Two Or More Group Iiia Metals In Elemental Form Or Bonded To Hydrogen Or Carbon Atom Patents (Class 526/153)
-
Patent number: 7202315Abstract: A process for polymerizing ethylene comprising contacting under polymerization condition ethylene and optionally one or more olefins with a catalyst system obtainable by contacting: a bis amido compound of formula (I) wherein Y is Si, Ge and Sn; X is hydrogen, halogen or an hydrocarbon radical; R1, R2, R3, R4, R5 and R6, are hydrocarbon radical; Q is a neutral Lewis base; and m is 0–2; one or more boron activating cocatalysts and one or more aluminum alkyls or alumoxanes.Type: GrantFiled: September 24, 2001Date of Patent: April 10, 2007Assignee: Basell Polyolefine GmbHInventors: Tiziano Dall'Occo, Andrew D. Horton, Bart J. Ruisch, Klaas L. von Hebel, Arie van Zon, Henri H. Deuling, Eric J. M. de Boer
-
Patent number: 7169870Abstract: The present invention relates to a process for the preparation random copolymers of butadiene and isoprene, essentially consisting of reacting a catalytic system in the presence of butadiene and isoprene and using, as catalytic system, a system based on at least:—a conjugated diene monomer,—an organic phosphoric acid salt of one or more rare earth metals,—an alkylating agent consisting of an alkylaluminium of the formula AlR3 or HAlR2, and—a halogen donor consisting of an alkylaluminium halide, said salt being in suspension in at least one inert, saturated and aliphatic or alicyclic hydrocarbon solvent, which is included in said catalytic system, and the “alkylating agent:rare earth salt” molar ratio falls within a range of from 1 to 8, and performing the copolymerization reaction in an inert hydrocarbon polymerisation solvent or without solvent. These copolymers are in particular such that the butadiene and isoprene units which they comprise each have an elevated content of cis-1,4 linkages.Type: GrantFiled: May 3, 2006Date of Patent: January 30, 2007Assignee: Michelin Recherche et Technique S.A.Inventor: Philippe Laubry
-
Patent number: 7157533Abstract: A process is described for obtaining from an “FCC” initial C5 fraction which is enriched with isoprene and purified and usable for the selective polymerization of isoprene. A process is also described for obtaining an isoprene homopolymer from a polymerization medium comprising isoprene and at least one methyl butene, such as said “FCC” C5 fraction which is enriched with isoprene and purified. The process of obtaining the final fraction from the initial C5 fraction includes: a catalytic hydrogenation reaction of said initial C5 fraction by a palladium-based catalyst, which produces an intermediate C5 fraction comprising n-pentenes in a mass ratio which is less than 0.Type: GrantFiled: July 21, 2005Date of Patent: January 2, 2007Assignee: Michelin Recherche et Technique S.A.Inventor: Sylvie Gandon-Pain
-
Patent number: 7151146Abstract: The present invention relates to a method for preparing neodymium-carbon-nanotube and a process for preparing 1,4-cis-polybutadiene utilizing the same and more particularly, neodymium-carbon-nanotube. Neodymium is introduced by coordination with carboxylic acid, which is formed on the surface of carbon nanotube. In 1,3-butadiene polymerization with the neodymium-catalyst comprising the neodymium-carbon nanotube, a particular halogen compound, and a particular organometallic compound in an appropriate ratio, high 1,4-cis polybutadiene having molecular weight of 10,000 to 2,000,000 is produced, which exhibits excellent mechanical properties such as elasticity and durability.Type: GrantFiled: December 23, 2005Date of Patent: December 19, 2006Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Gwanghoon Kwag, Pilsung Kim, Shin Han, Hyung Kyu Choi, Dong Hwan Kim, Seung Hwa Lee, Sung Hoon Han
-
Patent number: 7115693Abstract: The present invention relates to a process for the preparation random copolymers of butadiene and isoprene, essentially consisting of reacting a catalytic system in the presence of butadiene and isoprene and using, as catalytic system, a system based on at least:—a conjugated diene monomer,—an organic phosphoric acid salt of one or more rare earth metals,—an alkylating agent consisting of an alkylaluminium of the formula AlR3 or HAlR2, and—a halogen donor consisting of an alkylaluminium halide, said salt being in suspension in at least one inert, saturated and aliphatic or alicyclic hydrocarbon solvent, which is included in said catalytic system, and the “alkylating agent:rare earth salt” molar ratio falls within a range of from 1 to 8, and performing the copolymerisation reaction in an inert hydrocarbon polymerisation solvent or without solvent. These copolymers are in particular such that the butadiene and isoprene units which they comprise each have an elevated content of cis-1,4 linkages.Type: GrantFiled: May 28, 2004Date of Patent: October 3, 2006Assignee: Michelin Recherche et Technique S.A.Inventor: Philippe Laubry
-
Patent number: 7101940Abstract: The invention relates to a chemical compound of formula (I), wherein M1 represents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; R1 is the same or different and represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon; R2 is the same or different and represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon; R3 represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon, and; R4 represents a hydrogen atom; whereby R2 and R3 are always different from one anotherType: GrantFiled: December 21, 2000Date of Patent: September 5, 2006Assignee: Basell Polyolefine GmbHInventors: Jörg Schottek, Heike Gregorius, David Fischer, Iris Kuellmer
-
Patent number: 7078466Abstract: A process is described for the preparation of polydienes with a low vinyl content and having a branched structure effected by means of the polymerization of conjugated dienes in the presence of catalysts based on rare-earth compounds. The resulting polymers are characterized in that they have a cis content varying from 80 to 96% and prove to be branched with consequent low viscosity values in solution.Type: GrantFiled: December 17, 2003Date of Patent: July 18, 2006Assignee: Polimeri Europa S.p.A.Inventors: Alessandro Balducci, Sandra Righi
-
Patent number: 7056994Abstract: The present invention relates to a catalyst composition for polymerization of a conjugated diene, comprising: (A) a metallocene-type complex represented by a general formula (I): (C5R1R2R3R4R5)aMXb.Lc (where, M represents a rare earth metal; C5R1R2R3R4R5 represents a substituted cyclopentadienyl group; R1 to R5 represent the same or different hydrocarbon groups (except when R1=R2=R3=R4=R5=a methyl group); X represents a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, or a hydrocarbon group having 1 to 20 carbon atoms; L represents a Lewis basic compound; “a” represents an integer of 1, 2, or 3; “b” represents an integer of 0, 1, or 2; and “c” represents an integer of 0, 1, or 2); and (B) an ionic compound composed of a non-coordinating anion and a cation, and/or an aluminoxane.Type: GrantFiled: March 28, 2003Date of Patent: June 6, 2006Assignee: RikenInventors: Shojiro Kaita, Zhaomin Hou, Yasuo Wakatsuki
-
Patent number: 7056998Abstract: The present invention relates to a catalytic system usable for the preparation of polybutadienes by polymerisation, to a process for the preparation of said catalytic system and to a process for the preparation of polybutadienes by means of this catalytic system. A catalytic system according to the invention is based on at least: a conjugated diene monomer, an organic phosphoric acid salt of one or more rare earth metals, said salt being in suspension in at least one inert, saturated and aliphatic or alicyclic hydrocarbon solvent, an alkylating agent consisting of an alkylaluminium of formula AlR3 or HAlR2, the “alkylating agent:rare earth salt” molar ratio being greater than 5, and a halogen donor which belongs to the family of alkylaluminium halides with the exception of alkylaluminium sesquihalides, and, according to the invention, said catalytic system comprises said rare earth metal(s) in a concentration equal to or greater than 0.005 mol/l.Type: GrantFiled: November 16, 2004Date of Patent: June 6, 2006Assignee: Michelin Recherche et Technique S.A.Inventors: Philippe Laubry, Fanny Barbotin
-
Patent number: 7026415Abstract: Catalyst systems and methods for olefin polymerization are disclosed. The polymerizations are performed in the presence of a clathrochelate which comprises a transition metal ion and an encapsulating macropolycyclic ligand. At least one of the capping atoms of the macropolycyclic ligand is a Group 3–10 transition metal or a Group 13 atom. When a capping atom is a Group 3–10 transition metal, the clathrochelate can be used with an activator to polymerize olefins. When a capping atom is a Group 13 atom, the clathrachelate can be used as an activator for an olefin polumerization. Clathrochelates allow polyolefin markers to fine tune catalyst reactivity and polyolefin properties.Type: GrantFiled: February 17, 2004Date of Patent: April 11, 2006Assignee: Equistar Chemicals, LPInventors: Sandor Nagy, Barbara M. Tsuie
-
Patent number: 7009014Abstract: A process for polymerizing an olefin is capable of polymerizing an olefin with excellent polymerization activity, and comprises polymerizing or copolymerizing an olefin at a polymerization reaction temperature of 50 to 200° C. in the presence of a catalyst comprising a transition metal compound (A) represented by the following formula (I), a compound (B-1) having a reduction ability which reacts with the transition metal compound (A) to convert an imine structure moiety to a metal amide structure, and a compound (B-2) which reacts with the transition metal compound (A) to form an ion pair; wherein M is a transition metal atom of Groups 3 to 11 of the periodic table; m is an integer of 1 to 6; Y is O, S, Se, or —C(R7)—; R1 to R7 may be the same or different, and are each a hydrogen atom, a halogen atom, a hydrocarbon group, an oxgen-containing group, a nitrogen-containing group and the like; n is a number satisfying a valence of M; and X is a hydrogen atom, a halogen atom, a hydrocarbon group and the like.Type: GrantFiled: June 29, 2001Date of Patent: March 7, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Yasuhiko Suzuki, Tomoaki Matsugi, Yukihiro Takagi, Yasunori Yoshida, Junji Saito, Shigekazu Matsui, Yoshihisa Inoue, Terunori Fujita
-
Patent number: 6995235Abstract: Films and methods of forming films comprising first combining in a reactor olefins, a catalyst composition and an activator; wherein the activator is present from less than 50 wt % in a diluent by weight of the activator and diluent; followed by isolating a polyolefin having a density of from 0.940 to 0.980 g/cm3; and finally, extruding the polyolefin into a film having a gel count of less than 200 gels/m2.Type: GrantFiled: May 2, 2005Date of Patent: February 7, 2006Assignee: Univation Technologies, LLCInventors: Fred D. Ehrman, Rainer Kolb, Chi-I Kuo, Porter C. Shannon, Keith W. Trapp
-
Patent number: 6992157Abstract: The present invention provides synthetic polyisoprenes having a high cis-1,4 linkage content and a process for their preparation. The synthetic polyisoprenes according to the invention have a cis-1,4 linkage content, measured by carbon-13 nuclear magnetic resonance and/or medium-wave infrared radiation analysis, of greater than 99.0%. The process for the preparation of these synthetic polyisoprenes involve polymerizing, at a temperature of 0° C. or lower, isoprene in the presence of a catalytic system based on: a) a conjugated diene monomer, b) an organic phosphoric acid salt of one or more rare earth, c) an alkylaluminium alkylating agent of the formula AlR3 or HAlR2, and d) a halogen donor consisting of an alkylaluminium halide, wherein the salt is suspended in at least one inert, saturated aliphatic or alicyclic hydrocarbon solvent and the alkylating agent:rare earth salt molar ratio ranges from 1 to 5.Type: GrantFiled: May 12, 2003Date of Patent: January 31, 2006Assignee: Michelin Recherche et Technique S.A.Inventor: Philippe Laubry
-
Patent number: 6933354Abstract: Single-site catalyst systems useful for polymerizing olefins are disclosed. The catalyst systems comprise an organometallic complex and an activator. The complex includes a Group 3-10 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M. The activator is a reaction product of an alkylaluminum compound and an organoboronic acid. Catalyst systems of the invention significantly outperform known catalyst systems that employ a metallocene complex and similar aluminoboronate activators.Type: GrantFiled: March 23, 2004Date of Patent: August 23, 2005Assignee: Equistar Chemicals, LPInventors: Michael W. Lynch, Craig C. Meverden, Sandor Nagy, Karen L. Neal-Hawkins
-
Patent number: 6908972Abstract: A method for making ethylene polymers and copolymers is disclosed. The method uses a catalyst system comprising a low level of an aluminum-containing activator, a bridged indenoindolyl transition metal complex, and a treated silica support. The method enables economical preparation of ethylene copolymers having very low density. The silica-supported, bridged complexes incorporate comonomers efficiently and are valuable for a commercial slurry loop process. Use of a bridged indeno[2,1-b]indolyl complex provides exceptionally efficient comonomer incorporation, and gives polymers with a substantial and controlled level of long-chain branching. The method facilitates the production of a wide variety of polyolefins, from HDPE to plastomers.Type: GrantFiled: April 16, 2002Date of Patent: June 21, 2005Assignee: Equistar Chemicals, LPInventors: Barbara M. Tsuie, Karen L. Neal-Hawkins, Sandor Nagy, Michael W. Lynch, Mark P. Mack, Shaotian Wang, Jean A Merrick-Mack, Clifford C. Lee, Joel A. Mutchler, Kenneth W. Johnson
-
Patent number: 6906155Abstract: A propylenic polymer according to the present invention or a composition thereof have an excellent melt flowability and contains a less amount of stickiness-causing components, and also has a low modulus and is pliable, and is capable of providing a transparent molded article, thus being useful as a substitute for a pliable vinyl chloride resin. In addition, a molded article made therefrom exhibits an excellent heat seal performance at a low temperature, and is excellent in terms of transparency and rigidity. Specifically, it has an isotactic pentad fraction (mmmm), which indicates a stereoregulariry, of 30 to 80%, a molecular weight distribution (Mw/Mn) of 3.5 or less and an intrinsic viscosity [?] of 0.8 to 5 dl/g.Type: GrantFiled: June 25, 1999Date of Patent: June 14, 2005Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Yutaka Minami, Masato Kijima, Takuji Okamoto, Yasushi Seta, Yasuhiro Mogi, Tsuyoshi Ota, Hideo Funabashi, Takashi Kashiwamura, Noriyuki Tani
-
Patent number: 6903170Abstract: Ethylene and optional comonomers are polymerized using a supported metallocene catalyst, an alumoxane activator, and triisobutylaluminum (TIBAL). A silica support is first pretreated with a silane compound and then with an organoboron compound. The treated silica is then combined with a Group 4 metallocene complex and an alumoxane to generate a supported, activated catalyst. While it was previously thought that the particular support treatment technique used herein provided benefits only for polymerizations catalyzed by non-metallocene single-site complexes, it has now been found that similar benefits can be realized even with conventional metallocenes if TIBAL is selected as the scavenger.Type: GrantFiled: September 29, 2003Date of Patent: June 7, 2005Assignee: Equistar Chemicals, LPInventor: Shaotian Wang
-
Patent number: 6887956Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.Type: GrantFiled: October 2, 2001Date of Patent: May 3, 2005Assignee: Dow Global Technologies Inc.Inventors: Adriaan A. van der Huizen, Jean-Marc Potlet, Alain Sabatier, Patrick Le Roy
-
Patent number: 6870017Abstract: A catalyst for addition polymerization obtained by bringing the following (A) into contact with (B) a specific organic aluminum compound and/or aluminoxane, and (C) a specific boron compound, and a process for producing an addition polymer with the same.Type: GrantFiled: March 14, 2003Date of Patent: March 22, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Masaaki Nabika, Tatsuya Miyatake
-
Patent number: 6867276Abstract: A process for preparing syndiotactic polymers of vinylaromatic monomers having improved melt flowability comprising contacting one or more vinylaromatic monomers with a catalyst system comprising a titanium coordination complex capable of preparing syndiotactic vinylaromatic polymers under addition polymerization conditions in the presence of hydrogen gas at a hydrogen partial pressure from 0.1 to less than 10 kPa.Type: GrantFiled: December 18, 2002Date of Patent: March 15, 2005Assignee: Dow Global Technologies Inv.Inventor: Jürgen Schellenberg
-
Patent number: 6858686Abstract: The present invention relates to a process for obtaining a polyisoprene having a high cis-1,4 linkage content, from a steam-cracked C5 naphtha fraction enriched with isoprene. The process of the present invention comprises reacting a steam-cracked C5 naphtha fraction in the presence of a catalytic system, wherein the C5 fraction is enriched with isoprene such that the mass fraction of isoprene in said enriched fraction lies within a range of from 30% to 95%, and the catalytic system is based on at least (a) a conjugated diene monomer, (b) an organic phosphoric acid salt of one or more rare earth metals, (c) an alkylating agent consisting of an alkylaluminum of the formula AlR3 or HAlR2, and (d) a halogen donor consisting of an alkylaluminum halide, said salt being suspended in at least one inert saturated hydrocarbon solvent of aliphatic or alicyclic type which is included in said catalytic system, and the molar ratio of alkylating agent:rare earth salt is in a range of from 1 to 5.Type: GrantFiled: June 4, 2003Date of Patent: February 22, 2005Assignee: Michelin Recherche et Technique S.A.Inventor: Philippe Laubry
-
Patent number: 6838534Abstract: The present invention provides a catalytic system that can be used to prepare by polymerization diene elastomers comprising polyisoprenes and polybutadienes. The invention also provides a process for the preparation of the catalytic system and to a process using the catalytic system to prepare diene elastomers comprising polyisoprenes having a high cis-1,4 linkage content and polybutadienes. The catalytic system according to the invention is based on (a) a conjugated diene monomer, (b) an organic phosphoric acid salt of a rare earth metal, (c) an alkylating agent consisting of an alkylaluminium of the formula AlR3 or HAlR2, and (d) a halogen donor consisting of an alkylaluminium halide, and is such that said salt is suspended in at least one inert and saturated aliphatic or alicyclic hydrocarbon solvent and, the “alkylating agent:rare earth salt” molar ratio ranges from 1 to 5.Type: GrantFiled: May 9, 2003Date of Patent: January 4, 2005Assignee: Michelin Recherche et Technique S.A.Inventor: Philippe Laubry
-
Publication number: 20040266962Abstract: It has been discovered that using di-sec-butyldialkoxysilanes, such as di-sec-butyldimethoxysilane (DSBDMS), as external electron donors for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties and processing. The catalyst systems of the invention provide high activity, high bulk density, moderate hydrogen response, moderate donor response and high polydispersity (MWD). Suitable di-sec-butyldialkoxysilanes have the formula (SBu)2Si(OR″)2, where R″ is independently a straight or branched alkyl group of 1-5 carbon atoms.Type: ApplicationFiled: December 1, 2003Publication date: December 30, 2004Inventor: Joseph Thorman
-
Publication number: 20040254314Abstract: A catalyst for olefin polymerization, comprising:Type: ApplicationFiled: April 16, 2004Publication date: December 16, 2004Inventors: Takashi Nozaki, Akio Fujiwara
-
Publication number: 20040248729Abstract: The present invention provides a high-activity solid main catalyst component for ethylene polymerization, a process for preparing the same and a catalyst containing the same. The main catalyst component consists essentially of a magnesium compound, a titanium compound, an electron donor, an alkyl aluminum compound and fumed silica, and is prepared by a process comprising the step of: reacting powdered magnesium with an alkyl halide to form a magnesium compound in the nascent state; adding the magnesium compound in the nascent state together with a titanium compound and an alkyl aluminum compound into an electron donor to form a complex; adding and well dispersing a fumed silica thereto to form a homogeneous thick mixture; molding and drying the mixture to form main catalyst component particles with good particle morphology; and optionally, dispersing the main catalyst component particles into a hydrocarbon solvent or a mineral oil to form a slurry.Type: ApplicationFiled: April 28, 2004Publication date: December 9, 2004Inventors: Mingwei Xiao, Shijiong Yu, Xiaofeng Ye
-
Patent number: 6825294Abstract: Provided are catalysts for styrene polymerization capable of efficiently and inexpensively producing styrenic polymers having a syndiotactic structure; and a method for producing styrenic polymers. The catalysts comprise (A) a transition metal compound, (B) an oxygen-containing compound and/or a compound capable of reacting with a transition metal compound to form an ionic complex, (C) a specific metal compound, preferably a specific organoaluminium compound of a general formula: ((R1)3—CO)n-Al—(R2)3−n wherein R1 represents an aliphatic hydrocarbon group having from 1 to 30 carbon atoms, an aromatic hydrocarbon group having from 6 to 30 carbon atoms or the like; R2 represents a hydrocarbon group; n is 1 or 2, and optionally (D) an alkylating agent. In the method for producing styrenic polymers, used is the catalyst.Type: GrantFiled: September 28, 2000Date of Patent: November 30, 2004Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Nobuhiro Yabunouchi, Norio Tomotsu
-
Patent number: 6803430Abstract: The present invention relates to a process for polymerizing olefin(s) in the presence of metallocene-type catalyst compound, an activator and an inorganic oxide support, a Group 13 containing compound and a carboxylic acid, where the carboxylic acid is added to the polymerization reactor separately. The invention also relates to a process for transitioning from one polymerization catalyst to another.Type: GrantFiled: March 13, 2002Date of Patent: October 12, 2004Assignee: Univation Technologies, LLCInventors: Agapios K. Agapiou, Chi-I Kuo
-
Patent number: 6790917Abstract: A process for producing a polymer, which comprises polymerizing a vinyl compound (I) represented by the general formula CH2═CH—R, wherein steric parameters Es and B1 of the substituent R are respectively −1.64 or less and 1.53 or more, or a vinyl compound (II) represented by the general formula CH2═CH—R′, wherein a substituent R′ is a secondary or tertiary alkyl group, in the presence of a catalyst obtained by combining: (A) a transition metal compound represented by the general formula [1] (B) an organoaluminum compound and (C) a boron compound.Type: GrantFiled: May 21, 2002Date of Patent: September 14, 2004Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuo Oi
-
Patent number: 6787617Abstract: A process for preparing olefinic living polymers having a molecular weight distribution (Mw/Mn) of 1 to 1.3, comprising polymerizing an olefinic monomer having 2 to 20 carbon atoms at low temperatures in the presence of a catalyst comprising (A) a hafnium or zirconium-containing compound having one or two cyclopentadienyl backbones, (B) a triphenyl boron compound or a tetraphenyl borate compound and optionally (C) a specific mono-, di- or trialkylaluminum compound. When the catalyst comprising the zirconium-containing compound is prepared by further using a titanium-containing compound (D), the polymerization temperature can be raised.Type: GrantFiled: November 8, 2001Date of Patent: September 7, 2004Assignees: Japan as represented by Director General of the Agency of Industrial Science and Technology, Japan Chemical Innovation InstituteInventors: Kazuo Soga, Takeshi Shiono, Michihiko Asai, Yasuzo Suzuki, Akira Miyazawa, Kenji Tsuchihara, Masahide Murata, Hiroyuki Ozaki, Masanao Kawabe, Toshio Kase, Jizhu Jin, Hideaki Hagiwara, Yoshifumi Fukui
-
Patent number: 6777509Abstract: A solution polymerization process using a phosphinimine catalyst and a boron activator is conducted at a temperature of about 170° C. or greater in the presence of trialkyl aluminum to produce polyethylene having a comparatively broad molecular weight distribution. The polyethylene product produced by the process of this invention is desirable because it can provide enhanced “processability” in comparison to polyethylene having a narrow molecular weight distribution. The process of this invention is advantageous in comparison to prior art processes for the preparation of “broad” polyethylene which use two polymerization reactors and/or more than one polymerization catalyst. The polymers produced by the process of this invention are potentially suitable for the preparation of plastic film. For example, a polyethylene according to this invention and having a density of about 0.Type: GrantFiled: April 17, 2002Date of Patent: August 17, 2004Assignee: Nova Chemicals (International) S.AInventors: Stephen John Brown, John William Swabey, Christopher John Brooke Dobbin
-
Patent number: 6774194Abstract: Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.Type: GrantFiled: June 26, 2002Date of Patent: August 10, 2004Assignee: Basell Technology Company BVInventors: Enrico Albizzati, Tiziano Dall'Occo, Luigi Resconi, Fabrizio Piemontesi
-
