http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5416256-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9db45cbaec0651cacea17f30f366beee |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-255 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-255 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-03 |
| filingDate | 1994-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5e9e12a68e2039e66284aae277424c7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4899a220a50749f3e213ded8d2b0e3b1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8bc6115d996265f9ab8d5916d597f5a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2344933f6777f74bacfb08385406263 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee977147321cbb3ea2efffb9978061ce |
| publicationDate | 1995-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5416256-A |
| titleOfInvention | Process for manufacturing 5-hydroxyisophthalic acid |
| abstract | An improved process for manufacturing 5-hydroxyisophthalic acid by means of oxidizing 5-acyloxy-m-xylene or its oxidation intermediate with molecular oxygen in a solvent consisting of lower aliphatic carboxylic acid and acetic anhydride in the presence of catalyst consisting of heavy metal comprising cobalt as the main component, and a bromine compound, and hydrolyzing the product thereby obtained. The improvement is characterized in that the oxidation is carried out under a pressure of 2-15/cm2 gauge in the presence of an alkali metal compound corresponding to 0.1-1.1 gram atom in terms of alkali metal atom based upon 1 gram atom of the heavy metal used for the catalyst. The present invention produces a high-quality 5-hydroxyisophthalic acid having excellent color from 5-acyloxy-m-xylene. |
| priorityDate | 1993-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 96.