(19)
(11) EP 3 939 938 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
05.04.2023 Bulletin 2023/14

(45) Mention of the grant of the patent:
22.02.2023 Bulletin 2023/08

(21) Application number: 20907395.6

(22) Date of filing: 20.11.2020
(51) International Patent Classification (IPC): 
C01G 49/06(2006.01)
C07C 309/46(2006.01)
 C07C 303/22(2006.01)
(52) Cooperative Patent Classification (CPC):
C07C 303/22; C01G 49/06; C01P 2004/03; C01P 2004/32; C01P 2004/62; C01P 2006/62; C01P 2006/63; C01P 2006/64; C01P 2006/80
 
C-Sets:
C07C 303/22, C07C 309/46;
(86) International application number:
PCT/CN2020/130584
(87) International publication number:
WO 2021/129268 (01.07.2021 Gazette 2021/26)

(54)

METHOD FOR SIMULTANEOUSLY PREPARING IRON OXIDE RED PIGMENT AND AROMATIC AMINE

VERFAHREN ZUR GLEICHZEITIGEN HERSTELLUNGH VON EISENOXIDROTPIGMENT UND AROMATISCHEM AMIN

MÉTHODE DE PRÉPARATION SIMULTANÉE D'UN PIGMENT ROUGE À BASE D'OXYDE DE FER ET D'AMINE AROMATIQUE

(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

(30) Priority: 25.12.2019 CN 201911351348

(43) Date of publication of application:
19.01.2022 Bulletin 2022/03

(73) Proprietor: Tsaker Huayu Chemical Company Limited
Cangzhou, Hebei 061600 (CN)

(72) Inventors:
  • DUAN, Weidong
    Cangzhou, Hebei 061600 (CN)
  • ZHANG, Guofu
    Cangzhou, Hebei 061600 (CN)
  • WEI, Yu
    Cangzhou, Hebei 061600 (CN)

(74) Representative: Petculescu, Ana-Maria 
Bayramoglu Law Offices LLC Türkiye Irtibat Ofisi, Mira Office, Kanuni Sultan Süleyman Boulevard, 5387. street Beytepe, floor 12, no:50
06800 Cankaya, Ankara
06800 Cankaya, Ankara (TR)


(56) References cited: : 
CN-A- 1 458 134
CN-A- 105 085 332
CN-A- 111 233 045
US-A- 4 142 915
 CN-A- 103 193 690
CN-A- 109 761 860
US-A- 4 139 398
US-A- 4 153 472
   
  • HE, Lifang et al.: "Current Situation and Outlook of Aromatic Amine Synthesis", Yunnan Metallurgy, vol. 34, no. 3, 30 June 2005 (2005-06-30), pages 57-62, XP055824060, ISSN: 1006-0308
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).