Contains Organic Non-metal Containing B, Si, N, P, Or Chalcogen Material Patents (Class 526/124.8)
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Patent number: 11945896Abstract: A Ziegler-Natta catalyst composition is disclosed. The catalyst composition includes an internal electron donor with improved polymerization kinetics, a long lifetime, improved stereoselectivity and/or improved hydrogen response.Type: GrantFiled: September 10, 2020Date of Patent: April 2, 2024Assignee: W.R. Grace & Co.-CONN.Inventors: Joseph Coalter, III, Rose Kent, Adam Marwitz, Ronald Epstein, Michael Elder
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Patent number: 11939417Abstract: A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl2) support. The metal-ligand complex has a structural formula (L)aM(Y)m(XR2)b, where M is a metal cation; each L is a neutral ligand or (?O); each Y is a halide or (C1-C20)alkyl; each XR2 is an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and R2 is (C1-C20)hydrocarbyl or (C1-C20) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.Type: GrantFiled: May 29, 2019Date of Patent: March 26, 2024Assignee: Dow Global Technologies LLCInventors: Linfeng Chen, Mingzhe Yu, Mehmet Demirors, Andrew T. Heitsch, Jeffrey A. Sims, David Gordon Barton, Kurt F. Hirsekorn, Peter N. Nickias
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Patent number: 11897975Abstract: The present invention relates to a multi-stage process for producing a C2 to C8 olefin polymer composition in a process comprising at least two reactors, wherein a pre-polymerized solid Ziegler-Natta catalyst is prepared by carrying out an off-line pre-polymerization of a solid Ziegler-Natta catalyst component with a C2 to C4 olefin monomer before feeding to the polymerization process.Type: GrantFiled: September 19, 2019Date of Patent: February 13, 2024Assignee: BOREALIS AGInventors: Klaus Nyfors, Vasileios Kanellopoulos, Erno Elovainio, Ravindra Tupe, Victor Sumerin
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Patent number: 11857935Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(Cl)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.Type: GrantFiled: May 23, 2019Date of Patent: January 2, 2024Assignee: Dow Global Technologies LLCInventors: Mingzhe Yu, David Gordon Barton, Kurt F. Hirsekorn, Sadeka Onam, Peter N. Nickias, Andrew T. Heitsch, Thomas H. Peterson
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Patent number: 11764358Abstract: The present disclosure relates to an all solid-state battery cell and a method for manufacturing the same. The gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte with a conductive material, and an organic solid electrolyte membrane is interposed between the positive electrode and the negative electrode. The method comprises a solvent annealing process to improve the contact between the electrode active material particles and the conductive material and to improve the contact between the electrode active material layer and the organic solid electrolyte membrane, thereby providing an all solid-state battery cell with improved ion conductivity and capacity realization.Type: GrantFiled: May 3, 2019Date of Patent: September 19, 2023Inventors: Jung-Pil Lee, Ji-Young Kim, Ji-Hoon Ryu, Sung-Joong Kang, Jae-Hyun Lee
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Patent number: 11267940Abstract: A method for producing aluminum oxide is provided. The method uses an aluminum-oxide-forming agent containing a partially hydrolyzed aluminum alkyl compound containing an aluminum trialkyl or a mixture thereof, and a solvent. It is thus possible to produce an aluminum oxide thin film or aluminum oxide particles on or in a substrate that is not resistant to polar solvents. A method of producing a polyolefin-based polymer nanocomposite containing zinc oxide particles or aluminum oxide particles using a solution containing a partially hydrolyzed zinc alkyl or a solution containing a partially hydrolyzed aluminum alkyl is also provided. The polyolefin-based polymer nanocomposite contains a polyolefin substrate and zinc oxide particles or aluminum oxide particles, and does not contain a dispersant. The zinc oxide particles or aluminum oxide particles have an average particle size of less than 100 nm.Type: GrantFiled: May 12, 2017Date of Patent: March 8, 2022Assignee: TOSOH FINECHEM CORPORATIONInventors: Koichiro Inaba, Kouji Toyota, Kenichi Haga, Toshio Naka, Toshiaki Taniike
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Patent number: 8268945Abstract: A catalyst component for ethylene polymerization, comprising an organic silicon compound of the formula (I), below wherein R1 is chosen from C3-C20 aliphatic hydrocarbyl groups, and is substituted with at least one substituent chosen from halogens, C1-C6 acyloxy groups, epoxy, amino, C1-C6 alkylamino groups, di(C1-C6 alkyl)amino groups, C1-C6 alkoxy groups, and oxo group; R2, R3 and R4, which may be the same or different, are each chosen from C1-C10 aliphatic hydrocarbyl, C3-C10 alicyclic hydrocarbyl, C6-C10 aryl, C7-C10 aralkyl, and C7-C10 alkaryl groups. A process for preparing the catalyst component and an active catalyst comprising the catalyst component and useful in polymerization, such as ethylene polymerization.Type: GrantFiled: August 20, 2010Date of Patent: September 18, 2012Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical CorporationInventors: Taoyi Zhang, Junling Zhou, Hongtao Wang, Zifang Guo, Qingqiang Gou, Hongxu Yang, Ruixia Li, Shiyuan Xu
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Patent number: 7939460Abstract: A production process is provided for an olefin polymerization catalyst component precursor, including the steps of (I) adding an organomagnesium compound to a solution containing a solvent, a Si—O bond-containing silicon compound, and a defined titanium compound, under agitation, and continuing the agitation until a magnesium concentration in a liquid phase of a reaction mixture decreases to 9 ppm by weight or lower, and (II) solid-liquid separating the reaction mixture. A production process is also provided for an olefin polymerization catalyst component using the above precursor. Further, producing process is provided for an olefin polymerization catalyst using the above catalyst component. Still further, a production process is provided for an olefin polymer using the above catalyst.Type: GrantFiled: October 9, 2009Date of Patent: May 10, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Wataru Hirahata, Shinya Nakahara
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Patent number: 7935651Abstract: A method for preparing a titanium-containing Ziegler-Natta catalyst is disclosed. A dialkyl magnesium compound, a trialkyl aluminum compound, and a polymethylhydrosiloxane are first combined in a hydrocarbon solvent. That product is then combined with dry, alcohol-free magnesium chloride. A solid product from the reaction with the magnesium chloride component is isolated and washed with a hydrocarbon solvent. The washed solid product is then combined with an alkyl aluminum dichloride or a dialkyl aluminum chloride to give the catalyst. The catalyst is suitable for both slurry and gas-phase olefin polymerizations. Polyolefins produced with the catalyst have broad molecular weight distributions and narrow distributions of relatively large particles.Type: GrantFiled: February 4, 2010Date of Patent: May 3, 2011Assignee: Equistar Chemicals, L.P.Inventors: Mark K. Reinking, Joachim T. M. Pater, Giampiero Morini
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Publication number: 20110046326Abstract: The invention relates to a catalyst system for polymerization of olefins, the catalyst system comprising a titanium-containing procatalyst carrying internal electron donor(s), an organoaluminium cocatalyst and a mixture of external electron donors, the mixture comprising a carboxylic acid ester or derivatives thereof, an alkoxy silane and a nitrogen based compound. The invention also relates to a process for polymerization of olefin(s) and to the polyolefin synthesized by the process.Type: ApplicationFiled: August 25, 2008Publication date: February 24, 2011Inventors: Virendrakumar Gupta, Harshad Ramdas Patil, Dhananjay Ghelabhai Naik, Sukhdeep Kaur, Gurmeet Singh, Priyanshu Bharatkumar Vyas
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Patent number: 7723449Abstract: The present invention relates to a catalyst for synthesizing a polypropylene with a wide molecular weight distribution and use of the same. The catalyst comprises magnesium halide, titanium-containing compound, and an organic phosphate type electron donor compound. By the catalyst according to the present invention, a propylene polymer with a wide molecular weight distribution, easily controllable isotacticity and good processing properties can be synthesized.Type: GrantFiled: July 3, 2008Date of Patent: May 25, 2010Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Chunyu Zhang, Hongguang Cai, Bin Chen, Yuping Yuan, Qiaofeng Zhang, Weimin Dong, Xuequan Zhang
