(19)

(11)

EP 1 492 866 A2

(12)

(88) Date of publication A3: 24.06.2004 (43) Date of publication: 05.01.2005 Bulletin 2005/01 (21) Application number: 03722375.7 (22) Date of filing: 01.04.2003

(51) International Patent Classification (IPC)7: C11D 17/00 (86) International application number: PCT/EP2003/003376 (87) International publication number: WO 2003/085190 (16.10.2003 Gazette 2003/42)

(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: 09.04.2002 GB 0208112 (71) Applicant: HUNTSMAN INTERNATIONAL LLC Salt Lake City,Utah 84108 (US)	(72) Inventors: HAWKINS, John KinverSouth Staffs. DY7 6JF (GB) SLEVIN, Christopher David Birmingham B15 3HS (GB) (74) Representative: Lawrence, John  Barker Brettell,138 Hagley Road,Edgbaston Birmingham B16 9PW Birmingham B16 9PW (GB)