http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015174848-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16 |
| filingDate | 2014-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdb036a530293886455b09b10e2dce3c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1db4ea7b73cd3e39ce131c09be361050 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e613a7b83d685aa9272f930e041f0a7b |
| publicationDate | 2015-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2015174848-A |
| titleOfInvention | Method for purifying lactams |
| abstract | An object of the present invention is to efficiently reduce microgels in anhydrous lactams produced by anomalous storage of hydrous lactams and insufficient management of dehydration distillation operating conditions in the production process of anhydrous lactams, Provided is a method for purifying lactams that can be used as a raw material for production of functional fibers and the like. In a process for producing lactams having a water concentration of 0.1% by weight or less and a carbon number of 3-6, the number of microgels having a particle size of 1 μm to 30 μm present in the lactam is 70. A method for purifying lactams, comprising maintaining lactams at a rate of 70 mg / mg or more in an atmosphere having a temperature of 70 to 100 ° C. and an oxygen concentration of 5% by volume or less for 24 hours or more. [Selection figure] None |
| priorityDate | 2014-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.