(19)

(11)

EP 1 264 038 A2

(12)

(88) Date of publication A3: 03.01.2002 (43) Date of publication: 11.12.2002 Bulletin 2002/50 (21) Application number: 01904736.4 (22) Date of filing: 08.02.2001

(51) International Patent Classification (IPC)7: D21C 1/00, D21C 1/04, D21B 1/02 (86) International application number: PCT/SE0100/257 (87) International publication number: WO 0105/9203 (16.08.2001 Gazette 2001/33)

(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: 09.02.2000 US 501384 01.03.2000 EP 00850037 (71) Applicants: Akzo Nobel N.V. 6800 SB Arnhem (NL) Eka Chemicals AB 445 80 Bohus (SE) SE	(72) Inventors: BRYANT, Patrick, S. Woodstock, GA 30189 (US) SOKOL, John, C. Kennesaw, GA 30152 (US) HUTTO, Dwane, S. Kennesaw, GA 30144 (US) (74) Representative: Halldin, Bo et al Dr. Ludwig Brann Patentbyra ABP.O. Box 17192 104 62 Stockholm 104 62 Stockholm (SE)