Aluminum Trihalide Patents (Class 526/157)
  • Patent number: 8362153
    Abstract: The present invention provides for polyisobutenyl sulfonates, methods for preparing them, and composition employing them; wherein said polyisobutenyl sulfonates have improved low temperature and high temperature viscometric properties. The polyisobutenyl sulfonates are prepared by sulfonating polyisobutene and reacting the polyisobutenyl sulfonate with an alkali metal or alkaline earth metal, wherein the polyisobutene is characterized by having at least 90 mole percent methyl-vinylidene, a number average molecular weight of about 350 to 5,000, and a ratio of weight average molecular weight to number average molecular weight Mw/Mn of from about 1.01 to about 1.4.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: January 29, 2013
    Assignee: Chevron Oronite Company LLC
    Inventor: James J. Harrison
  • Patent number: 7897710
    Abstract: Film formed from a polyethylene resin composition which obeys a dynamic rheological relationship at 190° C. between melt storage modulus G?, measured in Pa and at a dynamic frequency where the loss modulus G?=3000 Pa, and dynamic complex viscosity ?*100, measured in Pa·s at 100 rad/s, such that (a) G?(G?=3000)>?0.86?*100+z where z=3800, and at the same time (b) G?(G?=3000)>0.875?*100?y where y=650, and having an impact strength (DDT) of at least 250 g, measured on 15 ?m thick film (blown under conditions with BUR=5:1 and Neck Height=8×D) conditioned for 48 hours at 20°-25° C., according to ASTM D1709.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: March 1, 2011
    Assignee: Ineos Manufacturing Belgium NV
    Inventors: John Amos, Choon Kooi Chai, Luc Marie Ghislain Dheur
  • Patent number: 7820580
    Abstract: A nickel-carbene polymerization catalyst system for preparing high cis polydienes is provided. The catalyst system comprises (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol. Also provided is a process for producing a polydiene comprising reacting a conjugated diene in the presence of a polymerization catalyst comprising (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: October 26, 2010
    Assignee: Bridgestone Corporation
    Inventors: Zengquan Qin, Jason T. Poulton, Michael W. Hayes
  • Patent number: 7504141
    Abstract: A shrink film comprising a polyethylene film, characterized in that said polyethylene is an ethylene copolymer mixture having a molecular weight distribution in the range 10 to 35, a density of 915 to 940 kg/m3, a weight average molecular weight of at least 100000 D and an MFR2.16 (190° C.) of 0.1 to 0.9 kg/m3, which copolymer mixture is produced by a two or more stage copolymerization of ethylene and 2 to 10% mole (relative to ethylene) of a C3-12 alpha-olefin comonomer in a series of reactors including at least one slurry loop reactor and at least one gas phase reactor using a heterogeneous Ziegler-Natta catalyst.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: March 17, 2009
    Assignee: Borealis Technology Oy
    Inventors: Ole Jan Myhre, Merete Skar, Hans Georg Daviknes, Kjetil Larsen Brove, Geir Morten Johansen
  • Patent number: 7105615
    Abstract: The invention concerns a cationic catalyst system comprising an initiator (I), a catalyst (K) and a cocatalyst (CoK). The cocatalyst (CoK) is an agent releasing the active polymerizing center of its counter anion generated by the reaction between the catalyst (K) and the initiator (I). Said cocatalyst is characterized by the existence of a double bond electron-depleted by an electroattractive group. It is selected, for example, from the group consisting of the following complexing agents including o-chloranyl (3,4,5,6-tetrachloro-1,2-benzoquinone), p-chloranyl (2,3,5,6-tetrachloro-1,4-benzoquinone), nitrobenzene, trinitrobenzene, or tetracyanoethylene.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: September 12, 2006
    Assignee: Arkema France
    Inventors: Reinhard Linemann, Guillaume Le
  • Patent number: 6911507
    Abstract: A cyclic olefin having a specific polar group is polymerized by addition polymerization in a hydrocarbon solvent, using a polymerization catalyst component containing (i) a specific transition metal compound, (ii) a Lewis acid compound and (iii) an alkyl aluminoxane, or the cyclic olefin is polymerized by addition polymerization in the hydrocarbon solvent, using the polymerization catalyst component, by further adding at least one aromatic vinyl compound and at least one cyclic nonconjugated polyene compound, or either one of them as a molecular weight modifier, thereby obtaining a cyclic olefinic addition polymer.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: June 28, 2005
    Assignee: JSR Corporation
    Inventors: Kenzo Ohkita, Noboru Oshima, Takashi Imamura, Takashi Tsubouchi
  • Patent number: 6878786
    Abstract: Process for the polymerization of olefins comprising contacting olefins under polymerization conditions in the presence of a catalyst system comprising the product obtained by contacting: (A) at least one transition metal organometallic compound, pyrolidyl bis(?-cyclopentadienyl)methylzirconium being excluded, and (B) an organometallic compound obtained by contacting: (a) a Lewis base having formula (I): ?wherein Ra, Rb, Rc and Rd, equal to or different from each other, are selected from the group consisting of hydrogen, halogen, linear or branched, saturated or unsaturated, C1-C10 alkyl, C6-C20 aryl, C7-C20 arylalkyl and C7-C20 alkylaryl groups; with b) a Lewis acid of formula (II) MtR13??(II) ?wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements; R1, equal to or different from each other, are selected from the group consisting of halogen, halogenated C6-C20 aryl and halogenated C7-C20 alkylaryl groups; and (C) optionally an alkylating agent.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: April 12, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Luigi Resconi, Simona Guidotti
  • Patent number: 6657020
    Abstract: A process for preparing polypropylene-b-poly(ethylene-co-propylene) by the use of a tubular continuous polymerizer in the presence of an olefin-polymerizing catalyst comprising a solid catalyst component (1) composed of titanium and halogen; an organosilicon compound (2); and, if necessary, at least one electron-donating compound (3) selected from the group consisting of organosilicon compounds represented by the general formula: RnSi(OR′)4−n (wherein R and R′ are each independently a C1-C10 hydrocarbon group; and n is an integer of 1 to 3) and nitrogenous heterocyclic compounds, wherein the solid catalyst component (1) is preliminarily brought into contact with the organosilicon compound (2) in the presence of the electron-donating compound (3), and then a polypropylene segment is formed through polymerization, followed by formation of a poly(ethylene-co-propylene) segment at the end of the polypropylene segment through polymerization.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: December 2, 2003
    Assignees: Chisso Petrochemical Corporation, Japan Science and Technology Corporation
    Inventors: Minoru Terano, Tetsuya Matsukawa, Hideshi Satake, Masato Takahashi
  • Patent number: 6608224
    Abstract: An organometallic compound obtainable by contacting a) a compound having the following formula (I): wherein Ra, Rb, Rc and Rd equal to or different from each other are hydrocarbon groups b) a Lewis acid of formula (II) MtR13   (II) wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements (IUPAC); R1, equal to or different from each other, are selected from the group consisting of halogen, halogenated C6-C20 aryl and halogenated C7-C20 alkylaryl groups; two R1 groups can also form with the metal Mt one condensed ring. These compounds are useful as cocatalysts for polymerizing olefins.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: August 19, 2003
    Assignee: Basell Polyolefine GmbH
    Inventors: Luigi Resconi, Simona Guidotti
  • Patent number: 6586543
    Abstract: The present invention provides a process for preparing a substantially amorphous poly-&agr;-olefin, which includes: a) preforming a solid catalyst and, optionally, a first amount of a trialkylaluminum cocatalyst, by contacting the catalyst and optionally the cocatalyst with at least one selected from the group including oxygen and a compound which includes active oxygen, to form a preformed catalyst, wherein the solid catalyst includes magnesium, aluminum and titanium, and wherein said trialkylaluminum cocatalyst includes 1 to 9 carbon atoms in each alkyl group; b) contacting the preformed catalyst with a second amount of the cocatalyst, wherein a molar ratio of trialkylaluminum to the titanium ranges from 40:1 to 700:1, to form a catalyst mixture; c) polymerizing, in the liquid phase, with the catalyst mixture, an olefin or an olefin mixture at a temperature between 30 and 160° C., to produce the poly-&agr;-olefin.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 1, 2003
