(19)

(11)

EP 3 826 975 A2

(12)

(88) Date of publication A3: 13.08.2020 (43) Date of publication: 02.06.2021 Bulletin 2021/22 (21) Application number: 19870049.4 (22) Date of filing: 04.08.2019

(51) International Patent Classification (IPC):  C04B 18/02(2006.01) C04B 33/135(2006.01) C09K 8/80(2006.01) C04B 33/132(2006.01) C04B 35/626(2006.01) (86) International application number: PCT/IB2019/001249 (87) International publication number: WO 2020/109861 (04.06.2020 Gazette 2020/23)

(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 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: 04.08.2018 US 201862714677 P (71) Applicant: Khan, Abbas 08064 Zwickau (DE)	(72) Inventor: Khan, Abbas 08064 Zwickau (DE)