Comminution Of Transition Metal Containing Catalyst Patents (Class 526/906)
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Patent number: 4079175Abstract: A method for the polymerization or copolymerization of .alpha.-olefin wherein .alpha.-olefin is polymerized or copolymerized in the presence of a catalyst essentially comprising a reformed titanium trichloride and an organoaluminum compound. The reformed titanium trichloride is prepared by simultaneously pulverizing an organoaluminum compound and a crystalline titanium trichloride compound, the latter comprising titanium trichloride and aluminum trichloride, treating the pulverized mixture with a solvent selected from aromatic hydrocarbons, aromatic hydrocarbon halides and organic ethers, separating the treated material from the solvent, and heating the separated material.Type: GrantFiled: August 30, 1976Date of Patent: March 14, 1978Assignee: Toyo Stauffer Chemical Co., Ltd.Inventors: Shoichi Tokunaga, Atsumi Kato, Teruhiro Setoguchi, Shoji Mizuno
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Patent number: 4064334Abstract: According to the present invention, there is provided a process for preparing polyolefins by polymerizing or copolymerizing olefins in the presence of a catalyst consisting of a solid component and an organometallic compound component, characterized in that said solid component is obtained by copulverizing1. a magnesium halide,2. a compound represented by the general formula Al(OR)mX.sub.3-m wherein R is alkyl and/or aralkyl having 1 to 20 carbon atoms and may be the same or different, X is halogen and O<m.ltoreq.3,3. a tetravalent titanium compound, and4. a trivalent titanium compound and in that said organometallic compound component is a mixture of5. a trialkylaluminum and6. a compound represented by the general formula AlR'nX.sub.3-n wherein R' is alkyl having 1 to 10 carbon atoms and may be the same or different, X is halogen and O<n<3.Type: GrantFiled: July 15, 1976Date of Patent: December 20, 1977Assignee: Nippon Oil Company Ltd.Inventors: Nobuyuki Kuroda, Toru Nakamura, Takeichi Shiraishi, Kazuo Matsuura, Mituji Miyoshi
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Patent number: 4063009Abstract: Alpha olefins are polymerized alone or in admixture at comparatively low pressures to produce polymers employing a two-component catalyst wherein one component is an organozinc or organomagnesium compound, e.g. zinc diethyl, magnesium diphenyl, propyl magnesium chloride, etc. The other component is a salt, oxide or hydroxide of a metal of Group IV-B, V-B or VI-B of the Periodic System, including thorium and uranium.Type: GrantFiled: July 1, 1958Date of Patent: December 13, 1977Assignee: Studiengesellschaft Kohle m.b.H.Inventors: Karl Ziegler, deceased, Heinz Breil, Erhard Holzkamp, Heinz Martin
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Patent number: 4061857Abstract: According to the present invention, there is provided a process for preparing polyolefins which comprises polymerizing or copolymerizing olefins using as catalyst a solid component containing a titanium compound and/or a vanadium compound, and an organoaluminum compound and/or an organozinc compound, said solid component being obtained by copulverizing (1) a magnesium halide and/or a manganese halide, (2) an aluminum oxyhalide and (3) a titanium compound and/or a vanadium compound.Type: GrantFiled: May 6, 1976Date of Patent: December 6, 1977Assignee: Nippon Oil Company Ltd.Inventors: Nobuyuki Kuroda, Takeichi Shiraishi, Akio Itoh, Kazuo Matsuura, Mituji Miyoshi
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Patent number: 4057680Abstract: In the method of polymerizing .alpha.-olefins by contacting an .alpha.-olefin under polymerization conditions with a stereospecific catalyst comprising a titanium trichloride component and an organoaluminium compound, the improvement wherein said titanium trichloride component is ground during or after contact with a treating agent, said treating agent being selected from at least one ofA. an alkylene oxide, andB. a lactone.Type: GrantFiled: August 10, 1976Date of Patent: November 8, 1977Assignee: Showa Denko Kabushiki KaishaInventors: Isamu Yamazaki, Yoichi Toyama, Kiwami Hirota, Hisashi Takeuchi
