http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5559134-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e43b4ca6b41ce9f54c9a895d474c81a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-92 |
| filingDate | 1978-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f2aac163a5210e7c8c51c848bcbbde2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fbf3e692f4903ffb58a4bf50133dac1f |
| publicationDate | 1980-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5559134-A |
| titleOfInvention | Improved method of making naphthalic acid or its anhydride |
| abstract | PURPOSE: An acenaphthene is oxidized by a two-step process in which the second oxidation is conducted in a mixture of an aqueous alkali and an organic solvent to produce said naphthalic acid or its anhydride useful as intermediate of dyes and pigments in high yield and purity. n CONSTITUTION: Acenaphthene or an acenaphthene derivative sustituted with proups other than hydroxyl and amino groups is oxidized with a molecular oxygen- containing gas or nitric acid and the resulting product is further oxidized with a hypohalous salt or a molecular oxygen-containing gas, wherein the second step oxidation is conducted in a mixture of sufficient amount of an aqueous alkali to dissolve the stoichiometric amount of naphthalic acid and 0.1W800, preferably 1W 80vol% of an organic solvent to improve greatly the efficiency of the second step oxidation, thus giving high-purity naphthalic acid or its anhydride in high yield for a short reaction time. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1978-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.