Processes for treating coral and coating an object
First Claim
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1. A process for coating an object with a divalent metal phosphate, the process comprising the steps of:
- (a) preparing a sol containing a divalent metal phosphonate complex wherein a divalent metal is coordinated to a phosphonate compound according to formula (1)
R—
C(O)—
O—
P(O)R1—
O—
C(O)—
.R2
(1)wherein R, R1 and R2, which may be the same or different, are selected from the group consisting of hydrogen, substituted alkyl groups and unsubstituted alkyl groups; and
(b) dipping the object into the sol;
(c) heating the dipped object in order to remove any solvent; and
(d) firing the heated object to allow conversion of the divalent metal phosphonate complex into the divalent metal phosphate.
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Abstract
The present invention generally relates to an improved process for the hydrothermal conversion of coral into hydroxyapatite, a process for coating an object with hydroxyapatite, a process for coating an object with a divalent metal phosphate and uses of objects prepared by these processes. Following the processes according to the present invention, the resultant hydroxyapatite has greater strength and bioactivity than that of the coral prior to its conversion.
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Citations
15 Claims
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1. A process for coating an object with a divalent metal phosphate, the process comprising the steps of:
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(a) preparing a sol containing a divalent metal phosphonate complex wherein a divalent metal is coordinated to a phosphonate compound according to formula (1)
R—
C(O)—
O—
P(O)R1—
O—
C(O)—
.R2
(1)wherein R, R1 and R2, which may be the same or different, are selected from the group consisting of hydrogen, substituted alkyl groups and unsubstituted alkyl groups; and (b) dipping the object into the sol; (c) heating the dipped object in order to remove any solvent; and (d) firing the heated object to allow conversion of the divalent metal phosphonate complex into the divalent metal phosphate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification