http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2005063824-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F14-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 |
| filingDate | 2004-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-WO2005063824-A1 |
| titleOfInvention | Method for producing vinyl chloride polymer |
| abstract | A method for producing a vinyl chloride polymer comprising suspension polymerization of a vinyl chloride monomer or a mixture of a vinyl chloride monomer and a monomer copolymerizable therewith in a polymerization vessel equipped with a reflux condenser (A) Highly active oil-soluble polymerization having a 10-hour half-life temperature of 40 ° C. or less at a concentration of 0.1 mol / L in benzene for a certain period of time from the start of heat removal by the reflux condenser to the end of polymerization. Adding an initiator to the reaction mixture; (B) at least during the period from the start of addition of the highly active oil-soluble polymerization initiator to the end of the addition, There is provided a method for producing a vinyl chloride polymer comprising intermittently adding to the reaction mixture, and (C) passing steam through the charging pipe after completion of addition of water. According to the present invention, a method for producing a vinyl chloride polymer by aqueous suspension polymerization in a polymerization vessel equipped with a reflux condenser can be improved, and the polymerization time can be reduced by efficiently utilizing the heat removal capability. A vinyl chloride polymer that can be shortened and has good quality with very few fish eyes can be produced. |
| priorityDate | 2003-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 100.