(19)

(11)

EP 4 139 380 A1

(12)

(43) Date of publication: 01.03.2023 Bulletin 2023/09 (21) Application number: 21718913.3 (22) Date of filing: 20.04.2021

(51) International Patent Classification (IPC):  C08J 3/20(2006.01) C08J 3/22(2006.01) (52) Cooperative Patent Classification (CPC): C08J 3/226; C08J 3/203; C08J 2323/06; C08J 2323/12; C08J 2423/12; C08J 2423/06; C08J 2423/08; C08J 2423/14; C08J 2479/02 (86) International application number: PCT/EP2021/060244 (87) International publication number: WO 2021/214060 (28.10.2021 Gazette 2021/43)

(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: KH MA MD TN (30) Priority: 21.04.2020 EP 20170609 (71) Applicant: Smart Coloring GmbH 52074 Aachen (DE)	(72) Inventor: ROBERTZ, Bernd 52074 Aachen (DE) (74) Representative: Michalski Hüttermann & Partner Patentanwälte mbB  Kaistraße 16A 40221 Düsseldorf 40221 Düsseldorf (DE)