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公开(公告)号：US11168196B2
公开(公告)日：2021-11-09
申请号：US16471001
申请日：2017-12-20
Applicant: Aalto University Foundation sr
Inventor： Simone Haslinger , Michael Hummel , Herbert Sixta
IPC: C08J11/08
Abstract: According to an example aspect of the present invention, there is provided a method of separating cellulose and polyester from a material comprising a blend of cellulose and polyester, said method comprising the steps of mixing the material comprising a blend of cellulose and polyester with a first portion of superbase-based ionic liquid to dissolve a first portion of cellulose and form a first cellulose solution and a first residue comprising polyester, removing the first residue comprising polyester from the first cellulose solution, and directing the first cellulose solution to one or more further processing steps.
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公开(公告)号：US11549200B2
公开(公告)日：2023-01-10
申请号：US16481071
申请日：2018-01-30
Applicant: Aalto University Foundation sr , Helsingin yliopisto
Inventor： Herbert Sixta , Michael Hummel , Kadvaël Le Boulch , Ilkka Kilpeläinen , Alistair W.T. King , Jussi Helminen , Sanna Hellsten
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, R2, R3, R4, R5, R7, R8, R9 and R10 is H or an organyl radical and X− is 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.
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3.发明授权公开(公告)号：US11486094B2
公开(公告)日：2022-11-01
申请号：US16480315
申请日：2018-02-01
Applicant: Aalto University Foundation sr
Inventor： Herbert Sixta , Yibo Ma , Michael Hummel
Abstract: According to an example aspect of the present invention, there is provided a process for the conversion of cellulosic waste material into a recycled cellulose product comprising the steps of cooking the waste material in a cooking liquor to remove lignin from the waste material and provide a delignified pulp, dissolving the delignified pulp in an ionic liquid to provide a spinning dope suitable for dry jet-wet spinning in an ionic liquid solution, and subjecting the spinning dope to a further processing step to provide a recycled cellulose product, said further step selected from the group of spinning cellulose fibers for use in textiles from the solution, extruding a film product for use in packaging, regenerating the dope as a hydrogel and regenerating the dope as an aerogel.
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Patent Agency Ranking
公开(公告)号：US20200002848A1
公开(公告)日：2020-01-02
申请号：US16481071
申请日：2018-01-30
Applicant: Aalto University Foundation sr , Helsingin yliopisto
Inventor： Herbert Sixta , Michael Hummel , Kadvaël Le Boulch , Ilkka Kilpeläinen , Alistair W.T. King , Jussi Helminen , Sanna Hellsten
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, R2, R3, R4, R5, R7, R8, R9 and R10 is H or an organyl radical and X− is 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.
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5.发明公开公开(公告)号：US20230203717A1
公开(公告)日：2023-06-29
申请号：US17926645
申请日：2020-05-19
Applicant: Aalto University Foundation sr
Inventor： Herbert Sixta , Sherif Elsayed , Inge Schlapp-Hackl , Joanna Witos , Sanna Hellsten , Petri Uusi-Kyyny , Michael Hummel , Ville Alopaeus
Abstract: According to an example aspect of the present invention, there is provided A process for the production of a cellulose filaments or films, comprising the steps of dissolving a cellulose substrate in an ionic liquid consisting of the superbase cation 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium [mTBDH]+ and an anion to produce a solution forming a spinning dope, said anion being derived from an acid which is present at a stoichiometric excess to the superbase, extruding the spinning dope through a spinneret in a coagulation bath containing water to form filaments or films from the solution, withdrawing ionic liquid in an aqueous mixture with water from the coagulation bath, recovering the ionic liquid [mTBDH][OAc] from the aqueous mixture by removing water and optionally recycling the recovered ionic liquid to the dissolution step.
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公开(公告)号：US20190153625A1
公开(公告)日：2019-05-23
申请号：US16261639
申请日：2019-01-30
Applicant: Aalto University Foundation sr , Helsingin Yliopisto
Inventor： Anne Michud , Alistair W.T. King , Arno Parviainen , Herbert Sixta , Lauri Hauru , Michael Hummel , Ilkka Kilpeläinen
Abstract: A method of manufacturing a cellulose-based shaped article. The method comprises subjecting a solution of lignocellulosic material, dissolved in a distillable ionic liquid, to a spinning method, wherein the ionic liquid is a diazabicyclononene (DBN)-based ionic liquid. DBN-based ionic liquids have good dissolution power, high thermal and chemical stability, lack runaway reactions and exhibit low energy consumption, due to low spinning temperatures. The shaped cellulose articles can be used as textile fibres, high-end non-woven fibres, technical fibres, films for packaging, and barriers films in batteries, as membranes and as carbon-fibre precursors.
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公开(公告)号：US20220380941A1
公开(公告)日：2022-12-01
申请号：US17761240
申请日：2020-09-17
Applicant: Aalto University Foundation sr
Inventor： Simone Haslinger , Yingfeng Wang , Eugenia Smirnova , Michael Hummel , Herbert Sixta , Marja Rissanen
Abstract: Colored lyocell type fibers comprising respun coloured recycled fibers and method of producing the same. According to the method a raw-material of colored recycled textile fibers is provided and dissolved in an ionic liquid to provide a spinning dope. By spinning the dope using dry jet-wet spinning colored respun textile fibers can be manufactured. The invention provides for the simultaneous recycling of cellulose fibers and dyes from dyed cotton waste in the form of dyed lyocell fibers.
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公开(公告)号：US20200079925A1
公开(公告)日：2020-03-12
申请号：US16471001
申请日：2017-12-20
Applicant: Aalto University Foundation sr
Inventor： Simone Haslinger , Michael Hummel , Herbert Sixta
IPC: C08J11/08
Abstract: According to an example aspect of the present invention, there is provided a method of separating cellulose and polyester from a material comprising a blend of cellulose and polyester, said method comprising the steps of mixing the material comprising a blend of cellulose and polyester with a first portion of superbase-based ionic liquid to dissolve a first portion of cellulose and form a first cellulose solution and a first residue comprising polyester, removing the first residue comprising polyester from the first cellulose solution, and directing the first cellulose solution to one or more further processing steps.
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