| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F226-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F26-10 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F226-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F26-10 |
| filingDate |
2001-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_588e021cc1920f2e2895a160b3748165
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e0c02dde470c6c7d8d72a426ec72edf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e396dc4c5c0a5c2e07cc4cd5e9d0e804
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3cc3afe99ea3f9619d7ccf34d45a209
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79a98a2e1461f273a328bf2469387906
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80950dcf17781ac07ec35828e19ee348 |
| publicationDate |
2001-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2001020078-A1 |
| titleOfInvention |
Production process for vinylpyrrolidone polymer |
| abstract |
The present invention provides a production process for a vinylpyrrolidone polymer which process prevents the polymerization reaction of N-vinylpyrrolidone from being hindered by by-products (as formed by nucleomethylation of N-vinylpyrrolidone) or γ-butyrolactone, and therefore enables to obtain a vinylpyrrolidone polymer that has a desired molecular weight and involves only a small amount of residual monomers, wherein the vinylpyrrolidone polymer can display excellent properties even if the vinylpyrrolidone polymer is, for example, crosslinked to convert it into a water-absorbent resin. The production process for a vinylpyrrolidone polymer comprises the step of polymerizing a polymerizable monomer component or components which include N-vinylpyrrolidone, wherein: the N-vinylpyrrolidone as used is N-vinylpyrrolidone having a γ-butyrolactone content of not more than 500 ppm; and/or the N-vinylpyrrolidone as used is N-vinylpyrrolidone obtained without using acetylene as a raw material. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2835365-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006201664-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8268189-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11173472-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11786763-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106749908-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112830987-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008207841-A1 |
| priorityDate |
2000-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |