Process for polymerizing olefins and catalysts therefor
Номер патента: CA1094042A
Опубликовано: 20-01-1981
Автор(ы): Akinori Toyota, Norio Kashiwa, Syuji Minami
Принадлежит: Mitsui Petrochemical Industries Ltd
Опубликовано: 20-01-1981
Автор(ы): Akinori Toyota, Norio Kashiwa, Syuji Minami
Принадлежит: Mitsui Petrochemical Industries Ltd
Реферат: Abstract of the Disclosure The invention is a catalyst for polymerizing or copolymerising an olefin having at least 3 carbon atoms and containing 0 to 10 mole% of another olefin or diolefin, said catalyst comprising (i) a solid titanium catalyst component obtained by contacting (1) a magnesium-containing copulverization product comprising (A) an aluminum or geranium compound selected from the group consisting of aluminum compounds of the formula AlRnX3-n wherein R is a hydrogen atom, or an alkyl, alkenyl, aryl, alkoxy, aryloxy or acyloxy group optionally having a substituent, X is a halogen atom, and 0<n?3, geranium compounds of the formula GeRmX4-m wherein R and X are as defined above, and 0?m?4, (B) a halogen-containing magnesium compound, and (C) an organic acid ester, the compounds (A) and (B), or the compounds (A), (B) and (C) being mechanically copulverized, with (2) a titanium compound (D) in the liquid phase in the absence of mechanical pulverization, the Ti/Wg atomic ratio being about 1/2 to about 1/16, and the halogen/Ti atomic ratio being about 5 to about 40; and (ii) an organoaluminum compound, the ratio of (i) to (ii) being such that the Al atom/Ti atom in (i) is about 10,000. The invention also relates to a process for preparing highly stereoregular polymers or co-polymers using the catalyst.
PROCESS FOR POLYMERIZATION OF .alpha.-OLEFINS AND CATALYSTS THEREFOR
Номер патента: CA1131205A. Автор: Tadashi Asanuma,Tetsunosuke Shiomura. Владелец: Mitsui Toatsu Chemicals Inc. Дата публикации: 1982-09-07.