| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bfe508ee0f179075f1fe29fe5ed3a37f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_82b3e67fc26eddfd8d02da98d66a7414
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8fd8188c820760ef25334229b5770cf7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7de9ee571d51f83d822588ac9c7b250 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-14 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-14 |
| filingDate |
2005-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ab90d7510c9d828f62f41b5327d41c9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d84a793dadfc14ef94e232a5ca5f283
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ffd764b0557d5d68ed111464a4b9be4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49b625ca63b8c19a17453c99ccd0aac0 |
| publicationDate |
2007-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2007051202-A |
| titleOfInvention |
A method for recycling lactic acid-based biodegradable plastics. |
| abstract |
PROBLEM TO BE SOLVED: To regenerate highly purified lactic acid from lactic acid-based biodegradable plastic waste without impairing the quality due to mixing of impurities. A hydrolysis treatment and a supercritical extraction treatment are performed. In the hydrolysis treatment, an object to be treated containing biodegradable plastic made from lactic acid is reacted with water under a saturated water vapor pressure of about 140 ° C to hydrolyze the biodegradable plastic to produce an aqueous lactic acid solution. In the supercritical extraction treatment, the aqueous lactic acid solution obtained by the hydrolysis treatment is kept in a supercritical environment of carbon dioxide at a temperature of about 60 ° C. and a pressure of about 8 MP, and the supercritical carbon dioxide obtained by melting the aqueous lactic acid solution is used. In this process, the fluid is taken out and returned to room temperature to produce purified lactic acid separated from carbon dioxide. [Selection] Figure 4 |
| priorityDate |
2005-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |