http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102234219-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_257e6a5552cab09022052d9a2f168cf0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C25-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-35 |
| filingDate | 2010-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_592516799790a5030c056177309421cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_969f2d2d6f3e3fe674bb12fb640d8e0b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_205699e1170c80c55cebb0e55acaff29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce8a53cdc74fde3f3bb9d1b76bd07772 |
| publicationDate | 2013-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102234219-B |
| titleOfInvention | 2,6-dichlorotoluene preparation method |
| abstract | The invention discloses a 2,6-dichlorotoluene preparation method which comprises the following steps: mixing and stirring 3-chloro-2-toluidine and acid, cooling the above mixture to a temperature of -10-15 DEG C, adding nitrite, wherein a speed of adding the nitrite is controlled that the temperature of the mixture is not higher than 15 DEG C, followed by stirring, and carrying out a thermal decomposition reaction, wherein the temperature of the mixture is controlled at 15-60 DEG C; after finish of the thermal decomposition reaction, separating lower organic phase, and recycling unreacted acid with a graphite absorbing tower; washing the organic phase with water to a neutral state, carrying out distillation, in a temperature of 180-196 DEG C removing o-chlorotoluene generated in the reaction, carrying out rectification and collecting distillate of 196-200.5 DEG C to obtain the 2,6-dichlorotoluene. The 2,6-dichlorotoluene preparation method in the invention has the advantages of high product yield and low production cost. |
| priorityDate | 2010-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.