| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F14-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-004 |
| 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/C08F14-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate |
1988-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0edc5d1e8dab7487a647e8bbf9920ba2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_095ac6bf42b471eb11ad6df20c0c27c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d8504f0fe4639dfc3361c4e89e159f5 |
| publicationDate |
1989-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4845174-A |
| titleOfInvention |
Process for preparing a vinyl chloride polymer |
| abstract |
A process for preparing a vinyl chloride polymer by suspension polymerization with use of (A) a particular partially saponified polyvinyl alcohol having a high polymerization degree and a high saponification degree, (B) a particular hydoxypropyl methyl cellulose and (C) a particular partially saponified polyvinyl alcohol having a low polymerization degree and a low saponification degree as dispersion stabilizers, in a polymerization vessel coated with a scale preventive on its inner wall etc., wherein an (A)Agent/(B)agent ratio is 4/6 to 24/1 in weight ratio; Agent (C) is used in an amount of 0.001 to 0.1% by weight based on the charged monomers; Agent (C) is charged with or after the charging of Agent (A) and (B), and, the particle diameter of Agent (C) in the suspension mixture is controlled to not higher than 100 mu m. A vinyl chloride polymer having a high bulk density and high porosity can be produced without formation of polymer scale. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5204421-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0633273-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6316563-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0475186-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9106576-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6924369-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5298578-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5235012-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5243000-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5360857-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5194536-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7001960-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005197476-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5096988-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015191558-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9777080-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5286796-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5294684-A |
| priorityDate |
1987-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |