| (19) |
 |
|
(11) |
EP 0 620 264 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
08.02.1995 Bulletin 1995/06 |
| (43) |
Date of publication A2: |
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19.10.1994 Bulletin 1994/42 |
| (22) |
Date of filing: 30.03.1994 |
|
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| (84) |
Designated Contracting States: |
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BE DE ES FR GB IT NL |
| (30) |
Priority: |
14.04.1993 GB 9307652
|
| (71) |
Applicant: BP Chemicals Limited |
|
London EC2M 7BA (GB) |
|
| (72) |
Inventors: |
|
- Kneale, Brian,
BP Chemicals Limited
Sunbury-on-Thames,
Middlesex TW16 7LN (GB)
- Sharp, Christopher,BP Chemicals Limited
Sunbury-on-Thames,
Middlesex TW16 7LN (GB)
|
| (74) |
Representative: Krishnan, Suryanarayana Kalyana et al |
|
BP INTERNATIONAL LIMITED
Patents & Agreements Division
Chertsey Road
Sunbury-on-Thames
Middlesex TW16 7LN
Sunbury-on-Thames
Middlesex TW16 7LN (GB) |
|
| |
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(57) This invention relates to a process for producing lubricating oils from waste or
virgin polymers, especially olefin polymers such as polyethylene. The polymer is first
thermally cracked in a fluidised bed and under inert conditions to form a waxy product
and the latter, optionally after a hydrotreatment step, is catalytically isomerized
and fractionated to recover the lubricating oil. This oil can be used in automotive
applications or can be subjected to further hydrofinishing.