the following
requirements: (1) the distribution contains side chains ranging from C
8 to C
18 with an average carbon number ranging from 12.4 to 14.4; (2) the side chain distribution
is bi-modal with a lower portion of the bi-modal distribution made up primarily of
C
12 and an upper portion of the distribution made up primarily of C
16, C
18 or combinations thereof; (3) the total mole % of the upper portion of the distribution
must be less than that of the lower portion of the distribution; and (4) the amount
of C
12 on the side chain must be at least 40 mole % of the total side chain distribution.