(19)
(11) EP 4 739 717 A2

(12)

(88) Date of publication A3:
03.04.2025

(43) Date of publication:
13.05.2026 Bulletin 2026/20

(21) Application number: 24836576.9

(22) Date of filing: 03.07.2024
(51) International Patent Classification (IPC): 
C08F 2/10(2006.01)
C08F 220/56(2006.01)
C08F 6/00(2006.01)
 C08F 2/01(2006.01)
C08J 3/075(2006.01)
(52) Cooperative Patent Classification (CPC):
C08F 4/04; C08F 2/38; C08F 2/40
 
C-Sets:
C08F 220/56, C08F 220/06;
(86) International application number:
PCT/US2024/036757
(87) International publication number:
WO 2025/010348 (09.01.2025 Gazette 2025/02)
(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: 05.07.2023 US 202363511978 P
21.09.2023 FI 20236044

(71) Applicant: KEMIRA OYJ
00180 Helsinki (FI)

(72) Inventor:
  • HOLAPPA, Susanna
    02271 Espoo (FI)

(74) Representative: Page White Farrer 
Bedford House 21a John Street
London WC1N 2BF
London WC1N 2BF (GB)

   


(54) PREPARATION OF A HIGH REACTION TEMPERATURE DPAM HAVING IMPROVED STANDARD VISCOSITY AND WATER SOLUBILITY