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(11)

EP 2 411 341 A1

(12)

(43) Date of publication: 01.02.2012 Bulletin 2012/05 (21) Application number: 10710413.5 (22) Date of filing: 17.03.2010

(51) International Patent Classification (IPC):  C03C 8/02(2006.01) C08K 3/40(2006.01) C03C 3/093(2006.01) C08K 3/00(2006.01) C03C 3/085(2006.01) C03C 3/064(2006.01) (86) International application number: PCT/GB2010/050460 (87) International publication number: WO 2010/109218 (30.09.2010 Gazette 2010/39)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 25.03.2009 GB 0905130 (71) Applicant: Johnson Matthey Public Limited Company London EC4A 4AB (GB)	(72) Inventors: EADON, Desmond, Gerard Staffordshire DE13 7FE (GB) NEWMAN, Alan, John Staffordshire ST3 5RX (GB) SINCLAIR, Michael, John Cheshire CW6 9AA (GB) WINBOW, Howard David Derbyshire DE6 1RY (GB) (74) Representative: Whitcombe, Nicole Jane  Johnson Matthey PLC Intellectual Property Department Gate 20 Orchard Road Royston Hertfordshire SG8 5HE Royston Hertfordshire SG8 5HE (GB)