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Patent number: 7683003Abstract: A method for identifying a catalyst composition for use in the heterogeneous Ziegler-Natta addition polymerization of an olefin monomer, said catalyst composition comprising a procatalyst comprising a magnesium and titanium containing procatalyst and a cocatalyst said method comprising: a) providing a library comprising at least one procatalyst compound, b) forming a catalyst composition library by contacting the member of said procatalyst library with one or more cocatalysts and contacting the resulting mixture with an olefin monomer under olefin polymerization conditions thereby causing the polymerization reaction to take place, c) measuring at least one variable of interest during the polymerization, and d) selecting the catalyst composition of interest by reference to said measured variable.Type: GrantFiled: May 13, 2005Date of Patent: March 23, 2010Assignee: Dow Global Technologies, Inc.Inventors: Richard E. Campbell, Jr., Sylvie Desjardins, Phillip D. Hustad, Duane R. Romer
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Publication number: 20090189127Abstract: An optical resin lens characterized in comprising a polymer prepared employing a production method including a process which polymerizes olefin employing titanium halide and a catalyst comprised of the organic aluminum represented by Formula RnAlX3-n (wherein 1<n?2, R represents a hydrocarbon group, and X represents a halogen atom).Type: ApplicationFiled: February 14, 2005Publication date: July 30, 2009Inventors: Kazuaki Nakamura, Yasuo Kurachi
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Publication number: 20090186994Abstract: The present invention relates to particulate olefin polymerisation catalyst components comprising an alkaline earth metal, a compound of a transition metal and an electron donor, characterized in that the catalyst particle size distribution of the catalyst component is essentially monomodal and has a SPAN value below 1.2, where SPAN is defined as: (Particle diameter at 90% cumulative size)?(Particle diameter at 10% cumulative size)/(Particle diameter at 50% cumulative size).Type: ApplicationFiled: May 31, 2007Publication date: July 23, 2009Applicant: BOREALIS TECHNOLOGY OYInventors: Petri Rekonen, Peter Denifl, Timo Leinonen
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Patent number: 7504464Abstract: A gas phase polymerization process comprising: (1) preparing a solution of a catalyst precursor comprising a mixture of magnesium and titanium compounds, an electron donor and a solvent; (2) adding a filler to the solution from step (1) to form a slurry; (3) spray drying the slurry from step (2) at a temperature of 100 to 140° C. to form a spray dried precursor, (4) slurring the spray dried precursor from step (3) in mineral oil, (5) partially or fully pre-activating the catalyst precursor by contacting the slurry of (4) with one or more Lewis Acids, and (6) transferring the partially or fully activated precursor from step (5) into a gas phase reactor in which an olefin polymerization reaction is in progress.Type: GrantFiled: April 7, 2004Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Stephanie M. Whited, Michael D. Turner, Michael A. Kinnan, Robert J. Jorgensen
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Publication number: 20080103274Abstract: The invention is a two part polymerizable composition comprising in one part i) an organoboron compound capable of forming free radical generating species; and in the second part ii) one or more compounds capable of free radical polymerization; iii) one or more cure accelerators comprising a) at least one compound containing a quinone structure or b) at least one compound containing at least one aromatic ring and one or more substituents on the aromatic ring selected from hydroxyl, ether and both and a compound with a peroxide moiety; and iv) one or more vinyl functional modifiers having a glass transition temperature of ?50° C. or less.Type: ApplicationFiled: October 12, 2006Publication date: May 1, 2008Inventors: Gary L. Jialanella, Eric E. Cole
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Patent number: 7211535Abstract: The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the catalyst can be altered depending on the sequence of addition of the catalyst components. The catalyst consists of compounds of Ti, Mg, Al and optionally an electron donor supported on an amorphous support.Type: GrantFiled: October 29, 2004Date of Patent: May 1, 2007Assignees: Nova Chemicals Corporation, Ineos Europe LimitedInventors: Mark Kelly, Shivendra Kumar Goyal, Victoria Ker, Perry Montyn de Wit, Brian Stephen Kimberley, Peter Phung Ming Hoang
