(19)
(11) EP 4 045 000 A1

(12)

(43) Date of publication:
24.08.2022 Bulletin 2022/34

(21) Application number: 20789553.3

(22) Date of filing: 07.10.2020
(51) International Patent Classification (IPC): 
A61K 8/41(2006.01)
A61Q 19/00(2006.01)
C08L 1/02(2006.01)
 A61K 8/73(2006.01)
C08B 1/00(2006.01)
(52) Cooperative Patent Classification (CPC):
C08B 1/003; C08L 1/02
(86) International application number:
PCT/EP2020/078043
(87) International publication number:
WO 2021/073961 (22.04.2021 Gazette 2021/16)
(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: 14.10.2019 EP 19203057

(71) Applicant: BASF SE
67056 Ludwigshafen am Rhein (DE)

(72) Inventors:
  • MÜLLER, Jan-Ole
    67056 Ludwigshafen am Rhein (DE)
  • OSCHMANN, Bernd
    67056 Ludwigshafen am Rhein (DE)
  • KUENNE, Holger
    67056 Ludwigshafen am Rhein (DE)
  • WITT, Timo
    67056 Ludwigshafen am Rhein (DE)

(74) Representative: BASF IP Association 
BASF SE GBI-C006
67056 Ludwigshafen
67056 Ludwigshafen (DE)

   


(54) SOLUTION OF CELLULOSE IN A QUATERNARY AMMONIUM COMPOUND AND A CO-SOLVENT