Patents Assigned to Swift Agricultural Chemicals Corporation
  • Patent number: 4105749
    Abstract: Phosphate ora matrix is treated to recover P.sub.2 O.sub.5 values. The matrix may be the phosphate ore as it is mined, or it may be residue formed upon dewatering benefication slimes. Without being subjected to beneficiation, this matrix is slurried with an organic solvent in a slurry vessel. When the slurry is mixed with a strong mineral acid, a system having a single liquid phase is formed with the organic solvent serving as a vehicle for distribution of the mineral acid which in turn solubilizes P.sub.2 O.sub.5 values for their extraction from the matrix. Thereafter the P.sub.2 O.sub.5 values are separated from the solid phase and then removed from the organic solvent.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: August 8, 1978
    Assignee: Swift Agricultural Chemicals Corporation
    Inventors: Robert A. Wilson, David J. Raden
  • Patent number: 4062890
    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.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: December 13, 1977
    Assignee: Swift Agricultural Chemicals Corporation
    Inventor: Joseph L. Shank