| (19) |
 |
|
(11) |
EP 0 208 361 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
03.08.1988 Bulletin 1988/31 |
| (43) |
Date of publication A2: |
|
14.01.1987 Bulletin 1987/03 |
| (22) |
Date of filing: 17.06.1986 |
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|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT SE |
| (30) |
Priority: |
12.07.1985 GB 8517657
|
| (71) |
Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
|
() |
|
| (72) |
Inventors: |
|
- van Dijk, Frederik Jacob
()
- Schwesinger, Hartmut
()
- Saint, Jean-Paul
()
|
|
| |
|
| (54) |
Process for the manufacture of lubricating base oils from naphthenic feedstocks |
(57) Process for the manufacture of naphthenic base oils having a viscosity index of up
to 100 by catalytically converting a naphthenic feedstock at elevated temperature
and pressure in the presence of hydrogen, in which process a hydrogen partial pressure
of at least 100 bar is applied in the presence of a fluorided, nickel containing catalyst
also comprising tungsten and/or molybdenum.
Good quality naphthenic base oils containing reduced amounts of aromatic compounds,
in particular polycyclic aromatic compounds, are prepared in high yields.