Cellulose-containing materials
AssigneeWool Research Organisation of New Zealand, Inc.
InventorMirshahin Seyed Saleh
Life of this patent
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Abstract
Disclosed is a process for solubilising cellulose and coagulating the resulting solution to form a cellulose-containing material. The process comprises contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution, coagulating the solution to provide a solid material, treating the solid material, and isolating the solid material after treatment, to provide the cellulose-containing material. The process can further comprise solubilising protein and coagulating the resulting solution to form a cellulose/protein-containing material. The cellulose-containing materials and cellulose/protein-containing materials can be produced, for example, as reconstituted fibres and films.
Claims53
A process for producing a cellulose-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in an oxidising solution;
- (d) freezing the oxidising solution in which the solid material is immersed;
- and
- (e) isolating the solid material from (d) to provide the cellulose-containing material.
A process for producing a cellulose-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in water;
- (d) freezing the water in which the solid material is immersed;
- and
- (e) isolating the solid material from (d) to provide the cellulose-containing material.
A process for producing a cellulose-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in an aqueous formate salt solution;
- and
- (d) isolating the solid material from (c) to provide the cellulose-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in an oxidising solution;
- (d) freezing the oxidising solution in which the solid material is immersed;
- and
- (e) isolating the solid material from (d) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in water;
- (d) freezing the water in which the solid material is immersed;
- and
- (e) isolating the solid material from (d) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) extruding the solution from (a) into a coagulation bath to provide a solid material;
- (c) immersing the solid material from (b) in an aqueous formate salt solution;
- and
- (d) isolating the solid material from (c) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) contacting the solution from (a) with a protein source to provide a solution;
- (c) extruding the solution from (b) into a coagulation bath to provide a solid material;
- (d) immersing the solid material from (c) in an oxidising solution;
- (e) freezing the oxidising solution in which the solid material is immersed;
- (f) isolating the solid material from (e) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) contacting the solution from (a) with a protein source to provide a solution;
- (c) extruding the solution from (b) into a coagulation bath to provide a solid material;
- (d) immersing the solid material from (c) in water;
- (e) freezing the water in which the solid material is immersed;
- and
- (f) isolating the solid material from (e) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) contacting the solution from (a) with a protein source to provide a solution;
- (c) extruding the solution from (b) into a coagulation bath to provide a solid material;
- (d) immersing the solid material from (c) in an aqueous formate salt solution;
- and
- (e) isolating the solid material from (d) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) adding water to the solution from (a) to provide a precipitate;
- (c) isolating the precipitate;
- (d) drying the precipitate from (c);
- (e) dissolving the precipitate from (d) in formic acid to provide a solution;
- (f) extruding the solution from (e) into a coagulation bath to provide a solid material;
- (g) immersing the solid material from (f) in an oxidising solution;
- (h) freezing the oxidising solution in which the solid material is immersed;
- and
- (i) isolating the solid material from (h) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) adding water to the solution from (a) to provide a precipitate;
- (c) isolating the precipitate;
- (d) drying the precipitate from (c);
- (e) dissolving the precipitate from (d) in formic acid to provide a solution;
- (f) extruding the solution from (e) into a coagulation bath to provide a solid material;
- (g) immersing the solid material from (f) in water;
- (h) freezing the water in which the solid material is immersed;
- and
- (i) isolating the solid material from (h) to provide the cellulose/protein-containing material.
A process for producing a cellulose/protein-containing material comprising:
- (a) contacting a cellulose source and a protein source with a solvent comprising zinc ions and formic acid to provide a solution;
- (b) adding water to the solution from (a) to provide a precipitate;
- (c) isolating the precipitate;
- (d) drying the precipitate from (c);
- (e) dissolving the precipitate from (d) in formic acid to provide a solution;
- (f) extruding the solution from (e) into a coagulation bath to provide a solid material;
- (g) immersing the solid material from (f) in an aqueous formate salt solution;
- and
- (h) isolating the solid material from (g) to provide the cellulose/protein-containing material.
Dependencies are inferred from the claim text.