    Assignee: Degussa AG
    Inventors: Hans Guenther Wey, Norbert Schlueter
  • Patent number: 6576724
    Abstract: A catalytic composition for the dimerization, the codimerization or the oligomerization of olefins results from the dissolution of at least one nickel complex that contains a heterocyclic carbene in a liquid mixture that comprises at least one ammonium halide or quaternary phosphonium halide, at least one aluminum halide and optionally at least one organometallic aluminum compound. It is used in a process of dimerization, codimerization or oligomerization of olefins.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: June 10, 2003
    Assignee: Institut Francais du Petrole
    Inventors: Helene Olivier-Bourbigou, Dominique Commereuc, Stephane Harry
  • Patent number: 6417301
    Abstract: There is described a process utilizing Ziegler-Natta catalysts for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (Tm). The process involves contacting ethylene and at least one other olefin under polymerization conditions with a Ziegler-Natta catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the process.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: July 9, 2002
    Assignee: Eastman Chemical Company
    Inventors: Randal Ray Ford, Jeffrey James Vanderbilt, Darryl Stephen Williams
  • Publication number: 20020086959
    Abstract: The present invention provides a novel process for the preparation of isoolefin copolymers in the presence of zirconium halides or hafnium halides or mixtures thereof and organic nitro compounds, especially for the preparation of butyl rubbers, as well as isoolefin copolymers composed of isobutene, isoprene and, optionally, further monomers.
    Type: Application
    Filed: August 27, 2001
    Publication date: July 4, 2002
    Inventors: Gerhard Langstein, Martin Bohnenpoll
  • Patent number: 6300449
    Abstract: This invention relates to a novel class of polymeric resins which have a softening point ranging from about 50° C. to about 220° C. and a molecular weight ranging from about 500 to about 42,000. The resins consist essentially of the polymers which result from the polymerization reaction between dicyclopentadiene and limonene. The polymeric resins are particularly useful in improving traction of the rubber when used in tire treads.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: October 9, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson Gibson Wideman, Thomas Joseph Segatta, Denise Jeannette Keith
  • Patent number: 6300448
    Abstract: This invention relates to a novel class of polymeric resins which have a softening point ranging from about 50° C. to about 220° C. and a molecular weight ranging from about 500 to about 42,000. The resins consist essentially of the polymers which result from the polymerization reaction between dicyclopentadiene and limonene. The polymeric resins are particularly useful in improving traction of the rubber when used in tire treads.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: October 9, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson Gibson Wideman, Thomas Joseph Segatta, Denise Jeannette Keith
  • Patent number: 6281317
    Abstract: This invention relates to a novel class of polymeric resins which have a softening point ranging from about 50° C. to about 220° C. and a molecular weight ranging from about 500 to about 42,000. The resins comprise the polymers which result from the polymerization reaction between dimethyl dicyclopentadiene and limonene. The polymeric resins are particularly useful in improving traction of the rubber when used in tire treads.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: August 28, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Mark Leslie Kralevich, Jr., Edward John Blok, Lawson Gibson Wideman, Paul Harry Sandstrom
  • 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: 6040399
    Abstract: An ethylene base polymer and a preparation method of an ethylene base polymer characterized in use of a catalyst comprising a chromium amide compound, a solid inroganic oxide calcined at 100 to 500.degree. C. and alumoxane. According to the present invention, an ethylene base polymer with a wide molecular weight distribution, excellent shock and environmental stress cracking resistances, causing no melt fracture, and suitable for film forming and blow molding can be effectively prepared.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: March 21, 2000
    Assignee: Japan Polyolefins Co., Ltd.
