| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-88 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-88 |
| filingDate |
1996-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aab2e16e4299e0f8ba9d4086d7149c67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3e3aeb3e333923ea087b5593ec0f1a24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e63cef3fd108d3b559e06c7fff2f386 |
| publicationDate |
1998-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-19625693-A1 |
| titleOfInvention |
Process for cleaning phthalide |
| abstract |
The present invention relates to a process for purifying phthalide contamined with carboxylic acids and/or their derivatives, in which polyethyene glycol and/or polypropylene glycol is added to the phthalide to be purified and then subjected to fractional distillation. |
| priorityDate |
1996-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |