(19)

(11)

EP 1 280 872 A2

(12)

(88) Date of publication A3: 11.04.2002 (43) Date of publication: 05.02.2003 Bulletin 2003/06 (21) Application number: 01925763.3 (22) Date of filing: 10.05.2001

(51) International Patent Classification (IPC)7: C10M 141/10 (86) International application number: PCT/GB0102/058 (87) International publication number: WO 0108/5878 (15.11.2001 Gazette 2001/46)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 10.05.2000 GB 0011189 (71) Applicant: Great Lakes Chemical (Europe) GmbH 8500 Frauenfeld (CH)	(72) Inventors: HOLT, Alan West DidsburyManchester M20 1HX (GB) MULQUEEN, Gerard SaleCheshire M33 3QG (GB) (74) Representative: McPherson, Alexander et al 15 Valley Road,Weaverham Northwich,Cheshire CW8 3PP Northwich,Cheshire CW8 3PP (GB)