N-phenyl-maleimides and N-phenyl-succinimides and their use in a herbicidal and/or plant growth regulating action
Anhydrous complexes of PVP and hydrogen peroxide Patent #: 5008093
ApplicationNo. 908107 filed on 07/02/1992
US Classes:548/543, Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.)252/186.29, With organic material423/265, WITH ADDITIVE423/272, For hydrogen peroxide524/438Nonmetal compound DNRM
ExaminersPrimary: Springer, David B.
Attorney, Agent or Firm
International ClassesC07D 403/14
AbstractUrea-hydrogen peroxide-polyvinylpyrrolidone (PVP) in the form of a free-flowing powder is stable against decomposition in water and alcohol solvents. The product is obtained by spraying an aqueous solution of urea-hydrogen peroxide onto a fluidized bed of PVP and drying; it contains about 5%-20% by weight H2 O2 and less than about 5% water. The urea-hydrogen peroxide solution is applied onto the fluidized PVP bed at a predetermined rate, suitably about 0.5-30 g of solution/minute/kg PVP in the bed, and, preferably, about 1-3 g/min/kg PVP.