Patent number: 6765074Abstract: An olefin polymerization process is disclosed. The process comprises polymerizing olefins in the presence of a supported indenoindolyl catalyst system and an organoboron or organoaluminum-treated solid. The supported indenoindolyl catalyst system comprises a support, an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is &pgr;-bonded to M, and an activator. Performing the process in the presence of the organoboron or organoaluminum-treated solid surprisingly leads to an increased activity compared to polymerization processes performed without the treated solid.Type: GrantFiled: September 27, 2002Date of Patent: July 20, 2004Assignee: Equistar Chemicals, LPInventor: William J. Sartain
-
Patent number: 6762255Abstract: Prealkylation of a supported catalyst system comprising a transition metal or inner transition metal complex precatalyst and a bulky, non-coordinating anion on an inorganic support by treatment with a solution of metal alkyl in a ratio of metal of metal alkyl to transition metal or inner transition metal of precatalyst less than 20:1, and in an amount of solution insufficient to form a paste or dispersion provides supported catalysts of high olefin polymerization activity which promote production of polyolefins of low polydispersity and improved morphology.Type: GrantFiled: June 6, 2002Date of Patent: July 13, 2004Assignee: Equistar Chemicals L.P.Inventors: Craig C. Meverden, Michael W. Lynch
-
Publication number: 20040122192Abstract: The present invention is a polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith. A process for preparing the copolymer, a thermoplastic resin composition containing the copolymer, and uses thereof are also described. The polar group-containing olefin copolymer comprises a constituent unit derived from an &agr;-olefin of 2 to 20 carbon atoms, and a constituent unit derived from a straight-chain, branched or cyclic polar group-containing monomer having at the end a polar group such as a hydroxyl group or an epoxy group and/or a constituent unit derived from a macromonomer having at the end a polymer segment obtained by anionic polymerization, ring-opening polymerization or polycondensation.Type: ApplicationFiled: November 17, 2003Publication date: June 24, 2004Applicant: Mitsui Chemicals, Inc.Inventors: Junichi Imuta, Norio Kashiwa, Seiji Ota, Satoru Moriya, Tadahito Nobori, Kazumi Mizutani
-
Patent number: 6730755Abstract: A supported catalyst for olefin polymerization comprises a combination of a novel metal oxide support and an activator which is an aluminoxane or a boron activator. The novel metal oxide support of this invention is a conventional particulate metal oxide support material (such as silica or alumina) which has been treated with a halosulfonic acid. A catalyst system which contains this novel catalyst support and a transition metal catalyst is highly active for olefin polymerization (in comparison to prior art catalyst systems which use a conventional metal oxide support).Type: GrantFiled: February 7, 2002Date of Patent: May 4, 2004Assignee: Nova Chemicals (Internation) S.AInventors: Xiaoliang Gao, P. Scott Chisholm, Matthew Gerald Kowalchuk, Robert D. Donaldson
-
Patent number: 6720394Abstract: Alumoxanes having C2-C12 alkyl groups can conveniently be used in supported olefin polymerization catalyst compositions prepared by contacting, either previous to or immediately before the beginning of the olefin polymerization, a support comprising a porous carrier with (a) an organometallic compound of the general formula R1MXv−1, (b) a metallocene of the general formula (CpY)mM′X′nZo and an alumoxane of the following general formula in any order.Type: GrantFiled: January 22, 2001Date of Patent: April 13, 2004Assignee: Borealis Technology OyInventors: Kalle Kallio, Marja Mustonen, Hilkka Knuuttila
-
Patent number: 6716940Abstract: Catalyst system for the polymerization of olefins CH2═CHR, wherein R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, comprising the product of the reaction between (a) a solid catalyst component comprising Mg, Ti, and halogen, (b) dimethylaluminium chloride (DMAC) and (c) an alkylaluinium compound, in which the molar ratio between (b) and (c) is lower than 10. This kind of catalyst system is particularly suitable for the preparation of copolymers of ethylene with &agr;-olefins due to its high capacity for incorporating the comonomer while at the same time maintaining high yields.Type: GrantFiled: February 28, 2002Date of Patent: April 6, 2004Assignee: Basell Polyolefine GmbHInventors: Tiziano Dall'Occo, Giovanni Baruzzi, Diego Brita, Mario Sacchetti
-
Publication number: 20040029722Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.Type: ApplicationFiled: April 11, 2003Publication date: February 12, 2004Inventors: Adriaan A. van der Huizen, Jean-Marc Potlet, Alain Sabatier, Patrick Le Roy
-
Publication number: 20040030064Abstract: The present invention provides a catalyst component used for homopolymerization or co-polymerization of ethylene, comprising at least one suitable electron donor compound supported on a composition containing magnesium and titanium, wherein the electron donor compound is selected from the group consisting of aliphatic ethers, alicyclic ethers, aromatic ethers, aliphatic ketones and alicyclic ketones, and wherein the composition containing magnesium and titanium is prepared by dissolving a magnesium compound into a solvent system to form a homogeneous solution and then contacting the solution with a titanium compound in the presence of a precipitation aid to precipitate the composition. The present invention also relates to a method for the preparation of said catalyst component and a catalyst comprising thereof, and to use of the catalyst in homopolymerization of ethylene or co-polymerization of ethylene with at least one C3-C8 &agr;-olefln.Type: ApplicationFiled: June 5, 2003Publication date: February 12, 2004Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRYInventors: Zhiwu Wang, Zhong Tan, Tianyi Li, Xingbo Li, Kai Zhang, Peng Kou, Haixiang Cui, Zhengyang Guo, Liang Pan
-
Publication number: 20040009870Abstract: The present invention provides a catalytic system that can be used to prepare by polymerization diene elastomers comprising polyisoprenes and polybutadienes. The invention also provides a process for the preparation of the catalytic system and to a process using the catalytic system to prepare diene elastomers comprising polyisoprenes having a high cis-1,4 linkage content and polybutadienes. The catalytic system according to the invention is based on (a) a conjugated diene monomer, (b) an organic phosphoric acid salt of a rare earth metal, (c) an alkylating agent consisting of an alkylaluminium of the formula AlR3 or HAlR2, and (d) a halogen donor consisting of an alkylaluminium halide, and is such that said salt is suspended in at least one inert and saturated aliphatic or alicyclic hydrocarbon solvent and, the “alkylating agent:rare earth salt” molar ratio ranges from 1 to 5.Type: ApplicationFiled: May 9, 2003Publication date: January 15, 2004Inventor: Philippe Laubry
-
Publication number: 20030228971Abstract: Prealkylation of a supported catalyst system comprising a transition metal or inner transition metal complex precatalyst and a bulky, non-coordinating anion on an inorganic support by treatment with a solution of metal alkyl in a ratio of metal of metal alkyl to transition metal or inner transition metal of precatalyst less than 20:1, and in an amount of solution insufficient to form a paste or dispersion provides supported catalysts of high olefin polymerization activity which promote production of polyolefins of low polydispersity and improved morphology.Type: ApplicationFiled: June 6, 2002Publication date: December 11, 2003Applicant: EQUISTAR CHEMICALS L.P.Inventors: Craig C. Meverden, Michael W. Lynch
-
Patent number: 6653430Abstract: A butadiene polymer (i) having a cis bond unit content of at least 50% based on the total butadiene units, a number average molecular weight (Mn) of 1,000 to 10,000,000, and at least 80%, based on the total molecular chains, of living chains containing a transition metal of group IV of the Periodic table at a terminal thereof; a polymer (ii) obtained by modifying terminals of the polymer (i); and a polymer (iii) obtained by coupling the polymers (i). These polymers (i), (ii) and (iii) are obtained by polymerizing a conjugated diene monomer alone or with a copolymerizable monomer at a specific temperature in the presence of a catalyst comprising a compound (A) of a transition metal of group IV of the periodic table having a cyclopentadienyl structure and a co-catalyst (B) selected from organoaluminum-oxy compound (a) and others and optionally further by contacting the resultant polymer with a terminal modifier or a coupling agent.Type: GrantFiled: June 18, 2001Date of Patent: November 25, 2003Assignees: Japan as Represented by Director General of the Agency of Industrial Science and Technology, Japan Chemical Innovation InstituteInventors: Kazuo Soga, Michihiko Asai, Yasuzo Suzuki, Akira Miyazawa, Kenji Tsuchihara, Masahide Murata, Hiroyuki Ozaki, Masanao Kawabe, Yoshifumi Fukui, Jizhy Jin, Hideaki Hagihara, Toshio Kase
-
Publication number: 20030212220Abstract: The present invention relates to a process for obtaining a polyisoprene having a high cis-1,4 linkage content, from a steam-cracked C5 naphtha fraction enriched with isoprene. The process of the present invention comprises reacting a steam-cracked C5 naphtha fraction in the presence of a catalytic system, wherein the C5 fraction is enriched with isoprene such that the mass fraction of isoprene in said enriched fraction lies within a range of from 30% to 95%, and the catalytic system is based on at least (a) a conjugated diene monomer, (b) an organic phosphoric acid salt of one or more rare earth metals, (c) an alkylating agent consisting of an alkylaluminum of the formula AlR3 or HAlR2, and (d) a halogen donor consisting of an alkylaluminum halide, said salt being suspended in at least one inert saturated hydrocarbon solvent of aliphatic or alicyclic type which is included in said catalytic system, and the molar ratio of alkylating agent: rare earth salt is in a range of from 1 to 5.Type: ApplicationFiled: June 4, 2003Publication date: November 13, 2003Inventor: Philippe Laubry
-
