http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2039765-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F14-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 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 | 1991-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_095ac6bf42b471eb11ad6df20c0c27c0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a1903dbd9dc5f6c9c884f740f6e5050 |
| publicationDate | 1991-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2039765-A1 |
| titleOfInvention | Preparation of vinyl chloride polymers |
| abstract | ABSTRACT OF THE DISCLOSURE Preparation of vinyl chloride polymers A process for preparation of a vinyl chloride polymer comprising the steps of subjecting an aqueous me-dium containing vinyl chloride monomer or a mixture of vinyl chloride monomer with other vinyl monomer, a polymerization initiator and a dispersant to high-speed shear agitation at a shear rate of 104 sec-1 or above to prepare a suspended dispersion containing fine particles of the monomer(s) dispersed therein, then subjecting the suspended dispersion to low-speed shear agitation at a shear rate of from 10 to 100 sec-1, and thereafter start-ing suspension polymerization. Even with a decreased amount of dispersant, the process inhibits the coarsening of the polymer particles, to yield the polymer with a nar-row particle diameter distribution. Deposition of scale and formation of fish-eyes are also prevented effectively. |
| priorityDate | 1990-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.