http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021132364-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d5d04736b0b882a4f5a1e0e0e4cd8cbb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C233-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F26-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-267 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24 |
| filingDate | 2020-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f152efc9bb4e41e84406e54de7fcd2d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fddf892901bacbd19de0d68c42e4a09 |
| publicationDate | 2021-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2021132364-A1 |
| titleOfInvention | Method for producing highly polymerizable n-vinylcarboxamide monomer |
| abstract | Provided is a method with which it is possible to purify N-vinylcarboxamide efficiently and produce a highly polymerizable N-vinylcarboxamide monomer.　This method for producing a highly polymerizable N-vinylcarboxamide monomer is characterized in that: the method includes (A) a step for melting by heating a crude N-vinylcarboxamide monomer containing 50-88 mass% of N-vinylcarboxamide monomer, subsequently precipitating N-vinylcarboxamide monomer crystals through cooling (cooling precipitation), and subjecting the precipitated N-vinylcarboxamide monomer crystals to solid-liquid separation (step (A)), and (B) a step for furthermore dissolving the N-vinylcarboxamide monomer crystals separated in step (A) in a mixed solvent of acetonitrile and a C6-7 aliphatic hydrocarbon, conducting crystallization (solvent crystallization), and performing solid-liquid separation to recover an N-vinylcarboxamide monomer purified product (step (B)); the mass ratio of acetonitrile/N-vinylcarboxamide monomer crystals in step (B) is 0.01-0.5 (inclusive); and the mass ratio of C6-7 aliphatic hydrocarbon/N-vinylcarboxamide monomer crystals in step (B) is 0.5-3.0 (inclusive). |
| priorityDate | 2019-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 131.