Publication number: 20030208011Abstract: The invention relates to an improved olefin catalyst, a method of in situ-activated catalyst preparation and a process for the polymerization of olefinic monomers via, for example, a titanium trichloride/magnesium dichloride/tetrahydrofuran reaction product catalyst precursor. The activated catalyst is prepared in situ in a polymerization reactor using an alumoxane based co-catalyst wherein the cumbersome traditional steps of catalyst activation and isolation, prior to polymerization are eliminated. An unexpected advantage of this invention is a significant increase in catalyst productivity while maintaining a relatively constant value of the bulk density of polymeric materials produced while concomitantly producing a polymeric product having a broad molecular weight distribution compared with typical alumoxane-activated metallocene catalysts.Type: ApplicationFiled: April 17, 2003Publication date: November 6, 2003Applicant: Saudi Basic Industries CorporationInventors: Atieh Abu-Raqabah, Abdul Wahab Al-Sadoun, Navin Nallaveerapan
-
Patent number: 6639030Abstract: A process for production of an olefin polymer is provided which comprises polymerization of ethylene and/or &agr;-olefin of three of more carbons at a polymerization temperature of not lower than 120° C. with a catalyst comprising a specific metallocene compound having a substituted fluorenyl group, and a compound which reacts with the metallocene compound to form a cationic metallocene compound. The olefin polymer or copolymer produced by the process has narrow composition distribution, narrow molecular weight distribution, and a high molecular weight.Type: GrantFiled: October 19, 1995Date of Patent: October 28, 2003Assignee: Tosoh CorporationInventors: Makoto Sone, Saiki Hasegawa, Satoru Yamada, Akihiro Yano
-
Publication number: 20030195307Abstract: An olefin polymerization catalyst is provided which makes use of a modified methylaluminoxane and thus stably exhibits an activity equivalent to, or higher than, the activity achieved by polymethylaluminoxane.Type: ApplicationFiled: April 8, 2003Publication date: October 16, 2003Inventors: Eiichi Kaji, Kouji Toyota, Toshihiro Takasugi, Hideki Kanazawa
-
Publication number: 20030176275Abstract: Catalyst solid for olefin polymerization comprisingType: ApplicationFiled: December 12, 2002Publication date: September 18, 2003Inventors: Volker Fraaije, Markus Oberhoff, Nicola (Hugsen) Paczkowski, Markus Schopf, Wolfgang Bidell, Joachim Wulff-Doring, Shahram Mihan
-
Patent number: 6617405Abstract: A process of polymerizing ethylene or ethylene and one or more comonomers in one or more fluidized bed reactors with a catalyst system comprising (i) a supported or unsupported magnesium/titanium based precursor in slurry form, said precursor containing an electron donor; and (ii) an activator containing aluminum in an amount sufficient to essentially complete the activation of the precursor is disclosed. In the process, the precursor and the activator are mixed prior to introduction into the reactor in at least one mixing procedure, and then the mixture is contacted again with additional activator to essentially complete activation of the precursor. In the method, the atomic ratio of aluminum to titanium is in the range of about 1:1 to about 15:1 and the mole ratio of activator to electron donor is about 1:1 to about 2:1, and no additional activator is introduced into the reactor(s).Type: GrantFiled: July 14, 1999Date of Patent: September 9, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Robert James Jorgensen
-
Publication number: 20030162919Abstract: Process for polymerising alpha-olefins in which at least one alpha-olefin is placed in contact, in polymerising conditions, with a catalytic system comprising at least one catalytic complex (a) based on a metal (M) of groups 6 to 12 of the Periodic Table, at least one trialkylaluminium (b) corresponding to the general formula AIR3, in which each R represents, independently, a linear alkyl group containing from 1 to 30 carbon atoms, at least one trialkylaluminium (c) corresponding to the general formula AIR′3, in which each R′ represents, independently, a branched alkyl group containing from 3 to 30 carbon atoms, such that the molar ratio of trialkylaluminium (c) to trialkylaluminium (b) is at least 2.Type: ApplicationFiled: February 4, 2003Publication date: August 28, 2003Inventors: Henri Cramail, Alain Deffieux, Philippe Jean Paul Emile Francois, Karunakaran Radhakrishnan
-
Patent number: 6605676Abstract: The process is characterized by the use of catalyst systems consisting of a single metallocene catalyst activated with mixtures of at least 2 co-catalysts. The co-catalysts are aluminium alkyls, aluminoxanes or boron compounds. Different active centers are produced in the catalyst through the use of these mixed co-catalyst systems, each having different rates of initiation and completion of the polymerization reaction, which give rise to polyolefins with different molecular weights, resulting in products with broad bimodal or multimodal molecular weight distributions and the incorporation of co-monomer can be controlled by appropriate selection of the metallocene and use of combinations of different types of co-catalysts, as well as by varying the reactor pressure, the reaction temperature and the molar ratios between the various components of the catalyst system.Type: GrantFiled: December 28, 1995Date of Patent: August 12, 2003Assignee: Repsol Quimica, S.A.Inventors: Wilfried Michiels Vega, Antonio Munoz-Escalona