(19)

(11)

EP 0 912 616 A1

(12)

(43) Date of publication: 06.05.1999 Bulletin 1999/18 (21) Application number: 97931900.0 (22) Date of filing: 11.07.1997

(51) International Patent Classification (IPC):  C08F 8/ 20( . ) C08F 8/ 26( . ) C08F 8/ 00( . ) C08F 8/ 30( . ) (86) International application number: PCT/GB1997/001876 (87) International publication number: WO 1998/002468 (22.01.1998 Gazette 1998/03)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 17.07.1996 GB 19960015025 (71) Applicant: LUBRIZOL ADIBIS HOLDINGS (UK) LIMITED Wirral, Merseyside L62 4SH (GB)	(72) Inventor: MORETON, David John Hull, East Yorkshire HU8 9BT (GB) (74) Representative: Crisp, David Norman, et al  D. YOUNG & CO. 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)