(19)

(11)

EP 1 159 393 A1

(12)

(43) Date of publication: 05.12.2001 Bulletin 2001/49 (21) Application number: 00913321.6 (22) Date of filing: 03.03.2000

(51) International Patent Classification (IPC)7: C11D 17/00 (86) International application number: PCT/US0002/531 (87) International publication number: WO 0052/128 (08.09.2000 Gazette 2000/36)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.03.1999 US 263463 22.07.1999 US 359555 (71) Applicant: Cognis Corporation Gulph Mills, PA 19406 (US)	(72) Inventor: GROSS, Stephen, F. Souderton, PA 18964 (US) (74) Representative: Weber, Thomas, Dr.Dipl.-Chem. et al Patentanwältevon Kreisler-Selting-Werner,Postfach 10 22 41 50462 Köln 50462 Köln (DE)