http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109180501-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_52f7db66dbffeac2ee9cbf21f6f71b47 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C217-90 |
| filingDate | 2018-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0787f9ce9cec73d2ad52f5c321725836 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64525ee786a32cf1fbec14a739140ec1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27f7220df05ec3b2b83e617ce3675bf8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fc1840b25bcc492defe5c2feb5158dc |
| publicationDate | 2019-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109180501-A |
| titleOfInvention | A kind of synthetic method of 4,4'-diaminodiphenyl ether |
| abstract | The invention discloses a method for synthesizing 4,4'-diaminodiphenyl ether, which comprises the following steps: the first step, nitrosation reaction: adding sodium nitrite and diphenyl ether into an aqueous phase, and in the range of 0-5 DEG C Inside, slowly add hydrochloric acid dropwise until the reaction ends, separate out crystals, filter, and vacuum dry to obtain 4,4'-dinitroso diphenyl ether. The reaction process is as follows: the second step, reduction reaction: the obtained solid is added to the high pressure In the kettle, use alcohol as a solvent, add a catalyst, pressurize hydrogen to 0.5-4MPa, heat and stir to 70-120°C, and keep the temperature for 2-6h to prepare 4,4'-diaminodiphenyl ether, which is disclosed in the present invention. The synthesis method can reduce the production cost, reduce the environmental pollution, improve the safety factor, and reduce the discharge of the three wastes. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113145121-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112939797-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113145121-B |
| priorityDate | 2018-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.