(19)

(11)

EP 4 127 288 A1

(12)

(43) Date of publication: 08.02.2023 Bulletin 2023/06 (21) Application number: 21713407.1 (22) Date of filing: 23.03.2021

(51) International Patent Classification (IPC):  D04H 1/4258(2012.01) D04H 1/492(2012.01) D04H 1/4391(2012.01) A61K 8/02(2006.01) (52) Cooperative Patent Classification (CPC): D04H 1/4258; D04H 1/492; D04H 1/4391 (86) International application number: PCT/EP2021/057429 (87) International publication number: WO 2021/197927 (07.10.2021 Gazette 2021/40)

(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: 01.04.2020 EP 20167618 (71) Applicant: LENZING AKTIENGESELLSCHAFT 4860 Lenzing (AT)	(72) Inventors: PORCHER, Alexis 68000 Colmar (FR) MAIER, Thomas 4863 Seewalchen (AT)