http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1265075-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate | 1969-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1972-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1265075-A |
| abstract | 1,265,075. Polymerizing α-olefins. FARBWERKE HOECHST A.G. 11 June, 1969 [27 June, 1968 (2)], No. 29554/69. Heading C3P. [Also in Division C2] Ethylene, or a mixture of ethylene and up to 10% by weight of one or more α-olefins of the formula R-CH = CH 2 wherein R is C 1-13 hydrocarbon, is polymerized at 20-120‹ C. and up to 20 atmospheres, in solution, suspension or the gaseous phase in the presence of a catalyst comprising (A) the reaction product of a tetravalent titanium compound containing halogen and alkoxy or aralkoxy groups and an inorganic or halogen-containing magnesium compound which contains at least 1À5 moles of hydroxy groups per gram-atom of magnesium; and (B) an organo-aluminium compound. The magnesium compound may have the general formula MgCl 2 .XMg(OH) 2 wherein X is at least three or it may be a magnesium oxychloride cement. It may be reacted with an inorganic metal compound which will not inhibit polymerization, e.g. an oxide, hydroxide, halide, sulphate, carbonate, phosphate or silicate, preferably zinc chloride, before reaction with the tetravalent titanium compound which may have the formula TiX n (OR) 4-n wherein R is C 1-18 hydrocarbon, X is chlorine or bromine and n is 1-3, e.g. diethoxytitanium dichloride, triethoxytitanium chloride, di-isopropoxy titanium dichloride, tri - isopropoxytitanium chloride. The organo-aluminium compound (B) is preferably trialkylaluminium, dialkylaluminium hydride, dialkylaluminium chloride, alkylaluminium sesquichloride or the reaction product of trialkylaluminium or dialkylaluminium hydride with a C 4-20 diolefin. The component (A) may be treated with the organoaluminium compound (B) prior to polymerization at - 30-100‹ C. in order to reduce the tetravalent titanium compound to a lower valency. |
| priorityDate | 1968-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.