http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-985594-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47becd0bad1e8c65826be1edac09d306 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 |
| filingDate | 1963-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-985594-A |
| titleOfInvention | Process for the preparation of olefinic copolymers |
| abstract | Linear amorphous copolymers of propylene or butene-1 and ethylene are made by effecting the polymerization of the monomeric mix in the liquid phase at a temperature of 0 DEG to - 80 DEG C., in the presence of a catalyst obtained by contacting an addition complex of a vanadium halide with a "Lewis base" with a dialkyl aluminium halide, by maintaining in the liquid phase a molar ratio between propylene:ethylene of at least 4:1, or of butene: ethylene of at least 25:1. The polymerization may be carried out in bulk or in the presence of a halogenated or non-halogenated hydrocarbon diluent. The term "Lewis base" means aliphatic ethers, cyclic ethers, tert-amines, or heterocyclic nitrogen bases, e.g. diethyl or dipropyl ether, diethoxyethane, tetrahydrofuran, dioxan, trimethylamine, methyl-diethylamine, pyridine, or quinoline. The vanadium halide may be vanadium tetra-, or trichloride, or vanadyl trichloride. The catalyst may be preformed, but is preferably formed in the presence of the monomers. The process may be effected continuously and the product recovered by known methods. |
| priorityDate | 1960-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.