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(11)

EP 2 897 767 A1

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(43) Date of publication: 29.07.2015 Bulletin 2015/31 (21) Application number: 13838975.4 (22) Date of filing: 17.09.2013

(51) International Patent Classification (IPC):  B24D 3/34(2006.01) C09C 1/68(2006.01) C09K 3/14(2006.01) (86) International application number: PCT/US2013/060022 (87) International publication number: WO 2014/047014 (27.03.2014 Gazette 2014/13)

(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: 21.09.2012 US 201261703815 P (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: QIAN, Julie, Y. Saint Paul, MN 55133-3427 (US) JOSEPH, William, D. Saint Paul, MN 55133-3427 (US) LOPER, Stephen, C. Saint Paul, MN 55133-3427 (US) (74) Representative: Isarpatent  Patentanwälte Behnisch Barth Charles Hassa Peckmann & Partner mbB Friedrichstrasse 31 80801 München 80801 München (DE)