(19)

(11)

EP 0 988 354 A1

(12)

(43) Date of publication: 29.03.2000 Bulletin 2000/13 (21) Application number: 98926448.6 (22) Date of filing: 08.06.1998

(51) International Patent Classification (IPC)7: C10G 11/00, C10G 51/02, C07C 4/06 (86) International application number: PCT/US9811/875 (87) International publication number: WO 9856/873 (17.12.1998 Gazette 1998/50)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 10.06.1997 US 872585 (71) Applicant: EXXON CHEMICAL PATENTS INC. Baytown, TX 77520-5200 (US)	(72) Inventors: CHEN, Tan-Jen Kingwood, TX 77345 (US) ROWE, J., T. Pasadena, TX 77506 (US) (74) Representative: Dew, Melvyn John et al Exxon Chemical Europe Inc.P.O.Box 105 1830 Machelen 1830 Machelen (BE)