| (19) |
 |
|
(11) |
EP 0 120 512 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
28.11.1984 Bulletin 1984/48 |
| (43) |
Date of publication A2: |
|
03.10.1984 Bulletin 1984/40 |
| (22) |
Date of filing: 17.02.1984 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT NL |
| (30) |
Priority: |
18.03.1983 GB 8307522
|
| (71) |
Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
|
() |
|
| (72) |
Inventors: |
|
- Eckert, Rudolf Josef Albrecht
()
- Vos, Bron
()
|
|
| |
|
| (54) |
A wax-containing crude oil or fuel oil comprising a pour point depressant |
(57) A wax-containing crude oil or a wax-containing fuel oil, in particular a wax-containing
residual fuel oil, comprising a small amount of a polymer having predominantly aliphatic
hydrocarbon side chains of at least 14 carbon atoms, characterized in that the polymer
has a branched backbone. This polymer shows an excellent pour point depression at
low concentrations.