    Inventors: Takashi Monoi, Masakazu Yamamoto, Hidenobu Torigoe, Yasunori Takemoto
  • Patent number: 5571885
    Abstract: Immobilized Lewis Acid catalyst comprising polymer having at least one Lewis Acid immobilized within the structure therein, said polymer having monomer units represented by the structural formula:--[A].sub.a --[B].sub.b --[C].sub.c --whereina represents about 1 to about 99 mole %b represents about 0 to about 50 mole %c represents about 1 to about 99 mole %a+b+c is preferably about 100%; ##STR1## C is selected from the group consisting of: ##STR2## (III) combinations thereof, wherein D is OH, halide, OR.sup.4, NH.sub.2, NHR.sup.3, OM', or OM";E is the residue of the reaction of at least one Lewis Acid with the D substituent of monomer unit B;R.sup.1 represents proton, C.sub.1 -C.sub.24 alkyl group, or C.sub.3 -C.sub.24 cycloalkyl;R.sup.2 represents C.sub.1 -C.sub.24 alkylene group, C.sub.3 -C.sub.24 cycloalkylene, C.sub.6 -C.sub.18 arylene, or C.sub.7 -C.sub.30 alkylarylene;R.sup.3 represents C.sub.1 -C.sub.24 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.1 -C.sub.24 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: November 5, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Tze-Chiang Chung, Frank J.-Y. Chen, Jon E. Stanat, Alok Kumar
  • Patent number: 5502126
    Abstract: The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: March 26, 1996
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Anthony J. Bell, Barry A. Matrana, Adel F. Halasa
  • Patent number: 5187246
    Abstract: An improved polymerization process for making essentially non-agglomerated ethylene polymers, especially EPR polymers, based on the use of a high activity vanadium catalyst, which utilizes an alkylated metal chain transfer agent to moderate the kinetics of the polymerization reaction so as to avoid formation of an undesirable amount of agglomerated polymer.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: February 16, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Edgar C. Baker, Francis G. Stakem, Allen Noshay, Kiu H. Lee, Arthur E. Marcinkowsky
  • Patent number: 5096970
    Abstract: A conjugated diene compound prepolymer solution useful for the production of a vinyl aromatic compound high impact polymer material is produced by a process in which a prepolymerization mixture is prepared from 1 to 70 parts by weight of a conjugated diene compound and 30 to 99 parts by weight of a vinyl aromatic compound, and is prepolymerized at 0.degree. C. to 150.degree. C. in the presence of a prepolymerization catalyst which can cause the conjugated diene compound to be selectively polymerized but is substantially not effective for the polymerization of the vinyl aromatic compound to an extent such that the conjugated diene compound and the vinyl aromatic compound are prepolymerized at degrees of conversion of the conjugated diene compound at least 50% and 10% or less, respectively, and the resultant prepolymer solution is further polymerized by a radical or anionic polymerization method so that the vinyl aromatic compound is polymerized with the conjugated diene compound prepolymer.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: March 17, 1992
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yasuo Hattori, Yuichi Kitagawa
  • Patent number: 4740570
    Abstract: Metal halide particles useful, among other things, as olefin polymerization catalyst precursors and catalyst supports, are prepared by vaporizing the metal halide and then condensing it in the presence of a diluent.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: April 26, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ulrich Klabunde, Rolf Mulhaupt
  • Patent number: 4721753
    Abstract: A diene polymer composition having improved fracture properties and a small change in the shape of extruded product is disclosed, which comprises at least 5% by weight of a copolymer composed of at least one conjugated diene (component A) having the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are a hydrogen atom or a methyl group, and 2,3-dimethylbutadiene (component B), said copolymer having a content of cis-1,4-bond of not less than 80%.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: January 26, 1988
    Assignees: Bridgestone Corporation, Japan Synthetic Rubber Co., Ltd.
    Inventors: Mitsuhiko Sakakibara, Kaoru Nakako, Tatsuo Fujimaki
  • Patent number: 4680351
    Abstract: A highly active catalyst suitable for the polymerization of olefins and its use are disclosed, said catalyst being prepared by(1) co-comminuting an aluminum halide; at least one electron donor; a Group IVB-VIB transition metal compound; and a support base selected from the group consisting of the Group IIA and IIIA salts and the salts of the multivalent metals of the first transition series with the exception of copper to produce a coground solid;(2) extracting said coground solid with an organic liquid; and(3) separating the solid from the liquid under such conditions that at least 5 weight percent of the aluminum in the coground solid is removed.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: July 14, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Nemesio D. Miro, Floyd E. Farha, Charles E. Capshew
  • Patent number: 4520177
    Abstract: The invention relates to a method of polymerizing one or more conjugated diene monomers to a polymer having an exceptionally high cis content employing a three component catalyst comprising (a) a rare earth compound, (b) an organo magnesium compound and (c) a Lewis acid in which a particular order of component addition is used. Under optimum conditions it is possible to obtain nearly 100% conversion to polymers of 98% or more cis content at very low concentrations of rare earth compound with respect to monomer.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: May 28, 1985
    Inventor: Derek K. Jenkins
  • Patent number: 4468496
    Abstract: A rubber composition having excellent fracture properties and cut growth resistance is disclosed, which consists of 10-95 parts by weight of polybutadiene having a content of cis-1,4 bond of at least 70% and an average chain length of 1,4-sequence of 110-450 and 90-5 parts by weight of at least one diene rubber.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: August 28, 1984
    Assignees: Bridgestone Tire Co., Ltd., Japan Synthetic Rubber Co., Ltd.
