(19)

(11)

EP 1 567 625 A1

(12)

(43) Date of publication: 31.08.2005 Bulletin 2005/35 (21) Application number: 03789750.1 (22) Date of filing: 13.11.2003

(51) International Patent Classification (IPC)7: C11C 5/00 (86) International application number: PCT/US2003/036241 (87) International publication number: WO 2004/046286 (03.06.2004 Gazette 2004/23)

(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: 15.11.2002 US 426762 P (71) Applicant: STEPAN COMPANY Northfield, IL 60093 (US)	(72) Inventors: SCHROEDER, John Racine, WI 53405 (US) SHAPIRO, Irene Buffalo Grove, IL 60089 (US) NELSON, Jeffrey Lake Bluff, IL 60044 (US) (74) Representative: Schnappauf, Georg et al Geibelstrasse 6 81679 München 81679 München (DE)