公开(公告)号：NO121751B

公开(公告)日：1971-04-05

申请号：NO16927267

申请日：1967-08-05

Applicant: HOECHST AG

Inventor： DIETRICH B ,  KEIL K

IPC: C08F4/00 ,  B01J31/06 ,  B01J37/16 ,  C08F4/60 ,  C08F4/642 ,  C08F4/655 ,  C08F10/00 ,  C08F110/02

Abstract: 1,155,478. Polymerizing ethylene with Zieglertype catalysts. FARBWERKE HOECHST A.G. 9 Aug., 1967 [9 Aug., 1966], No. 36518/67. Heading C3P. Olefin polymers are made by polymerizing ethylene alone or in admixture with up to 10%, of a higher alpha-olefin having 3 to 15 carbon atoms in solution, suspension, or the gaseous phase, at a temperature in the range of 20‹ to 250‹ C., in presence of hydrogen, and under a pressure up to 10 atmospheres and in the presence of as catalyst a mixture of from 0À05 to 0À3 millimole of a trivalent chlorine-containing compound per litre of dispersing agent or solvent, or per half litre of reaction volume, if the polymerization is carried out in the gaseous phase, and an organo-aluminium compound in amount corresponding to from 0À1 to 3À0 millimoles of aluminium equivalent per litre of dispersing agent, solvent, or reaction volume. The organoaluminium compound is selected from, (a) a compound of the formula AlR 1 3 where R 1 represents a C 4 to C 40 hydrocarbon radical or (b) a reaction product of a trialkylaluminium compound or an alkylaluminium hydride with a diolefin having 4 to 20 carbon atoms, e.g. triisobutyl Al and isoprene (polymeric isoprenyl aluminium). The trivalent chlorine-containing Ti-compound is preferably obtained by reducing a compound of the formula Ti(OR) 4-n Cl n where n is 1 to 4, and R represents a C 2 to C 8 hydrocarbon radical, with an alkyl Al sesquichloride, and/or a dialkyl Al monochloride, and/or isoprenyl Al at a temperature in the range of - 60‹ to +70‹C., and if desired heat-treating and washing the product. The monomers polymerized are purified with a copper catalyst. Exemplified polymers are polyethylene, and a copolymer of ethylene and butene-1.