    Inventors: Yasumasa Takeuchi, Mitsuhiko Sakakibara, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata, Shigeru Tomihira
  • Patent number: 4429089
    Abstract: A novel catalytic system is disclosed which is especially adapted for the polymerization and the copolymerization of aliphatic conjugated diolefines, the system comprising an organic compound of aluminum, a Lewis acid containing at least one halogen, and an organic compound of a lanthanide metal. The catalyst system has outstanding and hitherto unparalleled activity. The method of preparation of the catalytic system is also described in detail.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: January 31, 1984
    Assignee: Anic, S.p.A.
    Inventors: Ugo Pedretti, Gabriele Lugli, Sergio Poggio, Alessandro Mazzei
  • Patent number: 4378455
    Abstract: The present disclosure relates to a process for alternating copolymerization of propylene and butadiene in the absence of a polymerization solvent. The disclosure contains information relative to commercial production of the said copolymer and detailed teachings relative to the preparation of catalyst for use in the said process.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: March 29, 1983
    Assignee: Maruzen Petrochemical Co., Ltd.
    Inventors: Akihiro Kawasaki, Tsuyoshi Matsumoto, Masanobu Taniguchi, Isao Maruyama, Masaaki Matsui, Masao Kaneko, Akihiko Imai
  • Patent number: 4285834
    Abstract: A catalyst mixture containing at least two independently supported catalysts, at least one of which is an inorganic halide supported titanium and/or vanadium Ziegler type catalyst and at least one other is an inorganic oxide supported, chromium catalyst.These catalyst mixtures are suitable for polymerizing one or more .alpha.-olefins.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: August 25, 1981
    Assignee: The Dow Chemical Company
    Inventors: Kirby Lowery, Jr., Fred L. Vance, Jr.
  • Patent number: 4242232
    Abstract: A catalyst comprising(a) a reaction mixture formed by reacting M(RCO.sub.2).sub.3 with AlR.sub.3'.sup.1(b) AlR.sub.3.sup.2 and / or HAlR.sub.2.sup.2 and(c) a Lewis acidwherein M denotes a trivalent rare earth element with an atomic number of 57 to 71, R denotes a saturated or unsaturated, straight chain or branched chain aliphatic hydrocarbon group having 1 to 20 C-atoms which may be substituted one or more times with cycloalkyl having 5 to 7-atoms and/or phenyl, the carboxyl group being attached to a primary, secondary or tertiary C-atom; a cycloalkyl group having 5 to 7 ring carbon atoms, which may be substituted one or more times with alkyl groups having from 1 to 5 C-atoms; or an aromatic group having from 6 to 10 ring carbon atoms, which may be substituted one or more times with alkyl groups having 1 to 5 C-atoms, and R.sup.1 and R.sup.2 are identical or different, straight chain or branched chain alkyl groups having from 1 to 10 C-atoms.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: December 30, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Sylvester, Josef Witte, Gunter Marwede
  • Patent number: 4194992
    Abstract: A novel catalyst system for the polymerization or copolymerization as the case may be, of alpha-olefines is disclosed, which comprises a cocatalyst which is an aluminum-organic compound and a catalyst proper which is obtained by reacting metal vapors (such as vapors of Mg, Al, Ti, V, Cr, Mn, Fe or their alloys) with Ti or V compounds, a halogen donor and a hydrocarbonaceous inert diluent being possibly present. Another aspect of the invention is the conduct of the polymerization, or copolymerization, run proper. Numerous examples of practical application of the catalyst preparation and use are given and the advantages of the novel approach shown.
