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Process for the preparation of a hydroxyl apatite material

  • US 4,938,938 A
  • Filed: 11/22/1988
  • Issued: 07/03/1990
  • Est. Priority Date: 03/26/1987
  • Status: Expired due to Term
First Claim
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1. A process for the preparation of a carbonaceous hydroxyl apatite material by means of hydrothermal conversion, comprising the following steps:

  • (a) cleaning a hard tissue from organic substances,(b) converting the tissue with an aqueous concentrated solution of (NH4)2 HPO4 solution at a temperature up to 250°

    C.,(c) executing the conversion in an autoclave under saturation steam pressure, and(d) during conversion compensating for the content of Mg2+ -ions by addition of F of ions.

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