| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-567 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-567 |
| filingDate |
1985-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1986-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_538433d7f69e8ca31f4ba979f8bc347d |
| publicationDate |
1986-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4571425-A |
| titleOfInvention |
Method for making aromatic bis(ether anhydride) |
| abstract |
A method is provided for making aromatic bis(ether anhydrides) by effecting an exchange reaction between aromatic bis(ether imide) and phthalic anhydride in the presence of water and an exchange catalyst. The separation and recovery of phthalimide and aromatic bis(ether anhydride) is achieved in a stripper-reactor using a vaporous mixture of water and the exchange catalyst. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006029671-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5122617-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112262131-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10407397-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102276563-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6881815-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8080671-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6576770-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2019245898-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11661416-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008063208-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6590108-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7153394-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11459314-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004063897-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6498224-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004015328-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6528663-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6710187-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11787776-B2 |
| priorityDate |
1985-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |