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Magnesium ammonium phosphate cement composition

  • US 7,942,963 B2
  • Filed: 03/19/2010
  • Issued: 05/17/2011
  • Est. Priority Date: 07/03/2000
  • Status: Expired due to Fees
First Claim
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1. A magnesium ammonium phosphate cement produced by a process comprising:

  • providing an ammonium salt;

    providing a powder mixture having molar quantities of the components calcium (Ca), magnesium (Mg) and orthophosphate (P) in the mixture in the ranges 1.00<

    Ca/P<

    1.50 and 0<

    Mg/P<

    0.50;

    mixing the ammonium salt and the powder mixture with a mixing liquid to form a paste and achieve an uniform distribution of the liquid in the powder mixture; and

    reacting the components therein to form a microcrystalline magnesium ammonium phosphate cement.

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