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Patent number: 7183234Abstract: The present invention provides catalyst systems including a Ziegler-Natta or Ziegler-Natta-type catalyst in combination with a mixture of certain electron donors.Type: GrantFiled: April 29, 2004Date of Patent: February 27, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Robert Tan Li, Kevin Wayne Lawson, Aspy Keki Mehta, Prasadarao Meka
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Patent number: 7153803Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of polyethylene containing a solid titanium catalyst component containing a titanium compound and a support made from a magnesium compound, an alkyl silicate, and a monoester. The catalyst system may further contain an organoaluminum compound. Also disclosed are methods of making various types of polyethylene involving polymerizing ethylene in the presence of hydrogen and a catalyst system containing a support made from a magnesium compound, an alkyl silicate and a monoester.Type: GrantFiled: June 28, 2004Date of Patent: December 26, 2006Assignee: Engelhard CorporationInventors: Zhidong Zhu, Main Chang, Christopher J. Aarons
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Patent number: 7084217Abstract: An improved supported Ziegler-Natta catalyst especially useful for olefin polymerisation, the catalyst including a carrier, an organomagnesium compound, a borate compound, and one transition metal compound.Type: GrantFiled: January 30, 2002Date of Patent: August 1, 2006Assignee: B.P. Chemicals Ltd.Inventor: Stephen John Dossett
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Patent number: 7060764Abstract: A method for polymerization and copolymerization of ethylene is disclosed. The polymerization is carried out in the presence of a preactivated titanium solid complex catalyst supported on a carrier containing magnesium. The resulting polymers have the advantage of high bulk density and broad molecular weight distribution.Type: GrantFiled: December 19, 2002Date of Patent: June 13, 2006Assignee: Samsung General Chemicals, Co., Ltd.Inventors: Chun-Byung Yang, Yong-Bok Lee, Sang-Yull Kim, Won-Young Kim
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Patent number: 6992034Abstract: A solid catalyst component useful for the (co)-polymerization of olefins is disclosed. The catalyst component is prepared by reacting an activated magnesium halide composite support with a halogenized transition metal compound and a chelating diamide compound in the presence of organo-magnesium as a promoting agent and halogenized silicon or boron compounds as an activator. The catalyst component can be used with an organo-aluminum compound to provide a solid catalyst system that is compatible with slurry and gas phase polymerization processes. Linear low density polyethylene (LLDPE) produced using the catalyst component of the present invention displays a low molecular weight distribution, improved co-monomer incorporation, low content of the low molecular weight component, and excellent morphological properties such as spherical shape and high bulk density.Type: GrantFiled: July 10, 2003Date of Patent: January 31, 2006Assignee: Formosa Plastics Corporation, U.S.A.Inventors: Guangxue Xu, Honglan Lu, Chih-Jian Chen
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Patent number: 6956002Abstract: A catalyst for olefin polymerization, comprising: a solid catalyst component comprising [A] a solid component having substantially no hydroxyl group, [B] a compound of a transition metal selected from Groups 3-11 of the Periodic Table, and [C] a mixture of an activator compound (C-1) capable of reacting with the transition metal compound [B] to form a metal complex having catalytic activity and an organoaluminum compound (C-2); and [D] an organomagnesium compound soluble in a hydrocarbon solvent which is obtained by reacting (i) an organomagnesium compound represented by the general formula: (Mt)?(Mg)?(R1)a(R2)b wherein Mt is a metal atom belonging to Groups 1-3 of the Periodic Table, R1 and R2 are hydrocarbon groups of 2-20 carbon atoms, and ?, ?, a and b are numerals satisfying the following relationship: 0??, 0<?, 0?a, 0<b, a+b>0, and r?+2?=a+b (where r is a valence of Mt) with (ii) a compound selected from an amine, an alcohol and a siloxane.Type: GrantFiled: October 15, 2002Date of Patent: October 18, 2005Assignee: Asahi Kasei Chemicals CorporationInventors: Takashi Nozaki, Akio Fujiwara
