http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-892160-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b94baf1aad802afc19b0e63b4499b04d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04 |
| filingDate | 1959-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-892160-A |
| titleOfInvention | Improvements in and relating to polymerisation |
| abstract | Synthetic rubber is prepared by polymerizing at low temperature an aqueous emulsion of synthetic rubber forming monomers containing 1 to 10 parts of an emulsifying agent in the presence of an organic peroxide catalyst and an activator system which comprises a complex iron salt or a simple iron salt and a complexing agent therefor and a mixture consisting of 15 to 70 molal per cent of sodium benzaldehyde sulphoxylate and 85 to 30 molal per cent of sodium formaldehyde sulphoxylate, this mixture being present in from 0,02 to 2 parts per 100 of monomers and the concentration of the iron in the reaction mixture being less than 0,008 parts per 100 of monomer. Specified synthetic rubber forming monomers are butadiene, isoprene, piperylene, 2,3-dimethyl butadiene, chlorobutadiene, and their mixtures with each other or with acrylonitrile, methyl acrylate or methacrylate, styrene, vinyl naphthalene, parachlorostyrene, vinylidene chloride and vinyl pyridine. The complex iron salt may be disodium ferrous or monosodium ferric ethylenediamine tetraacetate and the simple salt and complexing agent ferric chloride and tetrasodium ethylenediamine tetraacetate. Specified organic peroxides are paramethane, cumene, and diisopropylbenzene hydroperoxide while the emulsifying agent may be a fatty acid soap or a rosin acid soap or a 50/50 fatty acid/disproportionated rosin acid soap mixture. A polymerization regulator, e.g. an aliphatic mercaptan of 6 to 18 carbon atoms, may also be present. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2159525-A |
| priorityDate | 1958-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.