(19)

(11)

EP 4 426 787 A1

(12)

(43) Date of publication: 11.09.2024 Bulletin 2024/37 (21) Application number: 22817807.5 (22) Date of filing: 03.11.2022

(51) International Patent Classification (IPC):  C09D 5/03(2006.01) C09D 7/61(2018.01) C09D 5/14(2006.01) C09D 7/63(2018.01) (52) Cooperative Patent Classification (CPC): C09D 5/14; C09D 5/033; C09D 7/61; C09D 7/63; C08K 2003/0806; C08K 5/03 (86) International application number: PCT/IB2022/060608 (87) International publication number: WO 2023/079488 (11.05.2023 Gazette 2023/19)

(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: 05.11.2021 IN 202131050777 (71) Applicant: Tata Steel Limited Jamshedpur, Jharkhand 831001 (IN)

(72) Inventors: BHADU, Manish Kumar Jamshedpur Jharkhand 831 001 (IN) JAIN, Rachna Jamshedpur Jharkhand 831 001 (IN) KUMARI, Puja Jamshedpur Jharkhand 831 001 (IN) KAJLA, Sachin Jamshedpur Jharkhand 831 001 (IN) SINGH, Arun Kumar Jamshedpur Jharkhand 831 001 (IN) BHAGAT, A N Jamshedpur Jharkhand 831 001 (IN) PAL, Atanu Ranjan Jamshedpur Jharkhand 831 001 (IN) SINHA, Nishith Kumar Jamshedpur Jharkhand 831 001 (IN) KUMAR, Rajesh Jamshedpur Jharkhand 831 001 (IN) SINGH, Ashwini Kumar Jamshedpur Jharkhand 831 001 (IN) (74) Representative: Kador & Partner Part mbB  Corneliusstraße 15 80469 München 80469 München (DE)