The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Jan. 30, 2018
Aalto University Foundation SR, Aalto, FI;
Helsingin Yliopisto, Helsingin yliopisto, FI;
Herbert Sixta, Aalto, FI;
Michael Hummel, Aalto, FI;
Kadvaël Le Boulch, Aalto, FI;
Ilkka Kilpeläinen, Helsingin yliopisto, FI;
Alistair W.T. King, Helsingin yliopisto, FI;
Jussi Helminen, Helsingin yliopisto, FI;
Sanna Hellsten, Aalto, FI;
Aalto University Foundation sr, Aalto, FI;
Helsingin Yliopisto, Helsingin yliopisto, FI;
Abstract
According to an example aspect of the present invention, there is provided A process for making a cellulose fibre or film comprising the steps of dissolving pulp in an ionic liquid containing a cationic 1,5,7-triazabicyclo[4.4.0]dec-5-enium [TBDH]+ moiety and an anion selected from the group according to Formula a), Formula b) and Formula c), wherein each of R, R, R, R, R, R, R, Rand Ris H or an organyl radical and Xis selected from the group consisting of halides, pseudohalides, carboxylates, alkyl sulphite, alkyl sulphate, dialkylphosphite, dialkyl phosphate, dialkyl phosphonites and dialkyl phosphonates, to provide a spinning dope, extruding the spinning dope through a spinneret to form one or more filaments, and a step selected from the group consisting of spinning cellulose fibres from the solution, and extruding a cellulose film from the solution.