http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0287428-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_682f5a24344011e5caf4eb35e036355b |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2982 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F14-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-20 |
| filingDate | 1988-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd12482a751c794d26c3b74702ea416c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cbc0daeb7c641ade0ae0239f96a25ec6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af940172a92e906a55e98f978b290a1f |
| publicationDate | 1988-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0287428-A1 |
| titleOfInvention | Method for the preparation of vinyl chloride polymers in an aqueous emulsion in the shape of a latex of monodisperse particles |
| abstract | Process for the preparation of homo- and co-polymers of vinyl chloride in the form of a latex with monodispersed particles, and more particularly of a latex with large particles, by polymerization in aqueous emulsion of the corresponding monomer (s), in one or two step.n n n The first step is carried out in the absence of surfactant and in the presence of at least 0.2% and preferably from 0.3 to 1%, by weight relative to the monomer (s), of at least one water-soluble initiator selected from the group formed by alkali metal persulfates and ammonium persulfate. The first step is carried out in the presence also of at least one water-soluble auxiliary compound, solvent for vinyl chloride, in an amount such that the solubility at 25 ° C., under atmospheric pressure, of vinyl chloride in the aqueous phase is at least equal to 1.5 g / l.n n n The process makes it possible to obtain, in a polymerization step, polymers of vinyl chloride in the form of latex with monodispersed particles with an average diameter of between 0.17 and 0.8 μm and, in two polymerization steps, polymers of vinyl chloride in the form of latex with monodispersed particles with an average diameter of between 0.5 and 1.2 μm. Said latexes, whether originating from the first or from the second stage, are free from non-spherical particles. |
| priorityDate | 1987-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.