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Patent number: 6784133Abstract: Disclosed is a preparation method of titanium catalyst for olefin polymerization, the method comprising (1) preparing magnesium compound solution by resolving non-deoxidative magnesium halide and IIIA group atom compound in a solvent mixture of cyclic ether, at least one alcohol, phosphorus compound and organosilane with or without hydrocarbon solvent; (2) reacting said magnesium compound solution with titanium compound, silicon compound, tin compound or mixture thereof to produce a support; and (3) reacting said support with titanium compound and electron donor to produce solid complex titanium catalyst, wherein the particle size and particle size distribution f said catalyst are regulated by controlling solubility of the reactants in said steps (2) and/or (3).Type: GrantFiled: June 30, 2003Date of Patent: August 31, 2004Assignee: Samsung Atofina Co. Ltd.Inventors: Il Seop Kim, Moon Young Shin, Ki Su Ro
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Patent number: 6770586Abstract: Solid catalyst components and catalysts which contain (a) magnesium compound, (b) titanium tetrachloride, and (c) a phthalic acid diester or its derivative are useful in the synthesis of olefin polymers in high yields. Particularly, propylene polymers can be obtain in very high yields while retaining high stereoregularity.Type: GrantFiled: April 3, 2002Date of Patent: August 3, 2004Assignee: Toho Titanium Co., Ltd.Inventors: Kunihiko Tashino, Yukihiro Suzuki, Isa Nishiyama, Hayashi Ogawa, Takuma Yoshida, Motoki Hosaka, Maki Sato
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Patent number: 6610802Abstract: The present invention relates to a process for synthesis of polymer compositions with reduced catalyst content, wherein ethylenically unsaturated monomers containing less than 0.5 wt % of ethylenically unsaturated monomers with at least one carboxylic group, sulfonic acid group and/or at least one phosphonic acid group relative to the total weight of the ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts and, after the polymerization, the catalyst contained in the polymer is at least partly separated. For this purpose, the polymer composition is filtered, after the polymerization, in the presence of at least one filter aid which contains at least 0.Type: GrantFiled: May 29, 2001Date of Patent: August 26, 2003Assignee: RohMax Additives GmbHInventors: Sebastian Roos, Boris Eisenberg, Carolin Harpe
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Patent number: 6545106Abstract: Process for the polymerization of olefins, according to which at least one olefin is placed in contact with a catalytic system comprising: a) a solid catalytic complex based on magnesium, transition metal and halogen, the said catalytic complex being prepared by reacting, in a first step, at least one magnesium compound with at least one compound of a transition metal from group IVB or VB of the Periodic Table, until a liquid complex is obtained, and, in a subsequent step, by precipitating the said liquid complex using a halogen-containing organoaluminium compound of general formula AlRnX3-n in which R is a hydrocarbon radical, X is a halogen and n is less than 3, in order to collect a solid catalytic complex, and b) an organometallic compound of a metal from groups IA, IIA, IIB, IIIA and IVA of the Periodic Table, c) at least one electron donor used after the first step in the preparation of the solid catalytic complex leading to the production of a liquid complex.Type: GrantFiled: May 6, 1997Date of Patent: April 8, 2003Assignee: Solvay (Societe Anonyme)Inventor: Jiang Bian
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Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
Patent number: 6537942Abstract: Olefin polymerization catalyests are formed from: (I-2) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compounds, (II-2)(C) a specific organosilicon compound, and, optionally, (III-2) an organometallic compound catalyst component; or the contact product (I-2) may be replaced by one which is obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of the catalyst components for the contact product (I-2).Type: GrantFiled: June 12, 2001Date of Patent: March 25, 2003Assignee: Mitsui Chemicals INCInventors: Tetsunori Shinozaki, Mamoru Kioka -
