| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C225-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C50-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-47 |
| filingDate |
1976-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1976-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf594dbdadf27a5e8168795f172da0d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cbdc66555c921fb21396b6d79cf05b7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14cd274811148867692c3a9115ef3cee
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f373fa07c84eee8cda1bf2d66af7d709 |
| publicationDate |
1976-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3996252-A |
| titleOfInvention |
Preparation of pure 1,8-dinitroanthraquinone |
| abstract |
A mixture of dinitroanthraquinones of which at least 70% is 1,8-dinitroanthraquinone is dissolved at elevated temperature in a halogenated aromatic hydrocarbon, a carboxylic acid nitrile or a cyclic sulphone and is thereafter cooled selectively to precipitate substantially pure 1,8-dinitroanthraquinone. Preferred solvents are 1-chloronaphthalene, sulpholane and adipic acid dinitrile. The particular temperature of dissolution and cooling will depend upon the particular solvent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4155921-A |
| priorityDate |
1975-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |