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(11)

EP 4 441 023 A1

(12)

(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22822446.5 (22) Date of filing: 25.11.2022

(51) International Patent Classification (IPC):  C07C 51/42(2006.01) C07C 59/06(2006.01) C07C 53/10(2006.01) C07C 53/08(2006.01) C07C 51/02(2006.01) C07C 59/08(2006.01) B01D 61/44(2006.01) (52) Cooperative Patent Classification (CPC): C07C 51/02; C07C 51/42; B01D 61/445   C-Sets: C07C 51/42, C07C 53/10; C07C 51/42, C07C 59/08; C07C 51/42, C07C 59/06; C07C 51/02, C07C 53/08; C07C 51/02, C07C 59/06; C07C 51/02, C07C 59/08; (86) International application number: PCT/EP2022/083326 (87) International publication number: WO 2023/099353 (08.06.2023 Gazette 2023/23)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 02.12.2021 EP 21212041 (71) Applicant: Nobian Chemicals BV 3811 LP Amersfoort (NL)	(72) Inventors: DIRIX, Carolina Anna Maria Christina 3811 LP Amersfoort (NL) LAMMERS, Hans 3811 LP Amersfoort (NL) VAN LARE, Cornelis Elizabeth Johannus 3811 LP Amersfoort (NL) RENKEMA, Eilertdina Henderika 3811 LP Amersfoort (NL) (74) Representative: LKGlobal UK Ltd.  Cambridge House Henry Street Bath BA1 1BT Bath BA1 1BT (GB)