摘要:
A process for the preparation of the former catalyst component of a catalyst for the polymerization of olefins composed of a titanium-based catalyst component and an organo aluminium compound is disclosed, which process comprises suspending (a) a fatty acid salt of magnesium and (b) dialkoxymagnesium into (c) a liquid halogenated hydrocarbon to form a first suspension, and adding said first suspension to (d) a titanium halide of the general formula: TiX.sub.4, wherein X represents a halogen atom, to be contacted for reaction to form a first reaction mixture, (e) an electron donor compound being present in at least one of the first suspension, the titanium halide and the first reaction mixture; or suspending the dialkoxymagnesium into the liquid halogenated hydrocarbon to form a second suspension, and adding said second suspension to a mixture of the titanium halide and the fatty acid salt of magnesium to be contacted for reaction to form a second reaction mixture, the electron donor compound being present in at least one of the second suspension, the mixture of the titanium halide and the fatty acid salt of magnesium, and the second reaction mixture.In the polymerization of olefins by use of the former catalyst component, both the amount of catalyst residues in the produced polymer and halogen content therein are greatly reduced with high polymerization activity per unit weight of the former catalyst component and with high yield of stereoregular polymer.
摘要:
A process for the preparation of the former catalyst component of a catalyst for the polymerization of olefins composed of a titanium-based catalyst component and an organo aluminium compound is disclosed.The former catalyst component can readily be produced by contacting (a) a fatty acid salt of magnesium, (b) an electron donor compound and (c) a titanium halide.In the polymerization of olefins by use of the former catalyst component, both the amount of catalyst residues in the produced polymer and halogen content therein are greatly reduced with high polymerization activity per unit weight of the former catalyst component and with high yield of stereoregular polymer.
摘要:
A catalyst for the polymerization of olefins comprising:(A) a catalyst component obtained by a process comprising contacting (a) a fatty acid salt of magnesium, (b) a carbonate of magnesium or a substance containing said carbonate, (c) diester of an aromatic dicarboxylic acid, and (d) a titanium halide of the general formula: TiX.sub.4, wherein X represents a halogen atom;(B) a silicon compound represented by the general formula: SiR.sub.m (OR').sub.4-m, wherein R is hydrogen, alkyl group or aryl group, R' is alkyl group or aryl group, and m is represented as O.ltoreq.m.ltoreq.4; and(C) an organoaluminium compound.Polymerization of olefins by use of the catalyst provides such advantages as high polymerization activity per unit weight of the catalyst component, prolonged polymerization activity, high yield of stereoregular polymer, and a produced polymer free of such an estereal odor as in the prior art, and having high bulk density as well as uniform particle size and shape.
摘要翻译:一种用于烯烃聚合的催化剂,包括:(A)通过以下方法获得的催化剂组分,该方法包括:(a)镁的脂肪酸盐,(b)镁的碳酸盐或含有所述碳酸酯的物质,(c) 芳族二羧酸和(d)通式TiX 4的卤化钛,其中X表示卤素原子; (B)由通式SiRm(OR')4-m表示的硅化合物,其中R是氢,烷基或芳基,R'是烷基或芳基,m表示为O m = 4; 和(C)有机铝化合物。 通过使用催化剂聚合烯烃提供了以下优点:每单位重量的催化剂组分具有高的聚合活性,延长的聚合活性,立体有规聚合物的高收率以及不含现有技术的这种雌蕊气味的生产聚合物,以及 具有高堆积密度以及均匀的粒度和形状。
摘要:
Disclosed is a process for the preparation of the former catalyst component of a catalyst for the polymerization of .alpha.-olefins composed of a titanium-based catalyst component and an organo aluminium compound. According to the above process, a magnesium halide is copulverized with aluminium isopropoxide to form a first copulverization product, to which an electron donor compound is added for copulverization to form a second copulverization product, and the second copulverization product is brought into contact with a titanium halide followed by washing with an inert organic solvent.In the polymerization of .alpha.-olefins by use of the former catalyst component as above, both polymerization activity per unit weight of the catalyst component and yield of stereoregular polymers are remarkably increased.