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Patent number: 4051307Abstract: An olefine polymerization catalyst includes a complex compound of phosphorus having the general formulaR".sub.2 P(Q).sub.a XP(Q).sub.a R".sub.2where the various groups are defined. Typical phosphorus compounds include[(CH.sub.3).sub.2 N].sub.2 P(O)OP(O)[N(CH.sub.3).sub.2 ].sub.2.catalyst systems containing these phosphorus compounds give a high rate of polymerization together with a low proportion of soluble polymer. The phosphorus compound can be ball-milled with the titanium compound to give an improved effect.Type: GrantFiled: June 4, 1973Date of Patent: September 27, 1977Assignee: Imperial Chemical Industries LimitedInventors: Anthony David Caunt, Michael Stanley Fortuin
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Patent number: 4048415Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:A. a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; andB. an organoaluminum compound, and the catalyst therefor.Type: GrantFiled: September 30, 1971Date of Patent: September 13, 1977Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Norio Matsuzawa, Hidesaburo Oi, Hiroshi Nishimura, Shigeru Wada, Juntaro Sasaki
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Patent number: 4028481Abstract: In the polymerization of .alpha.-olefins, a titanium trichloride containing catalyst activated by copulverization with at least one additive selected fromI. an organic compound containing oxygen, sulfur or phosphorus such as:A. Organic oxygen compounds selected from ethers, ketones and esters;B. Organic sulfur compounds selected from thioethers, thiophenols and thioalcohols; andC. Organic phosphorus compounds.Ii. an organic compound of (I) containing oxygen, sulfur or phosphorus in combination with an aluminum halide, andIii. a complex or reaction product of an organic compound of (I) with an aluminum halide.Provides substantially improved catalytic activity and reduces amorphous polymeric by-products while enhancing stereoregularity. The catalytic activity of these catalysts is further enhanced by washing with an organic solvent subsequent to copulverization to remove excess additive. Preferred catalysts are those which contain aluminum chloride with the titanium trichloride.Type: GrantFiled: August 6, 1973Date of Patent: June 7, 1977Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tetsunosuke Shiomura, Akiro Ito, Yoshio Morimoto, Tetsuya Iwao
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Patent number: 4020264Abstract: Crystalline polyolefins of high molecular weight and high crystallinity are produced in high yields by polymerizing an olefin in the presence of a catalytic system comprising a combination of an organoaluminum compound and a modified titanium composition which has been prepared by milling together a halogen compound of titanium of a valence lower than the maximum valence (e.g. titanium trichloride) and an .alpha., .beta.-unsaturated carboxylate ester.Type: GrantFiled: December 20, 1971Date of Patent: April 26, 1977Assignee: Mitsubishi Petrochemical Company LimitedInventors: Junichi Hotta, Masaki Fujii
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Patent number: 3991260Abstract: Process for preparing polyolefins by polymerizing or copolymerizing olefins in the presence of an organometallic compound and a catalyst comprising magnesium, titanium and aluminum or magnesium, vanadium and aluminum, the catalysts being prepared by copulverizing a magnesium dihalide, an aluminum alkoxide and a titanium or vanadium compound.Type: GrantFiled: October 7, 1974Date of Patent: November 9, 1976Assignee: Nippon Oil Corporation Ltd.Inventors: Kazuo Matsuura, Nobuyuki Kuroda, Takeichi Shiraishi, Mituji Miyoshi
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Patent number: 3987233Abstract: In a method for producing a polymer or a copolymer of ethylene carried out in the presence of a catalyst obtained by a combination of a solid product containing a transition metal of the fourth a or fifth a group and an organoaluminum compound, an improvement has been made to provide a catalyst having such an efficiency as being capable of omitting ash-removal step and providing a high production yield of polymer per unit volume of polymerization vessel per hour and a polymer having a high B.D. Said catalyst can be obtained by (1) reacting a halide of trivalent metal (A) with a divalent metal compound or its derivative (B) such as hydroxide, oxide or carbonate thereof, or hydrate of these, to produce a solid product (I); (2) reacting said solid product (I) with a chain or cyclic polysiloxane having a general formula of ##EQU1## WHEREIN R.sub.1 and R.sub.Type: GrantFiled: April 29, 1975Date of Patent: October 19, 1976Assignee: Chisso CorporationInventors: Akihiro Sato, Hiroshi Shimizu, Atsuyuki Kachi