(19)

(11)

EP 0 804 522 A1

(12)

(43) Date of publication: 05.11.1997 Bulletin 1997/45 (21) Application number: 96901305.0 (22) Date of filing: 17.01.1996

(51) International Patent Classification (IPC):  C10L 1/ 00( . ) C10L 1/ 223( . ) C10L 1/ 16( . ) C10L 1/ 22( . ) C10L 1/ 28( . ) C10L 1/ 14( . ) C10L 1/ 228( . ) C10L 1/ 18( . ) C10L 1/ 24( . ) (86) International application number: PCT/EP1996/000209 (87) International publication number: WO 1996/022343 (25.07.1996 Gazette 1996/34)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 17.01.1995 GB 19950000816 (71) Applicants: EXXON CHEMICAL LIMITED Fareham, Hampshire PO15 7AP (GB) EXXON CHEMICAL PATENTS INC. Linden New Jersey 07036 (US)

(72) Inventors: CAPROTTI, Rinaldo Oxford, Oxfordshire OX2 9HD (GB) TANNER, Tracy Wantage, Oxfordshire OX12 9EN (GB) HENDERSON, Ian Benson, Oxfordshire OX10 6LU (GB) SEARIS, Steven Wantage, Oxfordshire OX12 9BQ (GB) (74) Representative: Hart, Richard Joseph, et al  Exxon Chemical Limited, Exxon Chemical Technology Centre, P.O. Box 1, Milton Hill Abingdon, Oxfordshire OX13 6BB Abingdon, Oxfordshire OX13 6BB (GB)