Hydroxyapatite particulate
A hydroxyapatite and particle technology, applied in the direction of phosphorus compounds, phosphorus compounds active ingredients, chemical instruments and methods, etc., can solve the problems of insufficient adhesion and the sustainability of the effect to be solved, and achieve the effect of excellent adhesion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0103] A 10.7% by mass aqueous solution of sodium dihydrogenphosphate dihydrate and a ground calcium hydroxide slurry having a solid concentration of 8.6% by mass (BET specific surface area: 6.7 m 2 / g, reactivity with oxalic acid: 15 minutes and 30 seconds, JP2017-036176A), so that the Ca / P molar ratio is 0.5. Put the aqueous solution of sodium dihydrogen phosphate 2 hydrate into a stainless steel beaker and heat to 60°C with stirring. This temperature is maintained until stirring is complete. Aqueous 10% NaOH was added to adjust the pH to 5.5. To this was added the calcium hydroxide slurry over a period of 30 minutes. After the addition was complete, the mixture was further stirred for 1 hour, and then filtered and washed with water, followed by drying at 80° C., thereby obtaining fine hydroxyapatite particles (powder).
[0104] The obtained fine hydroxyapatite particles were measured for X-ray crystal diffraction, specific surface area, particle size distribution and Ca / ...
Embodiment 2
[0112] A 10.7% by mass aqueous solution of sodium dihydrogenphosphate dihydrate and a ground calcium hydroxide slurry (BET specific surface area: 7.9m 2 / g, reactivity with oxalic acid: 12 minutes 30 seconds, JP2017-036176A), so that the Ca / P molar ratio is 0.5. Put the aqueous solution of sodium dihydrogen phosphate 2 hydrate into a stainless steel beaker and heat to 60°C with stirring. This temperature is maintained until stirring is complete. Aqueous 10% NaOH was added to adjust the pH to 6.0. To this was added the calcium hydroxide slurry over a period of 30 minutes. After the addition was complete, the mixture was further stirred for 1 hour, and then filtered and washed with water, followed by drying at 80° C., thereby obtaining fine hydroxyapatite particles (powder).
[0113] The X-ray crystal diffraction and specific surface area of the obtained fine hydroxyapatite particles were measured in the same manner as in Example 1, and the shape was observed.
[0114] F...
Embodiment 3
[0118] A 10.7% by mass aqueous solution of sodium dihydrogenphosphate dihydrate and a ground calcium hydroxide slurry (BET specific surface area: 7.9m 2 / g, reactivity with oxalic acid: 12 minutes 30 seconds, JP2017-036176A), so that the Ca / P molar ratio is 0.5. Put the aqueous solution of sodium dihydrogen phosphate 2 hydrate into a stainless steel beaker, and heat to 40°C with stirring. This temperature is maintained until stirring is complete. Aqueous 10% NaOH was added to adjust the pH to 5.5. To this was added the calcium hydroxide slurry over a period of 50 minutes. After the addition was complete, the mixture was further stirred for 1 hour, and then filtered and washed with water, followed by drying at 80° C., thereby obtaining fine hydroxyapatite particles (powder).
[0119] The X-ray crystal diffraction and specific surface area of the obtained fine hydroxyapatite particles were measured in the same manner as in Example 1, and the shape was observed.
[0120] ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More