| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-567 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-567
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
1982-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54b8c15ac890ca92574a76b6a1c9acd2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ea2df69c3f70d37d98a504e3fec31b1 |
| publicationDate |
1982-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
FR-2503707-A1 |
| titleOfInvention |
PROCESS FOR THE PREPARATION OF AROMATIC BIS (AROMATIC ANHYDRIDE ETHERS) |
| abstract |
THE PROCESS CONSISTS OF CARRYING OUT AN EXCHANGE REACTION BETWEEN AN IMIDE AND AN ANHYDRIDE, IN THE PRESENCE OF A TRIORGANOAMINE CATALYST. THE INVENTION RESIDES IN THE DISCOVERY OF THE FACT THAT AN EXTRACTION OF THE EXPECTED PRODUCT CAN BE SUBSTITUTED TO BE CARRIED OUT UP TO HERE AT HIGH TEMPERATURE AND PRESSURES, AN EXTRACTION AT LOWER TEMPERATURES AND PRESSURES BY REPEATING THE EXTRACTION OPERATION. |
| priorityDate |
1981-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |