http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2021206747-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78ca80ad4b743c901ec136b21263f093 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D403-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1046 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D403-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 2016-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9101f2b744efb5b8ca4d14a22a7daab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7747b40d0abbda2fb11143f8a943584d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33a6a3b2dc37948383b7f857199c38e6 |
| publicationDate | 2021-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2021206747-A1 |
| titleOfInvention | Methods for the manufacture of an aromatic bisimide and a polyetherimide |
| abstract | A method for producing an aromatic bisimide includes reacting a dialkali metal salt of a dihydroxy aromatic compound with an N-alkyl nitrophthalimide to form a product mixture including the aromatic bisimide. The N-alkyl nitrophthalimide includes 4-nitro-N—(C 1-13 alkyl)phthalimide, 3-nitro-N—(C 1-13 alkyl)phthalimide, or a combination including at least one of the foregoing, and 4-hydroxy-3,5-dinitro-N—(C 1-13 alkyl)phthalimide in an amount of 1-10000 ppm. The aromatic bisimide can be obtained in a yield of greater than 75%, or 90-99.8%. A method for the manufacture of a polyetherimide, a polyetherimide, and an article including the polyetherimide are also disclosed. A mixed acid nitration process for the preparation of an N-alkyl nitrophthalimide is also described. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114213651-A |
| priorityDate | 2015-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 471.