(19)

(11)

EP 4 267 528 A2

(12)

(88) Date of publication A3: 20.04.2023 (43) Date of publication: 01.11.2023 Bulletin 2023/44 (21) Application number: 21911739.7 (22) Date of filing: 20.12.2021

(51) International Patent Classification (IPC):  C04B 33/00(2006.01) B28C 1/00(2006.01) (52) Cooperative Patent Classification (CPC): C04B 33/04; C04B 2235/9661; C04B 2235/6027; C04B 33/1305; C04B 35/63424; C04B 35/63444; C04B 33/32; C04B 33/34; B28C 1/006; B28C 1/04; B28C 1/08 (86) International application number: PCT/TR2021/051442 (87) International publication number: WO 2022/139760 (30.06.2022 Gazette 2022/26)

(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: 25.12.2020 TR 202021764 (71) Applicant: Esan Eczacibasi Endustriyel Hammaddeler Sanayi ve Ticaret Anonim Sirketi 34852 Maltepe/Istanbul (TR)	(72) Inventors: UCAR DEMIR, Tugba 34852 Maltepe/Istanbul (TR) HALLAC, Burcu Ceren 34852 Maltepe/Istanbul (TR) (74) Representative: Petraz, Gilberto Luigi et al GLP S.r.l. Viale Europa Unita, 17133100 Udine Viale Europa Unita, 17133100 Udine (IT)