| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ecc58e5fd0006c472fea1ec2f879638c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f9af914ed2fb00cd4f1b8b1a28964e4 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F26-10 |
| filingDate |
2001-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49def30d5c271335b6503642852d206c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e81b7f327807c4b0f36e0193013022c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84f42269e8a67c68639dadbee5ce3ae1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37867965c03b34d2afb49add75467063 |
| publicationDate |
2003-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2003040911-A |
| titleOfInvention |
Method for producing vinylpyrrolidone polymer |
| abstract |
(57) Abstract: A method for producing a vinylpyrrolidone polymer having a high K value (for example, a K value of 80 or more) in a short time, And a vinylpyrrolidone polymer having a high K value obtained by the method. SOLUTION: In a method for producing a vinylpyrrolidone polymer by polymerizing vinylpyrrolidone in a vinylpyrrolidone aqueous solution using a radical polymerization initiator in a polymerization reactor, the radical polymerization initiator is reduced to a half temperature of 70 ° C. Period 1 An oil-soluble radical polymerization initiator having a half-life of from 95 to 2000 minutes and a temperature of 95 ° C. of from 5 to 50 minutes; The polymerization is started at ~ 80 ° C, the temperature is raised to 85 ~ 100 ° C by utilizing the heat of reaction, and then the temperature range is maintained until the end of the polymerization to carry out the polymerization. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112830987-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016188268-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007092029-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1757665-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005306906-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007231135-A |
| priorityDate |
2001-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |