| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1df32e16376d0a13afca3ae698a5de92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c12b6e54811e05e6377ca16b74840d56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_89a84ca2c48570148c32b022242e632e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_72096850538ea18031946df9e797a15c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-16 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-26 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-267 |
| filingDate |
2001-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e13d20fe93f42dd941b93b77824809d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e45735447d7a812f215607b5b8a11e2d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00ee751d4fa8021f01b097e2bb3999e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_418178f9358cf73fe18b1beaf455e4b5 |
| publicationDate |
2001-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0190066-A2 |
| titleOfInvention |
Method for obtaining pure n-vinyl pyrrolidone |
| abstract |
The invention relates to a method for obtaining pure N-vinyl pyrrolidone from raw materials containing N-vinyl pyrrolidone, said method comprising a single or multiple-stage crystallisation method. The method is characterised in that the mother liquor of the first crystallisation stage is either purified by distillation and/or extraction or is returned to a product stream of the production process, said stream containing an N-vinyl pyrrolidone. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010060801-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9878979-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3173402-A1 |
| priorityDate |
2000-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |