http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2653295-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b2136ad3742072843758e5b86a1e01e9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-823 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L27-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L101-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L17-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L27-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-148 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-08 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L101-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L17-00 |
| filingDate | 2007-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dcba971278fa9ba61223482d5e5a6e80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7cf893682f63804341e890bffb51b9a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57610e7c8ced343f7dea691ab2025996 |
| publicationDate | 2008-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2653295-A1 |
| titleOfInvention | Bio-degradable/absorbable polymer having reduced metal catalyst content, and process for production thereof |
| abstract | Disclosed are: a safe bio-degradable/absorbable polymer having an extremely low metal catalyst content while retaining properties desired for a medical implant; a process for the production of the polymer; and a method for reducing the content of a metal catalyst in a bio-degradable/absorbable polymer, which can be applied on an industrial scale. Specifically, disclosed is a process for the production of a bio-degradable/absorbable polymer having a content of a metal catalyst of less than 1 ppm in terms of a metal, comprising the following steps (1) and (2): (1) copolymerizing lactide and .epsilon.-caprolactone at a molar ratio ranging from 40/60 to 60/40 in the presence of a metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a ratio ranging from 25/75 to 45/55 by volume at a temperature lower than 40~C, and then drying the copolymer. Also specifically disclosed is a process for the production of a bio-degradable/absorbable polymer having a content of a metal catalyst of less than 1 ppm in terms of a metal, comprising the following steps (1) and (2): (1) copolymerizing lactide and .epsilon.-caprolactone at a molar ratio ranging from 65/35 to 85/15 in the presence of a metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a ratio ranging from 45/55 to 55/45 by volume at a temperature lower than 40~C, and then drying the copolymer. |
| priorityDate | 2006-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.