Patent ID: 8691273

Claim:
A method for producing hydroxyapatite (HAP) particles in a matrix, the method comprising: preparing an aqueous solution containing a matrix-building polymer and phosphoric acid, preparing an aqueous solution containing calcium hydroxide, feeding the polymer solution into the calcium hydroxide solution while subjecting the latter to mechanical action for synthesizing hydroxyapatite particles embedded in the matrix-building polymer, wherein the synthesis of the hydroxyapatite particles is started at a pH value of 8 to 9 and terminated at a pH value of 6 to 8, resulting in a suspension whose HAP particle length comes to mainly between 0.35 and 5 nm, mainly between 0.35 and 2.5 nm and/or mainly between 0.35 and 1.2 nm, wherein collagen and/or gelatine is used as the matrix building polymer, and wherein the aqueous solution of the matrix-building polymer contains HCl.