WATER-SOLUBLE HYALURONIC ACID GEL AND METHOD FOR PRODUCING SAME
First Claim
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1. A water-soluble hyaluronic acid gel comprising hyaluronic acid, a polyhydric alcohol, an acid and 0 to 10% by mass of a water-soluble organic solvent.
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Abstract
To provide a water-soluble hyaluronic acid gel which does not contain a large amount of an organic solvent, wherein hyaluronic acid is not chemically modified.
A water-soluble hyaluronic acid gel which contains hyaluronic acid, a polyhydric alcohol, an acid, and 0-10% by mass of a water-soluble organic solvent.
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18 Claims
- 1. A water-soluble hyaluronic acid gel comprising hyaluronic acid, a polyhydric alcohol, an acid and 0 to 10% by mass of a water-soluble organic solvent.
- 13. A method for producing a water-soluble hyaluronic acid gel, comprising a step of mixing hyaluronic acid, a polyhydric alcohol, an acid, 0 to 10% by mass of a water-soluble organic solvent and water together to prepare a gel-forming aqueous solution.
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17. A method for producing a water-soluble hyaluronic acid gel, comprising:
- a step of mixing hyaluronic acid, a polyhydric alcohol, 0 to 10% by mass of a water-soluble organic solvent and water together to prepare an aqueous hyaluronic acid solution; and
a step of adding an acid to the aqueous hyaluronic acid solution.
- a step of mixing hyaluronic acid, a polyhydric alcohol, 0 to 10% by mass of a water-soluble organic solvent and water together to prepare an aqueous hyaluronic acid solution; and
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18. A method for producing a water-soluble hyaluronic acid gel, comprising:
- a step of mixing hyaluronic acid, a polyhydric alcohol, 0 to 10% by mass of a water-soluble organic solvent and water together to prepare an aqueous hyaluronic acid solution;
a step of drying the aqueous hyaluronic acid solution; and
a step of adding an acid to the dried aqueous hyaluronic acid solution.
- a step of mixing hyaluronic acid, a polyhydric alcohol, 0 to 10% by mass of a water-soluble organic solvent and water together to prepare an aqueous hyaluronic acid solution;
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