| 摘要 |
1,265,828. Polymerisation catalysts. FARBENFABRIKEN BAYER A.G. 24 April, 1969 [24 May, 1968], No. 20897/69. Heading B1E. [Also in Division C3] A catalyst composition comprises (a) a tungsten salt, (b) a halogenated alcohol in which a halogen atom and a hydroxyl group are attached to adjacent carbon atoms and/or a halogenated phenol and (c) an organoaluminium compound, the molar ratio (a):(b):(c) being 1:0.3-10:0.5-15. Exemplified tungsten salts are the oxytetrachloride, hexachloride and pentabromide; exemplified organoaluminium compounds are triethylaluminium, triisobutylaluminium, trioctylaluminium, diethylaluminium monochloride, diethylaluminium monobromide, monoethylaluminium dichloride and diethylaluminiumethoxide. As exemplified; the catalyst composition comprises (a) tungsten hexachloride, (b) either a halogenated alcohol as afore-defined or a halogenated phenol and (c) either triisobutylaluminium (Examples I to 7 and 12 to 19) or diethylaluminium monochloride (Examples 20 and 21); comparative Examples 8 to 11 relate to catalyst compositions which comprise (a) tungsten hexachloride, (b) either a halogen-free alcohol or a halogenated alcohol which does not have a halogen atom and a hydroxyl group on adjacent carbon atoms and (c) triisobutylaluminium. The catalyst composition may be used in a process for the homo-polymerisation of cyclopentene or the co-polymerisation of cyclopentene and a co-monomer which is an alphaolefin, a conjugated diolefin, a cycloolefin or a polycycloolefin, for example ethylene, propylene, butadiene, isoprene, dimethylbutadiene, cyclobutene, cycloheptene, cyclooctene, cyclododecene, dicyclopentadiene, norbornene or norbornadiene, in the presence of an inert solvent which may be butane, pentane, hexane, iso-octane, cyclohexane, benzene (see Examples 1 to 19), toluene (see Examples 20 and 21) or xylene (see Division C3). |