    Type: Grant
    Filed: July 20, 1978
    Date of Patent: March 25, 1980
    Assignee: Snamprogetti, S.p.A.
    Inventors: Margherita Corbellini, Alberto Greco
  • Patent number: 4173698
    Abstract: A solid catalytic component for polymerization of an olefin is prepared by reacting a vanadium trichloride ether complex with aluminum halide.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: November 6, 1979
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Natsuki Kanoh, Toru Tanaka, Atsushi Murakami
  • Patent number: 4145497
    Abstract: Uranium-containing mixed catalysts containing uranium in the formal oxidation state +4 as uranium salts of carboxylic acids, a Lewis acid, and an organometallic aluminum compound are prepared and can be used for stereospecific polymerization of diolefins or mixtures of diolefins and monoolefins.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: March 20, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Sylvester, Josef Witte, Gunter Marwede
  • Patent number: 4127710
    Abstract: A 1,3-cyclodiene comonomer and a linear conjugated diene comonomer are copolymerized employing a catalyst formed from a mixture comprising a triorganoaluminum compound, a nickel (II) compound and a Friedel-Crafts type cocatalyst. Also, a catalyst and a method for the production thereof which is useful in the copolymerization is provided.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: November 28, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Henry L. Hsieh
  • Patent number: 4063010
    Abstract: Novel amorphous copolymers of mono-olefins or of mono-olefins and non-conjugated dienes with unsaturated derivatives of imides are disclosed. These copolymers containing from 99.9 to 80% by weight of non-polar units derived from at least two mono-olefins containing 2 to 18 carbon atoms, particularly ethylene and propene or ethylene and butene-1, and possibly one or more non-conjugated dienes, and from 0.1 to 20% units derived from an imide having the formula ##STR1## wherein Z is an alkenyl radical containing 2 to 16 carbon atoms, andA designates a saturated or unsaturated divalent hydrocarbon radical which contains 2 to 12 carbon atoms and which may possibly carry amino, halogeno or carboxyl groups.Some of said copolymers may be used as polymer additives in lubricating compounds to improve their viscosity index and to disperse the slurry which they may contain.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: December 13, 1977
    Assignee: Societe Nationale Elf Aquitaine (SNEA)
    Inventors: Gilbert Marie, Andre Lang, Gilbert Chapelet
  • Patent number: 3981849
    Abstract: High molecular weight, low density copolymers of ethylene and propylene and/or butene-1 are prepared by a low pressure liquid phase polymerization process using a titanium halide - organoaluminum catalyst in a polymerization solvent containing butene-2. Consistently comparable ethylene copolymers can be obtained from monomer mixtures of varying composition.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: September 21, 1976
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Albert Frese, Fritz Baxmann, Walter Dittmann
  • Patent number: 3980623
    Abstract: This invention is directed to a process for preparing copolymers of ethylene with certain alpha olefins and nonconjugated dienes. The novel aspect of this invention relates to a catalyst system comprising a vanadium tetrachloride catalyst in conjunction with a cocatalyst comprising equimolar quantities of ethyl aluminum dichloride and tri-isobutyl aluminum. Isobutyl aluminum dichloride may be substituted for the ethyl aluminum dichloride. The product prepared by this process has a high number average molecular weight and is high in tensile strength when compounded with carbon blacks or mineral fillers and extender oils. Additionally, the polymer of this invention exhibits a rapid cure rate. Since the product further exhibits a narrow molecular weight distribution and low crystallinity, there is a greatly reduced die swell upon extrusion. The combination of the high molecular weight, narrow molecular weight distribution and low crystallinity produce a vulcanized product of low compression set.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: September 14, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: John H. Staib, Joseph Wagensommer
  • Patent number: 3951935
    Abstract: Essentially amorphous polyolefines of medium molecular weight are prepared by polymerization of .alpha.-olefines in the presence of a Ziegler supported catalyst. This catalyst consists of the reaction product of the chloride and/or alcoholates of the tetravalent titanium and of an alcoholate and/or a magnesium compound containing hydroxyl groups and of an aluminiumorganic compound containing chlorine, in which the proportion Al : Cl is 4:1 to 0.8:1. The polymerization is carried out at a temperature of from 100.degree. to 160.degree.C.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: April 20, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Manfred Engelmann