http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0443856-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c5d35cbcd18261ca6afc76a9f64ae2a1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-331 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 |
| filingDate | 1991-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79df6481a43683dc724e6a0452219133 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_279e1b7b227b118f44d386ef2b8b7039 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fbbd8555b427a206038d9964b522110 |
| publicationDate | 1991-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0443856-A1 |
| titleOfInvention | Preparation of isopropylidene bis(phthalic acid) and isopropylidene bis (phthalic anhydride) |
| abstract | An oxidation process is provided for converting dixylylpropane to isopropylidene bis(phthalic acid) in good yields with minimal by-product production, especially trimellitic acid production. The oxidation process employs an oxidation catalyst that includes zirconium as well as cobalt, manganese, and bromine. Additionally, high purity isopropylidene bis(phthalic anhydride) is produced from crude aqueous isopropylidene bis(phthalic acid) solution by dehydration of the acid moiety in the presence of an aromatic hydrocarbon solvent for isopropylidene bis(phthalic anhydride) that forms a minimum boiling azeotrope with water. Water formed as a result of the dehydration is removed by azeotropic distillation during dehydration. |
| priorityDate | 1990-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 90.