| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-83
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-45
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-43 |
| filingDate |
1984-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1988-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1988-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0154092-B1 |
| titleOfInvention |
Process for the preparation of 2,4-dihydroxybenzophenones |
| abstract |
2,4-Dihydroxybenzophenone is prepared substantially quantitatively and in a highly purified form by reacting resorcinol with a benzotrihalide in the presence of an aqueous solution of N-methylpyrrolidone and subsequently subjecting the crude reaction product mixture to vacuum distillation. |
| priorityDate |
1984-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |