http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-802648-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af7c9c966acd2ef7eca105d82d8d0991 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-911 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04 |
| filingDate | 1956-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1958-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-802648-A |
| titleOfInvention | Improvements in emulsion polymerization of unsaturated hydrocarbons |
| abstract | A process for the emulsion polymerization of organic monomeric material containing an active CH2=C< group comprises contacting the material under polymerizing conditions and in aqueous medium with a catalyst system including an oxidized sodium, potassium or ammonium alkylbenzene sulphonate. Polymeric material may be obtained by polymerizing butadiene, 2,3-dimethylbutadiene, isoprene, piperylene, 3-furyl butadiene, 3-methoxy butadiene, chloroprene, bromoprene or methylchloroprene; styrene, alkyl styrenes, p-chlorostyrene, p-methoxystyrene, alpha-methylstyrene, or vinylnaphthalene; acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, methyl alphachloro-acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methyl ethacrylate, acrylonitrile, methacrylonitrile or methacrylamide; methyl isopropenyl ketone, methyl vinyl ketone, methyl vinyl ether, vinylethinyl alkyl carbinols, vinyl acetate, vinyl chloride, vinylidene chloride, vinylfurane, vinyl carbazole, or vinylacetylene; either alone or in mixtures of 2 or more of such compounds. Preferred products are obtained by polymerizing aliphatic conjugated dienes either alone, or with aryl olefins, acrylic or substituted acrylic acids esters, nitriles, and amides, or methyl isopropenyl ketone or vinyl chloride; more especially copolymers of butadiene with styrene. Oxidation of the alkyl benzene sulphonates may be effected in the solid form or in aqueous solution by passing an oxygen-containing gas in at a temperature of 60-100 DEG C. Preferred sulphonates are sodium tert.-dodecylbenzene sulphonate, sodium decyltoluene sulphonate, potassium octylxylene sulphonate, ammonium octylbenzene sulphonate, ammonium eicosylbenzene sulphonate, potassium 2-ethyl-4-dodecylbenzene sulphonate and sodium tert.-octylnaphthalene sulphonate. The oxidized sulphonates are preferably used in iron pyrophosphate, hydroperoxide, peroxamine and sulphoxylate systems. Mercaptans may also be present in the polymerizable mix and the polymerization may be terminated before complete conversion. The polymerization is preferably effected at a pH of 9.0 to 11.8. Emulsifiers such as potassium laurate, stearate or oleate or rosin soaps may also be present.ALSO:A process for the emulsion polymerization of organic monomeric material containing an active CH2=C group comprises contacting the material under polymerizing conditions and in aqueous medium with a catalyst system including an oxidized sodium, potassium or ammonium alkylbenzene sulphonate, (see Group IV (a)). Oxidation of the alkyl benzene sulphonates may be effected in the solid form or in aqueous solution by passing an oxygen-containing gas in at a temperature of 60-100 DEG C. Preferred sulphonates are sodium tert. dodecylbenzene sulphonate, sodium decyltoluene sulphonate, potassium octylxylene sulphonate, ammonium octylbenzene sulphonate, ammonium epicosylbenzene sulphonate, potassium 2-ethyl-4-dodecylbenzene sulphonate and sodium tert.-octylnaphthalene sulphonate. |
| priorityDate | 1955-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 120.