(19)

(11)

EP 2 376 395 A2

(12)

(88) Date of publication A3: 02.09.2010 (43) Date of publication: 19.10.2011 Bulletin 2011/42 (21) Application number: 09835462.4 (22) Date of filing: 24.11.2009

(51) International Patent Classification (IPC):  C03B 5/00(2006.01) C03C 3/19(2006.01) C03C 3/12(2006.01) C03C 3/064(2006.01) C03C 3/062(2006.01) (86) International application number: PCT/US2009/065647 (87) International publication number: WO 2010/074873 (01.07.2010 Gazette 2010/26)

(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: 23.12.2008 US 140333 P (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: LENIUS, Steven J. Saint Paul, Minnesota 55133-3427 (US) ROSENFLANZ, Anatoly Z. Saint Paul, Minnesota 55133-3427 (US) BARNES, Amy S. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)