Patent number: 6531553Abstract: This invention relates to a conventional supported heterogeneous Ziegler-Natta catalyst for the polymerization of olefins. It has been found that adding a lithium compound to a transition metal catalyst component and then adding an organoaluminum co-catalyst and an organosilicon electron donor produces a catalyst which yields polymer with increased molecular weight. The lithium compound is of the general formula LiCp wherein Cp is a cyclopentadienyl or substituted cyclopentadienyl and is preferably lithium cyclopentadienide or lithium indene. Preferably, the molar ratio of lithium compound/transition metal is at least 0.2.Type: GrantFiled: June 7, 1995Date of Patent: March 11, 2003Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Bauch
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Patent number: 6348554Abstract: The invention concerns a method for preparation of a liquid polymer composition, where ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that contain at least one transition metal, in the presence of ligands that can form a coordination compound with the metallic catalysts, the catalyst is oxidized after the polymerization and then the catalyst is separated by filtration, where the composition contains a solvent with a dielectric constant less than or equal to 4.Type: GrantFiled: November 30, 1999Date of Patent: February 19, 2002Assignee: RohMax Additives GmbHInventors: Sebastian Roos, Boris Eisenberg, Michael Mueller
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Patent number: 6294624Abstract: A modified diene elastomer prepared by a process comprising the steps of polymerizing a diolefin compound containing a conjugated double bond in a liquid phase in the presence of a cobalt compound, an organic aluminum compound containing a halogen atom, and water, to give a solution containing a diene elastomer, and reacting the diene elastomer with an elastomer-modifying compound is favorably employed for the manufacture of tire tread, particularly when it is employed in combination with silica as a filler.Type: GrantFiled: January 24, 2000Date of Patent: September 25, 2001Assignees: Ube Industries, Ltd., Sumitomo Rubber Industries, Ltd.Inventors: Tokuji Inoue, Tetsuji Nakajima, Kiyoshige Muraoka, Noriko Yagi
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Patent number: 6271166Abstract: Olefin polymerization catalysts are formed from: (I-1) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound, (II-1) (D) a specific polyether compound and, optionally, (III) an organometallic compound catalyst component; or (I-2) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compounds, (II-2) (C) a specific organosilicon compound, and, optionally, (III) an organometallic compound catalyst component; or the contact product (I-1) or (I-2) may be replaced by one which is obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of the catalyst components for the contact product (I-1) or (I-2).Type: GrantFiled: October 16, 1996Date of Patent: August 7, 2001Assignee: Mitsui Chemicals IncInventors: Tetsunori Shinozaki, Mamoru Kioka
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Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
Patent number: 6214939Abstract: The present invention provides olefin polymerization catalysts and processes for preparing a polypropylene and a propylene block copolymer using the olefin polymerization catalysts. The olefin polymerization catalyst (1) of the invention is formed from: (I-1) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound; (II-1) (D) a specific polyether compound; and optionally, (III) an organometallic compound catalyst component. The olefin polymerization catalyst (2) of the invention is formed from: (I-2) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compound; (II-2) (C) a specific organosilicon compound; and optionally, (III) an organometallic compound catalyst component.Type: GrantFiled: June 3, 1998Date of Patent: April 10, 2001Assignee: Mitsui ChemicalsInventors: Tetsunori Shinozaki, Mamoru Kioka -
Patent number: 6201079Abstract: A propylene polymer made using a magnesium halide-supported, titanium-containing solid catalyst component having a broad processing window is produced by incorporating into the polymerization catalyst system a selected alkyl methyldimethoxysilane, preferably isobutylmethyl-dimethoxysilane. Useful articles made from such resin include OPP film.Type: GrantFiled: September 23, 1996Date of Patent: March 13, 2001Assignee: BP Amoco CorporationInventors: Jerome Anthony Streeky, Bruce Howard Bersted, John William Blake, Daan Feng, Charles Richard Hoppin, Benjamin Samuel Tovrog