Glucosamine sulfate potassium chloride and process of preparation thereof
AssigneeJame Fine Chemicals, Inc.
InventorsJames R. Schleck, Christopher M. Burger, Vilas M. Chopdekar
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Abstract
A composition comprising the compound glucosamine sulfate potassium chloride having a purity level of at least about 97% and water present in a maximum amount of about 10 wt. %, based on the weight of the composition. The compound is prepared by contacting glucosamine hydrochloride with potassium sulfate in the presence of water to form an aqueous solution of glucosamine sulfate potassium chloride and thereafter freeze-drying the solution at a temperature and at a reduced pressure for such period of time that at least about 90 wt. % of the water is removed and decomposition of the compound glucosamine sulfate potassium chloride is limited to a maximum of about 3%.
Claims12
A composition comprising:
- (a) the compound glucosamine sulfate potassium chloride, said compound having a purity level of at least about 97%;
- and
- (b) water, present in a maximum amount of about 10 wt. %, based on the weight of the composition.
A process for preparing a composition comprising the compound glucosamine sulfate potassium chloride, said compound having a purity level of at least about 97%, which comprises the steps of:
- (a) contacting glucosamine hydrochloride with potassium sulfate in the presence of water to form an aqueous solution of glucosamine sulfate potassium chloride;
- and
- (b) recovering the compound by freeze-drying the solution from step (a) at a temperature and at a reduced pressure for such period of time that:
- (i) at least about 90 wt. % of the water is removed and (ii) decomposition of the compound glucosamine sulfate potassium chloride is limited to a maximum of about 3%.
Dependencies are inferred from the claim text.