http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-906759-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0235f5aeeff44e5b1733138b721f5c06 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-903 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F136-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F136-08 |
| filingDate | 1961-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-906759-A |
| titleOfInvention | Polymerization method and product |
| abstract | Polyisoprene which has a substantially completely trans-1,4-configuration is made by polymerizing isoprene in the presence of a catalyst comprising (1) vanadium trichloride (2) an organoaluminium compound of the formula AlR3 where R is a hydrocarbon radical, and (3) a compound of the formula TiX4 or R1TiX3 where X is Cl, Br, I, or OR11, and R1 and R11 are hydrocarbon radicals, and in which the molar ratio of the aluminium compound to vanadium trichloride ranges from 2:1 to 200:1, and the molar ratio of the aluminium compound to the titanium compound ranges from 2:1 to 80:1. The vanadium trichloride is preferably dispersed on the surface of a finely divided inert solid carrier such as clay, silica, alumina, magnesia, or titania. The R radical in component (2) may be methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, hexyl, dodecyl, cyclopentyl, cyclohexyl, phenyl, tolyl or phenylethyl. Component (3) of the catalyst is preferably tetra(2-ethylbutyl)titanate. The polymerization is generally effected in the presence of a hydrocarbon solvent, and the polymer recovered by conventional techniques. Specification 877,371 is referred to. |
| priorityDate | 1960-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.