http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SI-3102562-T1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-00 |
| filingDate | 2015-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a17947e0534bc7c2ead4c3f9d968381b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_657ba139daa671134055960d859e3d9b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac016a3b519cc6346496329a32acf8ad |
| publicationDate | 2018-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SI-3102562-T1 |
| titleOfInvention | Method for purification of adipodinitrile (ADN) |
| abstract | The present invention relates to a process for purifying adiponitrile (ADN), wherein crude ADN is introduced into a rectification apparatus (R1). The rectification apparatus (R1) comprises a first side draw and preferably also a second side draw, the first side draw being disposed below the crude ADN introduction point and the optional second side draw being disposed above the crude ADN introduction point. The first side draw is used to draw off a gaseous stream comprising ADN while the optional second side draw is used to draw off undesired by-products such as 1-amino-2-cyanocyclopentene (ACCP) which are often generated in ADN production and consequently may be present in the crude ADN. The gaseous stream from the first side draw of (R1) is introduced into a second rectification apparatus (R2). (R2) is used to separate off ADN from remaining high boilers and any other by-products present, pure ADN being drawn off from (D2) as overhead product. It is preferable when the process according to the invention employs crude ADN from a reaction of butadiene with hydrocyanic acid (HCN). |
| priorityDate | 2014-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.