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Stabilized enhanced efficiency controllable release calcium cyanamide compositions

  • US 20040016275A1
  • Filed: 05/13/2003
  • Published: 01/29/2004
  • Est. Priority Date: 12/08/1999
  • Status: Abandoned Application
First Claim
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1. A heterogeneous composition, comprising:

  • a core, the core comprising about 0.1 to about 40% of the total weight of the composition and comprising a material selected from the group consisting of calcium oxide, dicyandiamide, calcium carbide and combinations thereof; and

    a shell, the shell comprising about 60 to about 99.9 percent of the total weight of the composition and comprising a material selected from the group consisting of urea, calcium cyanamide and mixtures thereof.

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