| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ac595689f28ec52f2187df04f54c4ce |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F14-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-06 |
| filingDate |
1974-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1976-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07754b47c8c6a856860d83c9d126b4cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c2d3837110066eae4b2359c9ece4c35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_faf61d11f64f9e5c42c9ee838c59011b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dcd4bee021f70e55b99015626b35a033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6e76c4c91adc90d5c34e4f3dd9060e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c587948f2885036be842749709c3080 |
| publicationDate |
1976-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3933771-A |
| titleOfInvention |
Composition of and method of obtaining small particle size polymers and copolymers of vinyl chloride having a fused surface |
| abstract |
Polyvinyl chloride and polyvinyl chloride containing up to 20 percent of a comonomer can be obtained in the form of small particle size spherical glassy surface particles by a process of bulk polymerization of monomer or monomers comprising two stage polymerization wherein high shear agitation is used during the first stage and low shear agitation is used in the second stage. To obtain a reduction in particle size, the polymerization in the first stage is conducted in contact with at least one of (A) an additive comprising an organic or inorganic, inert, fine particle size material solid at least at reaction temperatures, and insoluble in said monomer or monomers used, and (B) a cationic, anionic, or non-ionic surface active agent. A portion of the polymerization in a second stage reaction is conducted at temperature and pressure sufficient to render the surface of the individual particles or agglomerates glassy and fused. The resulting polymers and copolymers produced have superior plastisol viscosity stability and fusion characteristics and excellent powder flow properties as compared to those of the prior art. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6552762-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6556262-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4501870-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010137618-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4071670-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6423368-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4963634-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4155899-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4145499-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4965087-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5378786-A |
| priorityDate |
1973-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |