(19)

(11)

EP 2 403 967 A2

(12)

(88) Date of publication A3: 18.11.2010 (43) Date of publication: 11.01.2012 Bulletin 2012/02 (21) Application number: 10749389.2 (22) Date of filing: 05.03.2010

(51) International Patent Classification (IPC):  C22C 21/00(2006.01) C22C 21/02(2006.01) C22F 1/04(2006.01) C22F 1/043(2006.01) (86) International application number: PCT/US2010/026364 (87) International publication number: WO 2010/102206 (10.09.2010 Gazette 2010/36)

(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: 05.03.2009 US 398712 (71) Applicant: United Technologies Corporation Hartford, CT 06101 (US)	(72) Inventor: PANDEY, Awadh B. Jupiter, Florida 33458 (US) (74) Representative: Hall, Matthew Benjamin  Dehns St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)