(19)

(11)

EP 2 176 435 A1

(12)

(43) Date of publication: 21.04.2010 Bulletin 2010/16 (21) Application number: 08827006.1 (22) Date of filing: 04.08.2008

(51) International Patent Classification (IPC):  C22B 5/10(2006.01) C22B 1/245(2006.01) C01B 33/025(2006.01) (86) International application number: PCT/US2008/072050 (87) International publication number: WO 2009/020890 (12.02.2009 Gazette 2009/07)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 07.08.2007 US 954328 P (71) Applicant: Dow Corning Corporation Midland, Michigan 48686-0994 (US)	(72) Inventors: BLACK, Victor Sanford, MI 48657 (US) BURNS, Gary Midland, MI 48640 (US) HERBERT, Robert Midland, MI 48640 (US) YILMAZ, Sefa Saginaw, MI 48603 (US) (74) Representative: Thomson, Craig Richard  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow Strathclyde G5 8PL Glasgow Strathclyde G5 8PL (GB)