(19)

(11)

EP 2 569 481 A1

(12)

(43) Date of publication: 20.03.2013 Bulletin 2013/12 (21) Application number: 11720566.6 (22) Date of filing: 09.05.2011

(51) International Patent Classification (IPC):  D21C 9/00(2006.01) D21C 9/16(2006.01) D21D 1/20(2006.01) D21D 1/34(2006.01) D21C 9/10(2006.01) D21D 1/02(2006.01) D21D 1/30(2006.01) (86) International application number: PCT/GB2011/000709 (87) International publication number: WO 2011/141692 (17.11.2011 Gazette 2011/46)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 10.05.2010 EP 10162405 (71) Applicant: Catexel Limited London EC4A 3AE (GB)	(72) Inventors: HAGE, Ronald 2333 BD Leiden (NL) YANG, Kimberly, Soraya 2333 BD Leiden (NL) (74) Representative: McNab, Donald C.  Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)