http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008297307-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f8877d26e7e712d48efb03a75bd073f3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 |
| filingDate | 2008-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a63ce675fc7a2033b595086ab166ada http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26ff26e8ce441092ddd78af9d0c86861 |
| publicationDate | 2008-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2008297307-A |
| titleOfInvention | Method for purifying α-hydroxycarboxylic acid dimer cyclic ester |
| abstract | An economical and efficient purification method for a crude α-hydroxycarboxylic acid dimer cyclic ester is provided. A specific high-boiling polar organic solvent is added to a crude α-hydroxycarboxylic acid dimer cyclic ester, and the mixture is heated to a temperature of 230 ° C. or higher under normal pressure or reduced pressure. A dimer cyclic ester is made into a homogeneous solution with the high boiling polar organic solvent, and heating is continued in a liquid phase state of the homogeneous solution to convert the α-hydroxycarboxylic acid dimer cyclic ester into the high boiling polar organic solvent. A method for purifying an α-hydroxycarboxylic acid dimer cyclic ester, wherein the dimer cyclic ester is recovered from the distillate. [Selection figure] None |
| priorityDate | 1996-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.