http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114874168-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9d933cc5372179660c9df3e5d39c6f98 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-89 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 |
| filingDate | 2022-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cce357b7567bbe972f47cf4c2f07bf4a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c77b78382678980280620e62b7cfe8fd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30440fc67cf0536ee08440e7baa2b713 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdefc9a1141df5c3596415eaaa14f992 |
| publicationDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114874168-A |
| titleOfInvention | A kind of 4,4'-(hexafluoroisopropenyl) diphthalic anhydride and preparation method thereof |
| abstract | In order to solve the problem of many impurities and high cost in the synthesis of 4,4'-(hexafluoroisopropenyl) diphthalic anhydride in the prior art, the present application provides a 4,4'-(hexafluoroisopropenyl) diphthalic anhydride and The preparation method includes using naphthalene and hexafluoroacetone as reaction raw materials in a nitro-substituted benzene solvent to generate 2,2-bis(2-naphthyl) hexafluoropropane, and then oxidatively dehydrated with oxygen to generate 4,4'-(hexafluoropropane) isopropenyl) diphthalic anhydride; the application uses naphthalene as a reaction raw material, the cost of raw materials is low, and naphthalene and hexafluoroacetone are used as raw materials to synthesize 4,4'-(hexafluoroisopropenyl) diphthalic anhydride in two steps, and the process route is short, The production cost is low, the synthetic product has few impurities, the product is easy to be purified, and the purification cost is low. |
| priorityDate | 2022-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 89.