http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109704979-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C225-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C221-00 |
| filingDate | 2019-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109704979-B |
| titleOfInvention | Method for efficiently preparing 4, 4-diamino-1, 1-dianthraquinone by using Bronsted acid functionalized ionic liquid |
| abstract | The invention discloses a method for efficiently preparing 4, 4-diamino-1, 1-dianthraquinone by using a Bronsted acid functionalized ionic liquid, weighing the Bronsted acid functionalized ionic liquid, adding the Bronsted acid functionalized ionic liquid into a reaction container, and heating to a certain temperature; slowly adding 4, 4-diamino-1, 1-bisanthraquinone-3, 3-sodium disulfonate, heating, stirring and reacting for a certain time, and cooling to a certain temperature after the reaction is finished; dropwise adding a certain amount of organic solvent, uniformly stirring, carrying out suction filtration, and washing with the solvent until the solution is colorless; and (4) drying the filter cake in vacuum to obtain the 4, 4-diamino-1, 1-dianthraquinone. According to the method, the Bronsted acid functionalized ionic liquid is used for replacing concentrated sulfuric acid as a reaction medium for producing the 4, 4-diamino-1, 1-dianthraquinone, waste acid is not discharged, the yield of the 4, 4-diamino-1, 1-dianthraquinone is up to more than 98%, the method accords with the large direction of green cycle development, and has a wide application prospect. |
| priorityDate | 2019-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 15.