Two Or More Group Iiia Metals In Elemental Form Or Bonded To Hydrogen Or Carbon Atom Patents (Class 526/153)
  • Patent number: 6288183
    Abstract: A catalyst composition that is the combination of or the reaction product of ingredients including an iron-containing compound, a hydrogen phosphite, and a mixture of two or more organoaluminum compounds. This catalyst composition is particularly useful for polymerizing conjugated dienes. When this catalyst composition is used to polymerize 1,3-butadiene into syndiotactic 1,2-polybutadiene the ratio of the organoaluminum compounds can be adjusted to vary the melting temperature and molecular weight of the polymer product.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: September 11, 2001
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Patent number: 6284857
    Abstract: Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous propylene units wherein directions of &agr;-methyl carbons are the same as each other), and a process for preparing said polymer. Further disclosed is a propylene polymer composition comprising the above propylene polymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene polymer of the invention is excellent in rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 4, 2001
    Assignee: Mitsui Chemical, Inc.
    Inventors: Tetsunori Shinozaki, Kazumitsu Kawakita, Mamoru Kioka
  • Patent number: 6277934
    Abstract: An organic aluminoxy compound which shows 27Al nuclear magnetic resonance spectrum (27Al-NMR spectrum) having an A1/A2 ratio of at most 0.1, wherein A1 is area of a region encompassed by a segment of a line which connects a local minimum point existing between a continuous curve “a” containing a peak appearing at around 150 ppm and a continuous curve “b” containing a peak appearing at around 60 ppm to the point where the above curve “b” comes into contact with the base line and also by the above curve “b” and A2 is area of a region encompassed by the above curves “a” and “b” and also by the base line; an organic aluminoxy compound containing at least 5%, expressed in terms of aluminum atom, of a portion insoluble in a mixed solvent of toluene and hexane in a ratio by volume of 2:5 at 30° C. or lower; and a catalyst for producing a polymer comprising any of the above organic aluminoxy compounds and a transition metal compound.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: August 21, 2001
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Tsuyoshi Kondoh, Shoji Naganuma, Norio Tomotsu
  • Patent number: 6255420
    Abstract: A process for starting a polymerization of butadiene to produce polybutadiene in a gas phase reactor having a seed bed which comprises (i) passivating the reactor and the seed bed by introducing an aluminum alkyl having a concentration ranging from about 2,000 to 20,000 ppm and (ii) feeding the catalyst and co-catalyst to the reactor before the addition of the butadiene.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: July 3, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Albert George Dietz, III, Daniel Paul Zilker, Kiu Hee Lee
  • Patent number: 6255416
    Abstract: A conjugated diene polymer is obtained by using a specified catalyst system consisting of components (a)-(d) and indicating a high polymerization activity to a conjugated diene compound. Further, a modified conjugated diene polymer is obtained by reacting with at least one specified compound selected from the group consisting of components (e)-(j).
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: July 3, 2001
    Assignee: JSR Corporation
    Inventors: Takuo Sone, Katsutoshi Nonaka, Akio Takashima, Iwakazu Hattori
  • Patent number: 6235855
    Abstract: A transition metal compound of the following formula (1) as catalyst component for the production of an aromatic vinyl compound polymer or an aromatic vinyl compound-olefin copolymer: wherein A is a specified unsubstituted or substituted benzindenyl group, and B, M, Y, and X are as specified.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: May 22, 2001
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toru Arai, Toshiaki Otsu, Shigeru Suzuki
  • Patent number: 6232255
    Abstract: A catalyst system for the polymerization of olefins which includes a solid catalyst component and a cocatalyst. The solid catalyst component includes the contact product of silica, an alkyl magnesium-containing species, a compound having the structural formula E(YZ)mX4-m, where E is an atom of an element of Group 14 of the Periodic Table of the Elements; Y is an atom of an element of Group 16 of the Periodic Table of the Elements; Z is hydrogen, hydrocarbyl or mixtures thereof; X is hydrogen, halogen, hydrocarbyl or mixtures thereof; and m is an integer of 1 to 4 and a tetravalent titanium compound. The cocatalyst includes a mixture of at least two compounds having the structural formula AlRxX13-x, where R is the same or different and is hydrocarbyl; X1 is halogen; and x is an integer of 1 to 3 with the proviso that at least one of the compounds is defined by x being 3 and at least one of the compounds as defined by x being 1 or 2.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: May 15, 2001
    Assignee: Equistar Chemicals, LP
    Inventors: Linda N. Winslow, Garry L. Fields, Kenneth W. Johnson
  • Patent number: 6225427
    Abstract: A polyolefin elastomer possessing a unique combination of properties, i.e., high molecular weight (Mw), high Mooney viscosity (ML1+4 at 125° C.), low polydispersity index (Mw/Mn) and low glass transition temperature (Tg), is obtained by a polymerization process employing a particular type of a metallocene catalyst. The polyolefin elastomer is useful for manufacturing a variety of products including rubber articles such as hoses, belts and moldings, polymer blends containing one or more other hydrocarbon polymers and lubricating oils in which the elastomer functions as a viscosity modifier. Also disclosed is a cocatalyst for activating the metallocene procatalyst employing a specific molar ratio of the components of the cocatalyst to the transition metal of the procatalyst.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: May 1, 2001
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Willie C. Burton, Xu Wu Feng, Daniel Gillis
  • Patent number: 6221992
    Abstract: Amorphous copolymers of ethylene with propylene, and optionally with minor amounts of polyenes, have the following characteristics: (A) the % content by mole of propylene in the copolymer (%P) and the triads ratio EPE/(EPE+PPE+PPP) satisfy the following relationship: 0.01%P+EPE/(EPE+PPE+PPP)≧1 (B) less than 2% of the CH2 groups in the chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtainable by operating in the presence of particular metallocene catalysts having two fluorenyl groups joined together through a bridging group.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: April 24, 2001
    Assignee: Montell Technology Company bv
    Inventors: Maurizio Galimberti, Luigi Resconi, Enrico Albizzati
  • Patent number: 6221986
    Abstract: A process for producing light alpha olefins by ethylene oligomerisation in contact with a catalyst produced by mixing a zirconium compound with an organic compound selected from the group formed by acetals and ketals, with an aluminum hydrocarbyl compound selected from the group formed by chlorine-containing or bromine-containing aluminum hydrocarbyl compounds and with an aluminum hydrocarbyl compound selected from tris-(hydrocarbyl)-aluminum compounds.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: April 24, 2001
    Assignee: Institut Francais du Petrole
    Inventors: Dominique Commereuc, Serge Boivineau, François Hugues, Lucien Saussine
  • Patent number: 6214946
    Abstract: There is provided a process for the gas phase production of an ethylene-propylene or ethylene-propylene-diene rubber in the presence of a single site or single-site like catalyst (e.g., metallocene) catalyst system and an inert particulate material comprising pretreating the inert particulate material with trialkylaluminum (e.g., tri-isobutylaluminum) before commencing polymerization.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: April 10, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Xinlai Bai
  • Patent number: 6211110
    Abstract: A “bridged” bis-cyclopentadienyl complex which can be advantageously used for the formation of a catalytic system active in the (co)polymerization of ethylene and other &agr;-olefins is represented by means of the following formula (II): wherein: M represents a metal selected from titanium, zirconium or hafnium; A′ and A″ each independently represent an anion containing an &eegr;5-cyclopentadienyl ring coordinated to M; R′ or R″ each independently represents a group of an anionic nature a-bound to the metal M; B represents an unsaturated bivalent organic residue having from 1 to 30 carbon atoms, bound, respectively, to the ring of group A′ and to the —CH2— methylene group by means of carbon atoms.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: April 3, 2001
    Assignee: Enichem S.p.A.
    Inventors: Roberto Santi, Giampietro Borsotti, Gianfranco Longhini, Paolo Biagini, Antonio Proto, Francesco Masi, Viviano Banzi
  • Patent number: 6197899
    Abstract: A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: March 6, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Kent E. Mitchell, Max P. McDaniel, M. Bruce Welch, Elizabeth A. Benham, Grover W. Cone
  • Patent number: 6191240
    Abstract: Catalysts for the polymerization of olefins comprise the product of the reaction between: (A) a titanium, zirconium or hafnium product with substituted cyclopentadiene ligands, (B) a mixture of two organometallic aluminium compounds, with at least one of the groups bound to the aluminium being other than a linear alkyl, and (C) water. When used in the polymerization of olefins, these catalysts show higher activities, at short residence times, than corresponding catalysts obtained from the individual components of the above-mentioned mixtures of aluminium compounds.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: February 20, 2001
    Assignee: Montell Technology Company B.V.
    Inventor: Maurizio Galimberti
  • Patent number: 6187882
    Abstract: The invention relates to a process for the polymerization of olefins, which comprises polymerizing an olefin or mixture thereof in presence of a solvent, a supported metallocene and an aluminoxane as cocatalyst in a hydrocarbon medium, at a temperature in the range of 50 to 150° C., at a pressure ranging between 1 to 20 bar, for a period of 10 minutes to 10 hours, scavenging the reaction mixture by addition of an organoaluminum compound to remove the last traces of impurities of solvent, separating the polymer by conventional methods like precipitating, filtering, washing the polymer with an organic solvent, drying the polymer to remove the solvent to obtain the product.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: February 13, 2001
    Assignee: Council of Scientific & Industrial Research
    Inventors: Soumen Sensarma, Swaminathan Sivaram
  • Patent number: 6180733
    Abstract: Metallocene compounds having two fluorenyl ligands bridged with a single silicon or germanium atom, said atom having two substituent groups containing a total of at least four carbon atoms, are useful as catalyst components for the polymerization of olefins. Particularly, it is possible to prepare high molecular weight atactic polypropylene with improved yields with respect to the known catalysts.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: January 30, 2001
    Assignee: Montell Technology Company bv
    Inventors: Luigi Resconi, Robert L. Jones
  • Patent number: 6174973
    Abstract: Process for the preparation of crystalline vinylaromatic polymers with a high degree of syndiotaxy which comprises polymerizing vinylaromatic monomers in the presence of a catalytic system essentially consisting of: a) a complex of titanium having the general formula: CpTiX1X2X3  (I) wherein Cp represents a cyclopentadienyl ligand whereas X1, X2, X3, the same or different, are selected from a halogen such as chlorine, or from alkyl groups, alkoxides, carboxylates, di(alkyl)amides; b) a polyalkylaluminoxane wherein the alkyl group contains from 1 to 8 carbon atoms; c) aluminum trifluoride.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: January 16, 2001
    Assignee: Enichem S.p.A.
    Inventors: Riccardo Po', Luigi Abbondanza
  • Patent number: 6162871
    Abstract: A polyolefin resin composition containing an ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (wt %) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I):d-0.008.times.logMFR.gtoreq.0.93 (I)the orthodichlorobenzene-soluble content X satisfies relationship (II):X<2.0 (II)(ii) when the density d and the melt flow rate MFR satisfy relationship (III):d-0.008.times.logMFR<0.93 (III)the orthodichlorobenzene-soluble content X satisfies relationship (IV):X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: December 19, 2000
    Assignee: Nippon Petrochemical Co., Ltd.
    Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
  • Patent number: 6160071
    Abstract: Amorphous copolymers of ethylene with .alpha.-olefins and optionally minor amounts of polyenes are disclosed, having the following characteristics:(A) the % by mole content of .alpha.-olefin in the copolymer (%.alpha.) and the ratio between the molar amount of .alpha.-olefin diads and the molar content of .alpha.-olefin in the copolymer (.alpha..alpha./.alpha.) satisfy the following relationship:(%.alpha.)-250(.alpha..alpha./.alpha.).gtoreq.10(B) less than 2% of the CH.sub.2 groups in the polymeric chain are in sequences (CH.sub.2).sub.n, wherein n is an even number.These copolymers are obtainable by operating in the presence of particular metallocene-based catalysts having two fluorenyl groups joined together through a bridging group.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: December 12, 2000
    Assignee: Montell Technology Company bv
    Inventors: Maurizio Galimberti, Luigi Resconi, Enrico Albizzati
  • Patent number: 6136747
    Abstract: A mixed catalyst composition comprising a) a solid Ziegler-Natta catalyst; b) a liquid single site catalyst; and c) at least one activating cocatalyst is provided. Polymers having a broad or bimodal molecular weight distribution may be made with this catalyst composition.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: October 24, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Sun-Chueh Kao, Frederick John Karol, Paul Theodore Daniell, Gregory Mark Goode
  • Patent number: 6130301
    Abstract: A method for producing a polyolefin, which comprises polymerizing or copolymerizing at least one olefin in the presence of a catalyst system comprising (A) a solid catalyst component of a titanium catalyst component obtained by reacting at least one aluminum halide compound with a homogeneous solution containing magnesium, titanium and alkoxy groups, wherein the aluminum halide compound is added to the homogeneous solution to provide a halogen atom in a mol ratio of from 0.2 to 0.4 to one mol of the alkoxy groups contained in the homogeneous solution to precipitate particles in the former step, and the aluminum halide compound is further added to provide a halogen atom in a mol ratio of from 1 to 20 to one mol of the alkoxy groups to treat the resultant mixture containing the precipitated particles in the latter step, and (B) at least one organic aluminum compound catalyst component.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: October 10, 2000
    Assignee: Tosoh Corporation
    Inventors: Sadaki Nishimura, Hideyuki Takitani, Yutaka Naito, Mitsuhiro Mori
  • Patent number: 6127496
    Abstract: A catalyst system containing as active constituentsA) metal complexes of the formula I ##STR1## wherein the substituents have the meanings set forth in the specification andB) a compound capable of forming metallocenium ions.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: October 3, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Geprags, Rainer Sturmer, Horst Weiss, Susanne Steiger
  • Patent number: 6127495
    Abstract: Polymers of C.sub.2 -C.sub.12 -alkenes are prepared at from -50 to 300.degree. C. and from 0.5 to 3000 bar in the presence of a catalyst system by a process in which a compound of the general formula I ##STR1## where M.sup.1 is boron, aluminum, gallium, indium or thallium andR.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl or arylalkyl each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical, or 5- to 7-membered cycloalkyl which in turn may carry C.sub.1 -C.sub.10 -alkyl as a substituent, or R.sup.1 and R.sup.2 together form a cyclic group, is added of 4 to 15 carbon atoms.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 3, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Rosch, Wolfgang Bidell, Franz Langhauser
  • Patent number: 6121396
    Abstract: A catalyst for polymerization of an olefin is provided which comprises a metallocene compound having a specified substituted fluorenyl group, and a compound capable of reacting the metallocene compound to form a cationic metallocene compound. With this compound, a high-molecular olefin polymer having narrow composition distribution and narrow molecular-weight distribution can be obtained at a polymerization temperature of not lower than 120.degree. C.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: September 19, 2000
    Assignee: Tosoh Corporation
    Inventors: Makoto Sone, Saiki Hasegawa, Satoru Yamada, Akihiro Yano
  • Patent number: 6121391
    Abstract: Polymers of vinylaromatic compounds are prepared at from -80 to 150.degree. C. in the presence of metallocene catalyst systems by a process in which polymerization is carried out in one stage with the use of a closely intermeshing twin-screw extruder having corotating screws.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: September 19, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Josef Wunsch, Jurgen Hofmann, Thomas Kessler, David Fischer
  • Patent number: 6111040
    Abstract: A catalyst comprises a composition resulting from mutual contact of the following Components. (A), (B), (C) and (D):said Component (A) being a reaction product resulting from mutual contact of components (a), (b) and (c);said component (a) being represented by the formulaMe.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sup.1.sub.4-p-q Iwherein R.sup.1 and R.sup.2 each are a C.sub.1 -C.sub.24 hydrocarbon moieties, X.sup.1 is a hydrogen atom or a halogen atom, Me.sup.1 is titanium, zirconium or hafnium, p and q are 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4 and 0.ltoreq.p+q.ltoreq.4,said component (b) being represented by the formulaMe.sup.2 R.sup.3.sub.m (OR.sup.4).sub.n X.sup.2.sub.z-m-n IIwherein R.sup.3 and R.sup.4 each are a C.sub.1 -C.sub.2 4 hydrocarbon moieties, X.sup.2 is a hydrogen atom or a halogen atom, Me.sup.2 is an element of Groups I to III in the Periodic Table, z is a valence of Me.sup.2, and m and n are 0.ltoreq.m.ltoreq.z, 0.ltoreq.n.ltoreq.z and 0.ltoreq.m+n.ltoreq.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: August 29, 2000
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Hiroyuki Shimizu, Akira Sano, Kazuo Matsuura
  • Patent number: 6107431
    Abstract: Fractionable, reactor blend polypropylenes, directly obtainable from the polymerization reaction of propylene, having:(a) content of isotactic pentads (mmmm) comprised between 25 and 85%;(b) ratio M.sub.w /M.sub.n <5;containing from 10 to 70% by weight of a fraction soluble in boiling diethyl ether, said fraction having a content of isotactic pentads (mmmm) comprised between 5 and 25%, and from 30 to 90% by weight of a boiling n-heptane-insoluble fraction, soluble in xylene at 135.degree. C., said fraction having a content of isotactic pentads (mmmm) comprised between 50 and 99%, are disclosed. These polymers are suitable as thermoplastic-elastomeric materials. A process for the preparation of these polymers and a process for the preparation of 2-aryl-substituted indenyl metallocene ligands is also disclosed.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: August 22, 2000
    Assignee: Montell Technology Company BV
    Inventors: Luigi Resconi, Fabrizio Piemontesi, Lin-Chen Yu
  • Patent number: 6103654
    Abstract: A catalytic composition for the production of light alpha olefins by ethylene oligomerisation is produced by mixing a zirconium compound with an organic compound selected from the group formed by acetals and ketals, with an aluminium hydrocarbyl compound selected from the group formed by chlorine-containing or bromine-containing aluminium hydrocarbyl compounds and with an aluminium hydrocarbyl compound selected from tris-(hydrocarbyl)-aluminium compounds. Addition of a tris-(hydrocarbyl)-aluminium compound greatly increases the activity. A process for producing light alpha olefins by ethylene oligomerisation is also claimed.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: August 15, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Dominique Commereuc, Serge Boivineau, Fran.cedilla.ois Hugues, Lucien Saussine
  • Patent number: 6100352
    Abstract: A styrene type monomer is polymerized by use of a catalyst consisting of (a) a transition metal compound, (b1) a compound capable of forming an ionic compound by reacting with the transition metal compound, and if necessary (d) an alkylating agent, which comprises subjecting to a polymerization reaction a monomer to which (c) an oxygen-containing compound having a branched alkyl group, or (c) said oxygen-containing compound and (d) all or a part of an alkylating agent have previously been added, or by a process for producing a polymer in which a monomer particularly a styrene type monomer is polymerized by use of a catalyst consisting of (a) a transition metal compound, (b1) a compound capable of forming an ionic compound by reacting with the transition metal compound, (b2) a specific oxygen-containing compound, and if necessary (d) an alkylating agent, which comprises subjecting to a polymerization reaction a monomer to which (c) an oxygen-containing compound having a branched alkyl group, or (c) said oxygen
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: August 8, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hajime Shouzaki, Norio Tomotsu
  • Patent number: 6090903
    Abstract: A propylene homopolymer having a high stereo-regularity and an excellent processability during sheet or film formation, characterized in that it exhibits a melt flow rate (MFR) of from 0.1 to 20 g/10 min., a xylene-soluble component content of not more than 6% by weight and an isoblock content [IB] of at least 3 mol % as determined by the following equation (1) from Pmmmr, Pmmrr and Pmrrm, which are absorption intensities attributed to isoblock chain in xylene-insoluble component by .sup.13 C-NMR spectrum:[IB]=[Pmmmr]+[Pmmrr]+[Pmrrm] (1)wherein [Pmmmr], [Pmmrr] and [Pmrrm] are the relative intensity ratio (mol %) of Pmmmr, Pmmrr and Pmrrm, respectively, which are absorption intensities attributed to isoblock chain.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: July 18, 2000
    Assignee: Toho Titanium Co., Ltd.
    Inventors: Takuo Kataoka, Masayoshi Saito
  • Patent number: 6084048
    Abstract: A propylene-1-butene copolymer wherein a Shore A-scale hardness measured according to ASTM D2240 is not more than 70 and an intrinsic viscosity [.eta.] measured in axylene solvent at the temperature of 70.degree. C. is not less than 0.3 and which shows no crystalline melting peak and no crystallization peak in differential scanning calorimeter (DSC) mesurement.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: July 4, 2000
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Hidetake Hozumi, Yasuhito Ijichi
  • Patent number: 6084046
    Abstract: A random copolymer comprising ethylene, an .alpha.-olefin and a branched conjugated polyvalent olefin, wherein (i) ethylene, the .alpha.-olefin and an iodine value respectively satisfy the following inequalities: 0<ethylene<100 (% by mol), 0<.alpha.-olefin<100 (% by mol) and 0<iodine value<370 (g/100 g), (ii) an intrinsic viscosity [.eta.] measured in decalin at 135.degree. C. of the random copolymer satisfies the following inequality: 0.1 (dl/g)<[.eta.]<10 (dl/g) and (iii) a molecular weight distribution (Mw/Mn).ltoreq.5.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: July 4, 2000
    Assignee: Sumitomo Chemical Company, Limted
    Inventors: Hirofumi Johoji, Tsuyoshi Takei, Tadaaki Nishiyama
  • Patent number: 6080828
    Abstract: An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches, a high melt tension and a high swell ratio, and a process for preparing the ethylene polymer are disclosed. A solid titanium catalyst component obtained by initially bringing a solid titanium composite which is obtained by the contact of a solid magnesium aluminum composite containing magnesium, halogen, aluminum, and an alkoxy group of 6 or more carbon atoms and/or alcohol of 6 or more carbon atoms with a tetravalent titanium compound into contact with an organometallic compound, and then bringing the resulting product into contact with oxygen is further disclosed. An ethylene polymerization catalyst comprising the above catalyst component and an organometallic compound catalyst component is furthermore disclosed. Therefore, the ethylene polymer is excellent in moldability, and a molded article obtained therefrom is excellent in rigidity and impact resistance and free from poor appearance.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: June 27, 2000
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Shin-ichi Kojoh, Mamoru Kioka
  • Patent number: 6075104
    Abstract: A process for polymerizing vinylidene aromatic monomers, such as styrene, to produce polymers having a high degree of syndiotacticity using a catalyst composition comprising a Group 4 metal complex and a hydrocarbylsilane or di(hydrocarbyl)silane catalyst adjuvant is disclosed.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: June 13, 2000
    Assignee: The Dow Chemical Company
    Inventors: Thomas H. Newman, Karen K. Borodychuk
  • Patent number: 6066704
    Abstract: A transition metal complex represented by the formula [1] ##STR1## wherein M is a transition metal atom of the group 4 of the periodic table of elements; Cp is a group having a cyclopentadiene type anionic skeleton; A and G are each a divalent residue containing an atom of the group 15 or 16 of the periodic table of elements and may be the same with or different from each other; X.sup.1, X.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: May 23, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroaki Katayama, Akio Imai, Hidenori Hanaoka, Norio Kawamura, Akira Miyashita
  • Patent number: 6066706
    Abstract: Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers, alone or mixed with at least another copolymerizable ethylenically unsaturated monomer, in the presence of a catalytic system essentially consisting of:a) an adduct between a derivative of titanium having the formula R.sub.1 R.sub.2 R.sub.3 R.sub.4 Ti and a calix-[n]-arene, or an oxa-calix-[n]-arene;b) a co-catalyst selected from an alkylalumoxane and a compound of boron having the formula (II):BX.sub.1 X.sub.2 X.sub.3or its salt.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: May 23, 2000
    Assignee: Enichem S.p.A.
    Inventors: Roberto Santi, Giuseppe Cometti, Riccardo Po'
  • Patent number: 6063726
    Abstract: The invention relates to a polymerization catalyst for alpha-olefins and a process for polymerizing alpha-olefins. The catalyst comprises a component having a transition metal compound supported on a carrier and an aluminoxane. The carrier may be pre-treated with an organometallic compound, a halogen-containing silicon compound or an aluminoxane. Alternatively, the above two catalyst components are subjected to preliminary polymerization of olefins. The catalyst of this invention enables the production of a spherical polymer having a good particle size distribution, an excellent bulk density and a narrow molecular weight distribution in a slurry polymerization method or a vapor-phase polymerization method, particulary the vapor-phase polymerization method. When applied to the copolymerization of at least two olefins, the catalyst has excellent polymerization activity such that an olefin copolymer having a narrow molecular weight distribution and a narrrow composition distribution is obtained.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: May 16, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Mamoru Kioka, Akinori Toyota, Norio Kashiwa, Toshiyuki Tsutsui
  • Patent number: 6054543
    Abstract: Amorphous and impact resistant co/ter-polymer made from olefins and aryl-substituted cyclic monomers by polymerizing using a catalyst, wherein the substituent is a phenyl- or indanyl-group and the catalyst is a metallocene-catalyst. Preferably said aryl-substituted cyclic monomer is phenyl-norbomene (5-phenyl-bicylo-2,2,1-hept-2-ene) or indanyl-norbomene (1,4-methano-1,4,4a,9a-tetrahydrofluorence).
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: April 25, 2000
    Assignee: Optatech Corporation
    Inventors: Christer Hans Bergstrom, Jukka Seppala, Juhana Ruotoistenmaki, Tapio Hase, Sari Paavola, Lars-Olof Pietila, Lisbeth Ahjopalo
  • Patent number: 6046287
    Abstract: Elastomeric ethylene/propylene or ethylene/propylene/-polyene copolymers containing small amounts of one or more .alpha.-olefins are prepared by a slurry process wherein the polymerization reaction is carried out in a mixture of liquid propylene and alpha-olefin. Problems due to fouling phenomena in the reactor are avoided.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: April 4, 2000
    Assignee: Montell Technology Company bv
    Inventors: Maurizio Galimberti, Enrico Albizzati
  • Patent number: 6043326
    Abstract: Ethene having a profitable .alpha.-olefin distribution and an .alpha.-olefin copolymer have been prepared with a process comprising reacting of at least the following components with each other:a) a procatalyst comprising a halogen compound of a transition metal in any of groups 4 to 8 of the periodic table of elements,b) a cocatalyst comprising an organohalogenous compound of a metal in group 2 or 3 of the periodic table of elements,c) ethene andd) one or more .alpha.-olefins copolymerizing with ethene, being characterised in that the organohalogenous compound of the metal in group 2 or 3 is prepared by reacting the organic compound of the metal in group 2 or 3 and a catalytically non-toxic halogen compound during copolymerization, or not earlier than 3 hours before copolymerization.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: March 28, 2000
    Assignee: Borealis Polymers Oy
    Inventors: Leona Sillantaka, Ulf Palmqvist, Eero Iiskola, Susanna Koivujarvi
  • Patent number: 6043325
    Abstract: A process for olefin polymerization, including polymerizing or copolymerizing an olefin in the presence of an olefin polymerization catalyst composed of: a fine particle carrier; (A) a transition metal compound of a Group IVB metal of the periodic table, containing a ligand having a cyclopentadienyl skeleton; (B) an aluminoxane compound; and optionally (C) an organoaluminum compound, wherein said aluminoxane compound has an alkyl groups to aluminum ratio of 1.3 to 2.1; said transition metal compound (A) and said organoaluminum oxy-compound (B) and said organoaluminum compound being supported on the fine particle carrier; and said solid catalyst having a bulk density of 0.3 g/cm.sup.3 to 0.5 g/cm.sup.3 and a fluidity index of 45 to 70 and an olefin polymerization process using the olefin polymerization catalyst; and an olefin prepolymerized catalyst obtained by prepolymerizing the catalyst, and an olefin polymerization process using the olefin prepolymerized catalyst.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: March 28, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Toshiyuki Tsutsui, Ken Yoshitsugu, Masaaki Ohgizawa, Tetsuhiro Matsumoto, Junichi Imuta
  • Patent number: 6034191
    Abstract: An organic aluminoxy compound which shows .sup.27 Al nuclear magnetic resonance spectrum (.sup.27 Al-NMR spectrum) having an A.sub.1 /A.sub.2 ratio of at most 0.1, wherein A.sub.1 is area of a region encompassed by a segment of a line which connects a local minimum point existing between a continuous curve "a" containing a peak appearing at around 150 ppm and a continuous curve "b" containing a peak appearing at around 60 ppm to the point where the above curve "b" comes into contact with the base line and also by the above curve "b" and A.sub.2 is area of a region encompassed by the above curves "a" and "b" and also by the base line; an organic aluminoxy compound containing at least 5%, expressed in terms of aluminum atom, of a portion insoluble in a mixed solvent of toluene and hexane in a ratio by volume of 2:5 at 30.degree. C. or lower; and a catalyst for producing a polymer comprising any of the above organic aluminoxy compounds and a transition metal compound.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: March 7, 2000
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Tsuyoshi Kondoh, Shoji Naganuma, Norio Tomotsu
  • Patent number: 6034190
    Abstract: An olefin polymerization catalyst component is represented by the general formula (1): ##STR1## wherein M is a transition metal of the 4.sup.th Group or the Lanthanide Series in the Periodic Table; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R" represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst along with an aluminum or born-containing cocatalyst to produce an olefin polymer or copolymer.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: March 7, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroaki Katayama, Masaaki Nabika, Akio Iami, Norio Kawamura, Hidenori Hanaoka
  • Patent number: 6028151
    Abstract: A process for producing an olefin polymer, which comprises contacting at least two olefin monomers under polymerization conditions with a catalyst composition comprising A) an aluminoxane-impregnated support prepared by contacting an aluminoxane with an inert carrier material and heating to a temperature of at least about 80.degree. C.; B) a metallocene of the formula:(L).sub.y (L')MY.sub.(x-y-1)wherein M is a metal from groups IIIB to VIII of the Periodic Table; each L and L' is independently a cycloalkadienyl group bonded to M; each Y is independently hydrogen, an aryl, alkyl, alkenyl, alkylaryl, or arylalkyl radical having 1-20 carbon atoms, a hydrocarboxy radical having from 1-20 carbon atoms, a halogen, RCO.sub.2 --, or R.sub.2 N--, wherein R is a hydrocarbyl group containing 1 to about 20 carbon atoms; y is 0, 1, or 2; x is 1, 2, 3, or 4; and x-y.gtoreq.1; C) a bulky aluminum alkyl of the formula:AlR.sup.1.sub.x R.sup.2.sub.(3-x)wherein R.sup.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: February 22, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Eric Paul Wasserman, Sun Chueh Kao, Frederick John Karol
  • Patent number: 6022935
    Abstract: Polymers of C.sub.2 -C.sub.12 -alk-1-enes are prepared at from -50 to 300.degree. C. and from 0.5 to 3000 bar in the presence of a catalyst system by a process in which the catalyst system used is one which containsA) an inorganic or organic carrier,B) a metallocene complex,C) a compound forming metallocenium ions andD) if required, a metal compound of the general formula IM.sup.1 (R.sup.1).sub.r (R.sup.2).sub.s (R.sup.3).sub.t IwhereM.sup.1 is an alkali metal, an alkaline earth metal or a metal of main group III of the Periodic Table,R.sup.1 is hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl or arylalkyl, each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,R.sup.2 and R.sup.3 are each hydrogen, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 8, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: David Fischer, Helmut Frank, Martin Lux, Roland Hingmann, Gunther Schweier
  • Patent number: 6011127
    Abstract: A process for the production of ethylenic polymers is disclosed in which an ethylenic monomer is polymerized in the presence of a catalyst comprising a chromium compound, an alumoxane and an organometallic alkoxide and/or organometallic siloxide and a carrier supporting thereon these compounds. The resultant polymer has a balanced proportion of rigidity and environmental stress cracking resistance (ESCR) and an excellent moldability property.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: January 4, 2000
    Assignee: Showa Denko K.K.
    Inventors: Takashi Monoi, Masakazu Yamamoto, Hidenobu Torigoe, Yoshimitsu Ishihara, Shintaro Inazawa
  • Patent number: 6005061
    Abstract: In accordance with the present invention there is provided a new solid aluminoxy composition prepared by reacting aluminoxane with a boroxine. Still further there is provided olefin polymerization catalyst systems incorporating the inventive solid aluminoxy composition. Still further, there is provided processes of polymerization using the inventive solid aluminoxy composition.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: December 21, 1999
    Inventors: Rolf L. Geerts, Tara G. Hill, Scott E. Kufeld
  • Patent number: 5962615
    Abstract: An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches, a high melt tension and a high swell ratio produced by using a solid titanium catalyst component obtained by initially bring a solid titanium composition which is obtained by the contact of a solid magnesium aluminum composite containing magnesium, halogen, aluminum, and an alkoxy group of 6 or more carbon atoms and/or alcohol of 6 of more carbon atom with a tetravalent titanium compound into contact with an organometallic compound, and then bringing the resulting product into contact with oxygen. The ethylene polymer is excellent in moldability, and the molded article obtained therefrom is excellent in rigidity and impact resistance and free from poor appearance.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: October 5, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Shin-ichi Kojoh, Mamoru Kioka
  • Patent number: 5959046
    Abstract: A process for producing a propylene polymer having an intrinsic viscosity (.eta.), as measured in decahydronaphthalene at 135.degree. C., of 1 to 12 dl/g comprises polymerizing propylene optionally with other olefins in the presence of an olefin polymerization catalyst comprising a transition metal compound represented by the formula ##STR1## wherein R.sup.1 and R.sup.2 are each a hydrogen atom or a hydrocarbon group of 1 to 3 carbon atoms,X.sup.1 and X.sup.2 are each a halogen atom, andY is a divalent silicon-containing group.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: September 28, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Junichi Imuta, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki
  • Patent number: RE37064
    Abstract: There is disclosed a process for producing a styrenic polymer, especially, syndiotactic polystyrene, which comprises polymerizing a styrenic monomer by the use of (a) a transition metal compound, (b) a coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation or methylaluminoxane, (c) an alkylating agent (alkyl group-containing aluminum, magnesium or zinc compound) and (d) a reaction product between a straight-chain alkylaluminum having at least two carbon atoms and water (alkylaluminoxane). The above process is capable of simplifying the production process and producing high-performance styrenic polymer having a high degree of syndiotactic configuration in high catalytic activity without deteriorating the catalyst activity, increasing the amounts of residual metals in the objective polymer or leaving the decomposition products of the alkylaluminum therein, thereby curtailing the production cost of the objective polymer.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: February 20, 2001
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yoshiaki Aoyama, Norio Tomotsu