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US 4,062,890 AGranted
Process for manufacture of isobutylidene diurea
AssigneeSwift Agricultural Chemicals Corporation
InventorJoseph L. Shank
Life of this patent
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Abstract
A process for manufacturing isobutylidene diurea (IBDU) comprising reacting urea with isobutyraldehyde in an aqueous medium and in the presence of a protein-derived emulsifier and an inorganic ammonium salt.
Claims9
A process for manufacturing isobutylidene diurea comprising reacting an aqueous solution of urea with isobutyraldehyde at a pH of from about 7.0-9.0 and in the presence of from about 1-10% by weight of a glue or gelatin protein emulsifier derived from collagen and in the presence of from about 0.5-10% by weight of a polyvalent inorganic ammonium salt reaction accelerator.
Dependencies are inferred from the claim text.