(19)

(11)

EP 1 567 620 A1

(12)

(43) Date of publication: 31.08.2005 Bulletin 2005/35 (21) Application number: 03796080.4 (22) Date of filing: 03.12.2003

(51) International Patent Classification (IPC)7: C10L 1/04 (86) International application number: PCT/EP2003/050935 (87) International publication number: WO 2004/050804 (17.06.2004 Gazette 2004/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 03.12.2002 JP 2002351205 (71) Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 2596 HR The Hague (NL)	(72) Inventors: KOIDE, Shyunichi,Showa Shell Sekiyu K.K. Tokyo 135-8074 (JP) KOMATSU, Yasuyuki,Showa Shell Sekiyu K.K. Tokyo 135-8074 (JP) SHIBUYA, Masahiko,Showa Shell Sekiyu K.K. Tokyo 135-8074 (JP)