http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-212341-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_61bf7971b38c12c6bac9e93c35e5fdf3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-447 |
| filingDate | 1991-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85317fe84d91d3b6dbcd0307d22e5250 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27b1eff28cd15443055ce7732b82538b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c05e75da6b8bab8ebc9babe78b8132c |
| publicationDate | 1996-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-212341-B |
| titleOfInvention | Method for producing bioceramics of various porosity and pore size having hydroxil-apatite, beta-whitlocite or alpha-whitlocite as main phase |
| abstract | According to the present invention, the hydroxylapatite, β-whitlokit or α-whitlokit main phase bioceramics are prepared by: a) from 75 to 95% by weight, 2-300 micrometers of hydroxyapatite burned at a temperature of 1050-1100 ° C, in a known manner; a 70-90% water-based hydroxylapatite precipitate, or b) from 75 to 95% by weight, from 2 to 500 µm of β-whitlite burned at 1150-1200 ° C, containing from 5 to 25% by weight of a known 70-90% water by known method; The β-whitlockite precipitate is added, and the material obtained by process a) or b) is granulated, stored for at least 7 days, pressed with a pressure of 50 to 200 MPa and pasted into pastilles with a pressure of 43-48 vol% porosity, 110-130 In order to produce MPa compressed hydroxylapatite bioceramic, the pastilles obtained from the starting materials of process a) at a temperature of 950-1100 ° C for 110 hours, preferably 1050 ° C. pellets of β-whitlockite having a porosity of 40-45% by volume at 90-120 MPa, prepared from starting materials according to process b) at a temperature of 1100-1200 ° C for 1-10 hours, preferably 1150 ° C. For the production of α-whitlockite bioceramics with a porosity of 170 MPa at a temperature of about 3.5 to 4 hours or at a temperature of less than 1% by volume, pastilles obtained from the starting materials a) or b) at a temperature of 1400 to 1450 ° C for 110 hours, preferably at 1450 ° C for 3.5 to 4 hours. EN 212 341 Scope of the description: 6 pages |
| priorityDate | 1991-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.