| (19) |
 |
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(11) |
EP 0 743 351 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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22.01.1997 Bulletin 1997/04 |
| (43) |
Date of publication A2: |
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20.11.1996 Bulletin 1996/47 |
| (22) |
Date of filing: 15.05.1996 |
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| (51) |
International Patent Classification (IPC)6: C10G 65/12 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB IT NL |
| (30) |
Priority: |
19.05.1995 EP 95401178
|
| (71) |
Applicant: SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V. |
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2596 HR Den Haag (NL) |
|
| (72) |
Inventors: |
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- Gilson, Jean-Pierre
76530 Grand Couronne (FR)
- Grandvallet, Pierre
76530 Grand Couronne (FR)
- Wardle, Peter James
76530 Grand Couronne (FR)
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| |
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| (54) |
Process for the preparation of lubricating base oils |
(57) Process for the preparation of a lubricating base oil comprising the steps of:
(a) contacting a hydrocarbon oil feed in a first stage with hydrogen in the presence
of a catalyst comprising at least one Group VIII noble metal component on an refractory
oxide support;
(b) contacting the liquid effluent in a second stage with hydrogen in the presence
of a hydroconversion catalyst under hydroconversion conditions, and
(c) recovering at least one lubricating base oil having a viscosity index of at least
80.