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US 6,635,785 B1Granted
Method for synthesizing hydrazodicarbonamide
AssigneeJ&J Chemical Co., Ltd.
InventorsChun-Hyuk Lee, Sang-Jin Han
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Abstract
A method for synthesizing hydrazodicarbonamide (HDCA) by a reaction of monohalobiuret metal salt having the formula 1 or 2, which is derived from biuret, and ammonia, wherein M is a metal and X is a halogen. The monohalobiuret metal salt is inexpensive and easy to synthesize and thus a great yield of HDCA can be obtained from the monohalobiuret metal salt at low cost.
Claims15
A method for synthesizing hydrazodicarbonamide by a reaction of monohalobiuret metal salt having the formula 1 or 2, and ammonia in a solvent
- where M is a metal selected from the group consisting of sodium, potassium and calcium, and X is a halogen selected from the group consisting of fluorine, chloride, bromine and iodine.
Dependencies are inferred from the claim text.