(19)
(11) EP 4 798 674 A1

(12)

(43) Date of publication:
02.09.2026 Bulletin 2026/36

(21) Application number: 24761384.7

(22) Date of filing: 02.08.2024
(51) International Patent Classification (IPC): 
C09K 8/584(2006.01)
C09K 8/594(2006.01)
(52) Cooperative Patent Classification (CPC):
C09K 8/584; C09K 8/594
(86) International application number:
PCT/US2024/040657
(87) International publication number:
WO 2025/090154 (01.05.2025 Gazette 2025/18)
(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: 25.10.2023 US 202363593049 P

(71) Applicants:
  • Dow Global Technologies LLC
    Midland, MI 48674 (US)
  • Rohm and Haas Company
    Collegeville, PA 19426 (US)
  • Board of Regents, The University of Texas System
    Austin, TX 78701 (US)

(72) Inventors:
  • KATIYAR, Amit
    Lake Jackson, Texas 77566 (US)
  • KNIGHT, Troy E.
    Lake Jackson, Texas 77566 (US)
  • YU, Wanglin
    Lake Jackson, Texas 77566 (US)
  • NGUYEN, Quoc
    Austin, Texas 78712-1585 (US)
  • TAHA, Motaz
    Austin, Texas 78712-1585 (US)
  • MILLER, Daniel S.
    Collegeville, Pennsylvania 19426 (US)

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

   


(54) ENHANCED OIL RECOVERY PROCESS WITH HYDROCARBON-SOLUBLE SURFACTANT