| (19) |
 |
|
(11) |
EP 1 357 172 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.03.2004 Bulletin 2004/12 |
| (43) |
Date of publication A2: |
|
29.10.2003 Bulletin 2003/44 |
| (22) |
Date of filing: 10.04.2003 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
Designated Extension States: |
|
AL LT LV MK |
| (30) |
Priority: |
23.04.2002 US 374877 P
|
| (71) |
Applicant: ROHM AND HAAS COMPANY |
|
Philadelphia, Pennsylvania 19106-2399 (US) |
|
| (72) |
Inventor: |
|
- Mukkamala, Ravindranath
Houston, Texas 77062 (US)
|
| (74) |
Representative: Kent, Venetia Katherine |
|
Rohm and Haas (UK) Ltd European Operations Patent Dept. Lennig House 2 Mason's Avenue
Croydon, CR9 3NB
Croydon, CR9 3NB (GB) |
|
| |
|
| (54) |
Oil-soluble imine-acid reaction products as asphaltene dispersants in crude oil |
(57) A composition useful for dispersing asphaltenes in crude oil comprising: (a) 0.001%
to 20% of at least one reaction product of (i) an imine; and (ii) an organic acid;
and (b) crude oil.