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(11)

EP 2 836 525 A1

(12)

(43) Date of publication: 18.02.2015 Bulletin 2015/08 (21) Application number: 13714651.0 (22) Date of filing: 05.04.2013

(51) International Patent Classification (IPC):  C08F 226/02(2006.01) C02F 1/56(2006.01) D21H 17/41(2006.01) B01D 21/01(2006.01) C08F 220/34(2006.01) (86) International application number: PCT/EP2013/057237 (87) International publication number: WO 2013/153004 (17.10.2013 Gazette 2013/42)

(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: 13.04.2012 EP 12164088 (71) Applicant: BASF SE 67056 Ludwigshafen (DE)	(72) Inventors: MILLARD, Pierre-Eric 83352 Altenmarkt (DE) HERTH, Gregor 83308 Trostberg (DE) FRIEDRICH, Stefan 84518 Garching (DE)