Abstract: A process for producing a polymer or copolymer of an olefin containing at least 3 carbon atoms which comprises polymerizing or copolymerizing at least one olefin containing at least 3 carbon atoms, or copolymerizing the olefin with to 10 mole % of ethylene and/or a diolefin in the presence of a catalyst composed of (A) a magnesium-containing solid titanium catalyst component and (B) an organometallic compound of a metal of Groups I to III of the periodic table; wherein the solid titanium catalyst component (A) is a composition formed by contacting(i) a reaction product of an organic magnesium compound containing magnesium directly bonded to at least one carbon atom with an organic silicon-containing compound selected from the group consisting of organic silanols containing at least one hydroxyl group directly bonded to silicon and organopolysiloxanes,(ii) an organic acid ester, and(iii) a titanium compound.

Abstract: In a process for producing an olefin polymer or copolymer by polymerizing an alpha-olefin having at least 3 carbon atoms or copolymerizing such alpha-olefins with each other or such an alpha-olefin with up to 20 mole % of ethylene and/or a diene in the presence of a catalyst comprising (1) a solid titanium catalyst component having magnesium, halogen, titanium, phosphorus and a carboxylic acid ester and (2) an organometallic compound of a metal of Groups I to III of the Mendelejeff's periodic table; the improvement wherein said catalyst is composed of (A) the solid titanium catalyst component (1) in which the molar ratio of the phosphorus to the carboxylic acid ester is from about 0.05 to about 2 and which has a specific surface area of not less than about 40 m.sup.2 /g, (B) the organometallic compound (2), and (C) an electron donor; and a catalyst used for aforesaid process.

Abstract: A method for treating an olefin polymer, which comprises contacting an olefin polymer obtained by polymerizing an olefin in the presence of a catalyst composed of (A) a highly active transition metal compound, (B) an organoaluminum compound and (C) a carbonyl- or Si-containing electron donor, with (D) an organometallic compound of a metal of Groups I to III of the periodic table after the polymerization. This method can markedly reduce the amount of an electron donor remaining in an olefin polymer after polymerization, the electron donor being an ingredient of a catalyst used in the polymerization and constituting the main cause of an offensive odor which the resulting polymer gives off.

Abstract: New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are(a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom;(b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and(c) a solid component comprising, at least on surface, the reaction product of a halogen. Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4.Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.

Abstract: This invention provides a process for producing spherical carrier particles for olefin polymerization catalyst, which comprises(i) forming a suspension of molten droplets of an adduct of a halogen-containing magnesium compound and an active hydrogen-containing organic compound in an organic liquid medium in the presence of at least one oil soluble surface-active agent as an auxiliary component, and(ii) quenching the resulting suspension to solidify the adduct particles.

Abstract: A process for producing an ethylene copolymer having a density of from 0.900 to 0.945 g/cm.sup.3 by copolymerizing in two steps a predominant amount of ethylene with a minor amount of an alpha-olefin containing at least 3 carbon atoms at room temperature to not more than about 100.degree. C. under a pressure of about 1 to about 100 kg/cm.sup.2 in the presence of a catalyst composed of (A) a titanium catalyst component supported on a magnesium compound and (B) an organoaluminum compound; characterized in that said copolymerization is carried out in(i) a first step where about 0.01 to about 50 g, per gram of the titanium catalyst component (A), of the alpha-olefin containing at least 3 carbon atoms is polymerized, said catalyst further comprising an organic acid ester (C), and then(ii) a second step where the final product of ethylene copolymer is formed in an amount more than about 100 times the weight of the polymer formed in the first step.

Abstract: A process for preparing an olefin polymer or copolymer by polymerizing or copolymerizing an olefin containing at least 3 carbon atoms which may contain at most 10 mole % of ethylene and/or a diene, in the presence of a catalyst composed of (A) a solid titanium catalyst component prepared by(1) reacting a mechanically pulverized product of an organic acid ester and a halogen-containing magnesium compound, with an active hydrogen-containing organic compound in the absence of mechanical pulverization,(2) reacting the resulting reaction product with an organometallic compound of a metal of Groups I to III of the periodic table in the absence of mechanical pulverization, and(3) washing the resulting solid reaction product with an inert organic solvent, reacting the washed solid reaction product with a titanium compound in the absence of mechanical pulverization, and separating the solid from the reaction system,and (B) an organometallic compound of a metal of Groups I to III of the periodic table; and a catalyst u

Abstract: A solid titanium catalyst component for the production of olefin polymers or copolymers, comprising titanium, magnesium, halogen and an electron donor as essential ingredients, said component further comprising an inert liquid hydrocarbon in an amount of, based on the weight of said component, of about 1 to about 10% when said component has a uniformity coefficient of at least 4, and about 1 to about 25% when said component has a uniformity coefficient of less than 4.

