(19)
(11) EP 4 452 885 A1

(12)

(43) Date of publication:
30.10.2024 Bulletin 2024/44

(21) Application number: 22843146.6

(22) Date of filing: 19.12.2022
(51) International Patent Classification (IPC): 
C04B 7/52(2006.01)
 C04B 28/04(2006.01)
(52) Cooperative Patent Classification (CPC):
C04B 28/04; C04B 7/52
 
C-Sets:
  1. C04B 28/04, C04B 22/143, C04B 24/2647, C04B 24/32, C04B 40/0608;
  2. C04B 28/04, C04B 22/143, C04B 24/003, C04B 24/2647, C04B 40/0608;
  3. C04B 28/04, C04B 22/143, C04B 40/0608, C04B 2103/32, C04B 2103/50;
(86) International application number:
PCT/EP2022/086761
(87) International publication number:
WO 2023/117979 (29.06.2023 Gazette 2023/26)
(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:
KH MA MD TN

(30) Priority: 20.12.2021 EP 21306861

(71) Applicant: Holcim Technology Ltd
6300 Zug (CH)

(72) Inventors:
  • MOSQUET, Martin
    5113 HOLDERBANK (CH)
  • BRAHMI, Karim
    5113 HOLDERBANK (CH)

(74) Representative: Regimbeau 
20, rue de Chazelles
75847 Paris Cedex 17
75847 Paris Cedex 17 (FR)

   


(54) METHOD OF PRODUCTION OF PREMIX, FOR CONCRETE OR MORTAR, COMPRISING PORTLAND CEMENT, A SUPERPLASTICIZER AND A DEFOAMING AGENT