http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-925092-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03fe2448dfa9f7b070aa92557de966e3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-324 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-847 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2531-22 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-465 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-1895 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-185 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2404 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-20 |
| filingDate | 1960-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-925092-A |
| titleOfInvention | Improvements in or relating to cycloolefines |
| abstract | Cyclo-olefins containing at least eight carbon atoms and at least two double bonds in the ring, e.g. 1, 5-cyclo octadiene, are prepared by polymerizing open chain conjugated dienes in the presence of a compound of the formula (R3Sb)x Ni(CO)4-x where R is an organic radical such as alkyl, aryl or heterocyclic and x is from 1 to 3. Specified dienes are butadiene, isoprene, piperylene, phenyldiolefines, 2,3-dimethylbutadiene, and 2,4-hexadiene. Temperatures of 9-250 DEG C and pressures of 0-1000 p.s.i.g. are used. The concentration of catalyst may be 0,5-10%; bistriphenylstibine nickel dicarbonyl is preferred. Other catalysts may also be present e.g. triphenylphosphite-triphenylphosphine-, triphenylantimonite-, triphenylarsenite-, methylphosphite- and beta-chloroethyl phosphitenickel carbonyls. Preferably 0,01-4% by weight of the diene of a polymerization inhibitor is added such as a phenol, amine, aromatic polynitro compound or terpene. Solvents may also be present e.g. benzene, petroleum ether, naphtha, tetrahydrofuran, toluene, p-cymene, 1,5-cyclo-octadiene, or dicyclopentadiene. The reaction time may be ten minutes to 24 hours or in continuous operations the space rate may be 0,2-4 volumes of diene per reactor volume per hour.ALSO:Halogenated cyclo-olefins containing at least eight carbon atoms and at least two double bonds in the ring, e.g. halogenated 1,5-cyclo octadienes are prepared by polymerizing open chain halogenated conjugated dienes in the presence of a compound of the formula (R3Sb)xNi(CO)x-4 where R is an organic radical such as alkyl, aryl or heterocyclic and x is from 1 to 3. Specified dienes are chloroprene, 2,3-dichlorobutadiene, and chlorfluorobutadienes. Temperatures of 9-250 DEG C. and pressures of 0-1000 p.s.i.g. are used. The concentration of catalyst may be 0.5-10%; bistriphenylstibine nickel dicarbonyl is preferred. Other catalysts may also be present, e.g. triphenylphosphite-, triphenylphosphine-, triphenylantimonite-, triphenylarsenite-, methylphosphite- and beta-chloroethyl phosphite-nickel carbonyls. Preferably 0.01-4% by weight of the diene of a polymerization inhibitor is added such as a phenol, amine, aromatic polynitro compound or terpene. Solvents may also be present, e.g. benzene, petroleum ether, naphtha, tetrahydrofuran, toluene, p-cymene, 1,5-cyclo-octadiene, or dicyclopentadiene. The reaction time may be ten minutes to 24 hours or in continuous operations the space rate may be 0.2-4 volumes of diene per reactor volume per hour. In an example chloroprene is converted to dichlorocyclo-octadiene in the presence of bis(triphenylstibine)nickel dicarbonyl. |
| priorityDate | 1959-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.