Abstract: A process for preparing a polymer or copolymer of an olefin having at least 3 carbon atoms which comprises polymerizing or copolymerizing an olefin having at least 3 carbon atoms and containing 0 to 10 mole % of another olefin or diolefin in the presence of a catalyst composed of (i) a solid titanium catalyst component and (ii) an organoaluminum compound; wherein the solid titanium catalyst component is obtained by contacting(1) a magnesium containing copulverization product comprising (A) an aluminum or germanium compound selected from the group consisting of aluminum compounds of the formula AlR.sub.n X.sub.3-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 O<n.ltoreq.3, and germanium compounds of the formula GeR.sub.m X.sub.4-m wherein R and X are as defined above, and 0.ltoreq.m.ltoreq.

Abstract: New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are(a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom;(b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and(c) a solid component comprising, at least on the surface, the reaction product of a halogenated Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4.Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.

Abstract: A process for polymerizing or copolymerizing .alpha.-olefins having at least 3 carbon atoms or copolymerizing .alpha.-olefins having at least 3 carbon atoms with not more than 50 mole % of ethylene in the presence of a catalyst composed of an organometallic compound of a metal of Groups I to III of the periodic table and a titanium catalyst component supported on a halogen-containing magnesium compound, said titanium catalyst component being a solid reaction product obtained by treating (i) a mechanically copulverized product of a halogen-containing compound and an organic acid ester with (ii) an organo-metallic compound of a metal of Groups I to III of the periodic table, and then reacting the resulting solid product with (iii) a titanium compound in the absence of mechanical pulverization.

Abstract: A process for preparing highly stereoregular polyolefins in the presence of a catalyst comprising (A) a titanium-containing solid catalyst component composed of an organic complex derived from(i) a magnesium halide(ii) an organopolysiloxane selected from the group consisting of compounds of the formulaQ(Q.sub.2 SiO).sub.n SiQ.sub.3, (Q.sub.2 SiO).sub.n and X(Q.sub.2 SiO).sub.n SiQ.sub.2 X,(iii) an organic carboxylic acid ester, and(iv) a titanium compound of the formulaTi(OR).sub.l X.sub.4-l, and(B) an organoaluminum catalyst component of the formulaR'mAl(OR').sub.3-m,said organic complex being derived by bringing the component (i) into contact with a combination of the components (ii) and (iii) or a combination of the components (ii), (iii) and (iv) under mechanical pulverisation conditions and then treating the resulting pulverized composition with the component (iv) in the absence of mechanical pulverization.

Abstract: A process for polymerizing or copolymerizing .alpha.-olefins in the presence of a catalyst composed of (A) a mechanically pulverized solid titanium-containing catalyst component and (B) an organometallic compound of a metal of Groups I to III of the periodic table, wherein said titanium-containing component is a solid halogen-containing titanium catalyst component obtained by reacting a mechanically copulverized solid product in the absence of mechanical pulverization with a titanium compound which is liquid under the reaction conditions, said mechanically copulverized product being derived from (1) a magnesium compound, (2) an organic acid ester, and (3) an active hydrogen-containing compound selected from the group of alcohols and phenols; and a catalyst composition used therefor.

Abstract: Highly stereoregular polymers or copolymers of .alpha.-olefins containing at least 3 carbon atoms are prepared in high yields by polymerizing or copolymerizing the .alpha.-olefins in the presence of a catalyst composed of (a) an improved solid transition metal catalyst component prepared by reacting (1) a magnesium-containing reaction product derived from a member of the group consisting of (i) a magnesium halide, (ii) an active hydrogen-containing compound, (iii) an organic acid ester and (iv) a silicon or tin compound containing at least one halogen atom or hydrocarbon group bonded directly to silicon or tin with (2) a titanium compound, and (b) an organometallic compound of a metal selected from aluminum, magnesium and zinc.

Abstract: A process for preparing a highly stereoregular olefin polymer or copolymer in high yield and with good reproducibility of quality and yield, which comprises polymerizing or copolymerizing an olefin containing at least 3 carbon atoms in the presence of a catalyst comprising(a) a solid titanium catalyst component obtained by reacting a solid magnesium component with a titanium compound in the absence of a free organometallic compound of a metal of Groups I to III of the periodic table and separating the solid component of the resulting reaction product, said magnesium component being obtained by separating a solid from a suspension of a reaction product derived from (i) a magnesium dihalide, (ii) an active hydrogen-containing organic compound, (iii) an organic acid ester and (iv) an organometallic compound of a metal of Groups I to III of the periodic table, and(b) an organometallic compound of a metal of Groups I to III of the periodic table.