(19)
(11) EP 4 824 032 A1

(12)

(43) Date of publication:
21.10.2026 Bulletin 2026/43

(21) Application number: 24837750.9

(22) Date of filing: 12.12.2024
(51) International Patent Classification (IPC): 
C07C 209/78(2006.01)
C08G 73/02(2006.01)
 C07C 209/54(2006.01)
C07C 211/49(2006.01)
(52) Cooperative Patent Classification (CPC):
C07C 209/54; C08G 73/0206; C08G 73/0266
 
C-Sets:
C07C 209/54, C07C 211/49;
(86) International application number:
PCT/US2024/059697
(87) International publication number:
WO 2025/128775 (19.06.2025 Gazette 2025/25)
(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:
GE KH MA MD TN

(30) Priority: 13.12.2023 US 202363609528 P

(71) Applicant: Dow Global Technologies LLC
Midland, MI 48674 (US)

(72) Inventors:
  • STEELMAN, D. Keith
    Freeport, Texas 77541 (US)
  • WANG, Hongyi
    Lake Jackson, Texas 77566 (US)
  • BENAVIDES, Rafael Esteban
    Freeport, Texas 77541 (US)

(74) Representative: Beck Greener LLP 
Fulwood House 12 Fulwood Place
London WC1V 6HR
London WC1V 6HR (GB)

   


(54) METHOD FOR MAKING POLYMETHYLENE POLYANILINES USING LEWIS ACID-MODIFIED CLAY CATALYSTS