(19)

(11)

EP 2 994 547 A1

(12)

(43) Date of publication: 16.03.2016 Bulletin 2016/11 (21) Application number: 14707198.9 (22) Date of filing: 28.02.2014

(51) International Patent Classification (IPC):  C21D 6/00(2006.01) C22C 38/04(2006.01) C22C 38/24(2006.01) C22C 38/02(2006.01) C22C 38/22(2006.01) (86) International application number: PCT/EP2014/054010 (87) International publication number: WO 2014/131907 (04.09.2014 Gazette 2014/36)

(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 Designated Extension States: BA ME (30) Priority: 01.03.2013 EP 13382069 (71) Applicant: Rovalma, S.A. 08228 Terrassa, Barcelona (ES)	(72) Inventor: VALLS ANGLÉS, Isaac E-08228 Terrassa (Barcelona) (ES) (74) Representative: Elzaburu S.L.P.  C/ Miguel Angel, 21 28010 Madrid 28010 Madrid (ES)