http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002053601-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a846e3037b992655a40d7adfeb82032 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-06 |
| filingDate | 2000-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c34c5ace1e3a54cbfe79d13597d4fae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b14116a4da8d34d709b0702f7800f9a |
| publicationDate | 2002-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2002053601-A |
| titleOfInvention | Method for producing vinyl chloride polymer |
| abstract | (57) [Summary] [PROBLEMS] The present invention reduces the generation of fish eyes, In addition, the present invention provides a production method capable of obtaining a vinyl chloride-based polymer with little scale adhesion and little coarse particles during polymerization. SOLUTION: When a vinyl monomer mainly composed of a vinyl chloride monomer is subjected to suspension polymerization in an aqueous medium containing a dispersant using a polymerization vessel equipped with a reflux condenser, A polyethylene oxide having a viscosity average molecular weight of 2,000,000 to 8,000,000 is added in an amount of 0.0 The polymerization start temperature (T 1 ) is 45 to 60 ° C. and the polymerization end temperature (T 2 ) is 50 to 7 parts by weight. A vinyl chloride-based polymer, wherein the polymerization is performed while continuously or intermittently increasing the polymerization temperature so that the temperature is 5 ° C. and the temperature difference between T 1 and T 2 is 3 to 15 ° C. Production method. |
| priorityDate | 2000-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.