Patent classifications
D01F13/02
REUSING OF LYOCELL-CELLULOSE FOR LYOCELL-METHODS
Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.
REUSING OF LYOCELL-CELLULOSE FOR LYOCELL-METHODS
Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.
METHOD OF REUSING A MIXED TEXTILE COMPRISING CELLULOSE AND SYNTHETIC PLASTIC
A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting.
METHOD OF REUSING A MIXED TEXTILE COMPRISING CELLULOSE AND SYNTHETIC PLASTIC
A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting.
METHOD OF REUSING A TEXTILE MATERIAL WHICH COMPRISES CELLULOSE
Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.
METHOD OF REUSING A TEXTILE MATERIAL WHICH COMPRISES CELLULOSE
Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.
Separation and upcycling of cellulose-containing blended waste
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.
Process for Making Cellulose Fibre or Film
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.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.7, R.sup.8, R.sup.9 and R.sup.10 is H or an organyl radical and X.sup. 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.
Process for Making Cellulose Fibre or Film
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.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.7, R.sup.8, R.sup.9 and R.sup.10 is H or an organyl radical and X.sup. 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.
A VERSATILE METHOD TO VALORIZE CELLULOSIC WASTE TEXTILES
A process for valorization of a crude waste textile material comprising cotton fibers, viscose fibers and/or other cellulosic textile fibers into cellulose pulp. The process comprises the steps of: providing a comminuted textile material comprising cotton fibers, viscose fibers and/or other cellulosic fibers; mixing the comminuted textile material with at least one solvent in the form of an aqueous metal halide (MeX), comprising MeX in a concentration in the range of 60 to 80 wt %, or in the form of a metal halide hydrate having the formula MeX.Math.n(H.sub.2O), wherein the metal Me is Li.sup.+, Zn.sup.2+, Mg.sup.2+, or Ca.sup.2+, wherein the halide X is Cl.sup. (chlorine) or Br.sup. (bromine), and wherein the integer n is 2 to 6, such as 3 or 4; heating the mixture of the comminuted textile material and the metal halide to dissolve, at least partly, the comminuted textile material to provide a solution of cellulose and MeX; and precipitating cellulose pulp from the solution of cellulose and MeX, preferably by adding an aqueous solution to the solution of cellulose and MeX to precipitate cellulose pulp; recovering cellulose pulp.