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(11)

EP 3 551 706 A1

(12)

(43) Date of publication: 16.10.2019 Bulletin 2019/42 (21) Application number: 17825380.3 (22) Date of filing: 29.11.2017

(51) International Patent Classification (IPC):  C09D 5/33(2006.01) B32B 27/20(2006.01) B05D 7/14(2006.01) E04D 3/16(2006.01) B32B 15/20(2006.01) B32B 15/08(2006.01) E04F 13/12(2006.01) (86) International application number: PCT/EP2017/080784 (87) International publication number: WO 2018/108529 (21.06.2018 Gazette 2018/25)

(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 Designated Validation States: MA MD (30) Priority: 12.12.2016 NO 20161966 (71) Applicant: Norsk Hydro ASA 0240 Oslo (NO)	(72) Inventors: LACAU, Anica N-3080 Holmestrand (NO) G.J. TEN CATE, Mattijs 53127 Bonn (DE) BJERKAAS, Hans 3402 Lier (NO) KOLÅS, Tore N-7014 Trondheim (NO) GILBU TILSET, Bente 1395 Hvalstad (NO) GRANDCOLAS, Mathieu 0188 Oslo (NO) (74) Representative: Berg, André  Norsk Hydro ASA Intellectual Property Department 0240 Oslo 0240 Oslo (NO)