http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1111032-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-47 |
| filingDate | 1977-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f64c1ba2a143104bdfcc95d518b34e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3555c9f832676002c813ac52da38a083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4f5b634f975df6598bdbb47e804687b |
| publicationDate | 1981-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1111032-A |
| titleOfInvention | Process for the separation of dinitroanthraquinone mixtures |
| abstract | ABSTRACT OF THE DISCLOSURE A process has been developed for the separation isomers of 1,5-dinitroanthraquinone (particularly 1,8-dinitroanthraquinone) from 1,5-dinitroanthraquinone which comprises a) treating 1 part by weight of a dinitroanthraquinone mixture with 4.5-9 parts by weight of nitrobenzene and/or with the solution obtained after the separation of 1,5-dinitroanthraquinone according to step b) and/ or the solution obtained after the separation of the 1,X- (X = 5, 6, 7 and 8)-dinitroanthraquinone mixture at a temperature of 100 to 200°C and then separating off the unsoluble constituents at 100 - 150°C, b) treating the residue which is obtained according to step a) and essentially consists of 1,5-dinitroanthraquinone, with 1-4 parts by weight of nitrobenzene at a temperature from 140°C to the boiling point, then cooling the mixture to 90 to 130°C and separating the 1,5-dinitroanthra-quinone which is not dissolved, c) cooling the solution obtained after the separation of the unsoluble constituents according to step a) to 90 to 120°C and separating off the 1,8-dinitroanthraquinone which has crystallised out. |
| priorityDate | 1976-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.