(19)
(11) EP 4 143 279 A1

(12)

(43) Date of publication:
08.03.2023 Bulletin 2023/10

(21) Application number: 21720541.8

(22) Date of filing: 28.04.2021
(51) International Patent Classification (IPC): 
C10M 145/14(2006.01)
(52) Cooperative Patent Classification (CPC):
C10M 145/14; C10M 2203/1025; C10M 2205/04; C10M 2209/04; C10M 2209/084; C10N 2030/02
 
C-Sets:
C10M 2203/1025, C10N 2020/02;
(86) International application number:
PCT/EP2021/061045
(87) International publication number:
WO 2021/219679 (04.11.2021 Gazette 2021/44)
(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
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 30.04.2020 EP 20172357

(71) Applicant: Evonik Operations GmbH
45128 Essen (DE)

(72) Inventors:
  • SCHÖLLER, Katrin
    65812 Bad Soden (DE)
  • ZIEGLER, Fabian
    64289 Darmstadt (DE)
  • TSCHEPAT, Wolfgang
    64291 Darmstadt (DE)
  • LIPPERT, Sarah
    64285 Darmstadt (DE)
  • DOERFEL, Mara
    64823 Groß-Umstadt (DE)

(74) Representative: Evonik Patent Association 
c/o Evonik Industries AG IP Management Bau 1042A/PB 15 Paul-Baumann-Straße 1
45772 Marl
45772 Marl (DE)

   


(54) PROCESS FOR THE PREPARATION OF DISPERSANT POLYALKYL (METH)ACRYLATE POLYMERS