http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2218316-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C46-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-18 |
| filingDate | 1972-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5669b4d920c1596d7d2e73254f94379c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71107cfc2b95d0ec358669b722904331 |
| publicationDate | 1973-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2218316-A1 |
| titleOfInvention | PROCESS FOR PRODUCING ANTHRAQUINONE |
| abstract | Anthraquinone prepn. by gas-phase naphthalene oxidn. to naphthoquinone and phthalic anhydride and reaction of oxidn. prod. with butadiene, is effected by carrying out reaction with butadiene at raised temp. in the presence of naphthalene, pref. in liquid phase in the presence of 20-90 wt % naphthalene at 80-250 degrees C; separating naphthalene, pref. by distn., from reaction mixt. contg. naphthalene, tetrahydroanthraquinone and phthalic anhydride; treating residual mixt of tetrahydroanthraquinone and phthalic anhydride with molecular O2, esp. air, in the presence of pref. 50-90 wt % phthalic anhydride, in liquid phase, at 150-300 (180-250) degrees C; and separating phthalic anhydride by distn. from reaction mixt. obtd. consisting of anthraquinone and phthalic anhydride. Tetrahydroanthraquinone conversion to anthrquinone pref. takes place in a bubble column. |
| priorityDate | 1972-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.