Alginate-based polymers and products, and their manufacture
AssigneeKeel Labs, Inc.
InventorsGarret D. Figuly, Matthew E. Gande, Minji Kim, Ray William Miller
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Abstract
Polymers comprising an alginate which is ionically crosslinked with unsubstituted dicarboxylate-bridged multivalent cations, products including such polymers, and methods of their manufacture.
Claims21
A polymer comprising an alginate which is ionically crosslinked with unsubstituted, aliphatic dicarboxylate-bridged multivalent cations, wherein the unsubstituted, aliphatic dicarboxylate is derived from an alicyclic dicarboxylic acid selected from the group consisting of cyclopentane dicarboxylic acid, cyclohexane dicarboxylic acid, and norbornane dicarboxylic acid.
A process of preparing a fiber of by a wet spinning process, the fiber comprising a polymer comprising an alginate which is ionically crosslinked with unsubstituted, aliphatic dicarboxylate-bridged multivalent cations, the wet spinning process comprising
- a. Preparing a dope of at least one monovalent metal alginate salt and at least one unsubstituted, aliphatic C2-C20 dicarboxylate in solvent;
- b. Extruding the dope through a spinneret to form fibers;
- c. Drawing the fibers through at least one coagulation bath containing solvent and at least one multivalent cationic crosslinking agent;
- and
- d. Drying the fibers.
A process of preparing a fiber by a wet spinning process which comprises:
- a. Preparing a dope of at least one monovalent metal alginate salt and an at least one unsubstituted, aromatic C2-C20 dicarboxylate in solvent;
- b. Extruding the dope through a spinneret to form fibers;
- c. Drawing the fibers through at least one coagulation bath containing solvent and at least one multivalent cationic crosslinking agent;
- and
- d. Drying the fibers.
Dependencies are inferred from the claim text.