Patents Examined by J. Pasterczyk
  • Patent number: 6043403
    Abstract: A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. The compounds obtainable in high yields with this simple single-step process can be used to prepare ansa-metallocenes which are active as catalyst components in the polymerization of olefins.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: March 28, 2000
    Assignee: Montell Technology Company bv
    Inventors: Ilya E. Nifant'ev, Pavel V. Ivchenko
  • Patent number: 6043180
    Abstract: A supported catalyst component prepared from a support material and an alumoxane, containing 15-40 weight percent of aluminum from the alumoxane (based on the total weight of the support material and alumoxane), said supported catalyst component being obtained by heating said support material and alumoxane under an inert atmosphere at a temperature of from about 85 to about 250.degree. C. for a period sufficient to fix said alumoxane to the support material, to provide a supported catalyst component; wherein not more than about 10 percent aluminum from said alumoxane and present in the supported catalyst component is extractable in a one-hour extraction with toluene at 90.degree. C. using 10 ml toluene per gram of supported catalyst component; and a transition metal compound, and a process for the preparation of the supported catalyst.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: March 28, 2000
    Assignee: The Dow Chemical Company
    Inventors: Grant B. Jacobsen, Peter L. Wauteraerts, Lee Spencer
  • Patent number: 6040263
    Abstract: A novel non-aqueous catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group consisting of tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulphonate, fluorosulphonate, trifluoromethylsulphonate, trifluoroarsenate, dichlorocuprate, trichlorocuprate, tetrachlorocuprate, and trichlorozincate, and at least one complex of a transition metal from groups 8, 9 or 10, i.e., iron, ruthenium, colbalt, rhodium iridium, nickel, palladium and platinum. The catalyst can be used in a process of total or selective hydrogenation of unsaturated compounds such as monoolefins, diolefins, acetylene compounds, aromatic compounds, or polynuclear aromatic compounds. Hydrogenation may be accompanied by isomerisation.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: March 21, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Lothar Mussmann, Yves Chauvin, Helene Olivier
  • Patent number: 6040402
    Abstract: A polymerization process comprising contacting at least one olefin under polymerization conditions with a catalyst composition produced by combining an organoaluminoxane cocatalyst and a polymeric metallocene catalyst prepared by (1) forming a fluorine-containing polymer by (a) polymerizing a 2-vinyl fluorenyl compound or (b) polymerizing a fluorenyl compound by reacting it with chloro methyl methyl ether in the presence of zinc dichloride or aluminum trichloride; (2) reacting the fluorenyl-containing polymer with an alkali metal compound; and (3) reacting the product of step (2) with a transition metal-containing compound.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: March 21, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Helmut G. Alt, Peter Schertl
  • Patent number: 6037427
    Abstract: Olefins are polymerized with a catalyst system resulting from the combination of unbridged substituted indenyl cyclopentadienyl metallocenes and an organoaluminum cocatalyst.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: March 14, 2000
    Inventors: Claudia Schmid, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6037297
    Abstract: The invention is directed towards a metal complex having the formula LMX.sub.1 X.sub.2. L is a bidentate nitrogen-containing ligand with more than two nitrogen atoms. M is copper, silver, or gold. X.sub.1 and X.sub.2 are independently selected from the group consisting of halogens, C.sub.1 through C.sub.12 straight chain, branched, or cycloalkyl or aryl, C.sub.1 through C.sub.12 straight chain, branched, or cycloalkoxy, hydride, triflate, trifluoroacetate, trisperfluorotetraphenylborate, and tetrafluoroborate. Such metal complexes have a tetrahedral or pseudo-tetrahedral structure. The invention relates to a catalyst composition of the reaction product of the metal complex and an activating cocatalyst. The invention is also directed towards a method for forming polymers and copolymers using such catalyst compositions, especially copolymers having segments formed from olefinic monomers and monomers having at least one hydrocarbyl polar functional group.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: March 14, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert T. Stibrany, Donald N. Schulz, Smita Kacker, Abhimanyu O. Patil
  • 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: 6034025
    Abstract: A method for producing a catalyst for the polymerization or copolymerization of olefins is described. The method includes producing a magnesium compound solution by reacting a magnesium halide compound in the mixture of a cyclic ether and two alcohols with an organosilane compound. The magnesium compound solution may be reacted with a titanium halide compound such that precipitated solid components are formed. These precipitated solid components may be reacted with a titanium compound and an electron donor to produce the polymerization catalyst.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: March 7, 2000
    Assignee: Samsung General Chemicals, Co., Ltd.
    Inventors: Chun-Byung Yang, Mie-Ock Kim
  • Patent number: 6034290
    Abstract: Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant metal cation exchanged sulfonate groups, metal cation exchanged carboxylate groups, or metal cation exchanged sulfonate and carboxylate groups, wherein the metal cation may be ligand coordinated, and optionally pendant sulfonic acid groups, carboxylic acid groups, or sulfonic acid and carboxylic acid groups, the PFIEP being entrapped within and highly dispersed throughout a network of metal oxide, a network of silica or a network of metal oxide and silica can be prepared from PFIEP and one or more precursors selected from the group consisting of a metal oxide precursor, a silica precursor, and a metal oxide and silica precursor using an in situ process. Preferred metal cations are Cr, Sn, Al, Fe, Os, Co, Zn, Hg, Li, Na, Cu, Pd or Ru. Such microcomposites have a first set of pores having a pore size diameter ranging from about 0.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 7, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Qun Sun
  • Patent number: 6017842
    Abstract: Catalyst compositions that are highly tolerant of catalyst poisons comprising a catalytic derivative of a Group 4 metallocene metal complex and an Group 13 metal compound according to the formula R.sup.1.sub.2 M"(NR.sup.2.sub.2),wherein R.sup.1 and R.sup.2 independently each occurrence is a hydrocarbyl, silyl, halocarbyl, halohydrocarbyl, hydrocarbyl-substituted silyl, halocarbyl-substituted silyl, or halohydrocarbyl-substituted silyl group, said R.sup.1 and R.sup.2 having from 1 to 30 carbon, silicon, or mixtures of carbon and silicon atoms, andM" is a Group 13 metal,the molar ratio of complex to Group 13 compound being from 1:0.1 to 1:100.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: January 25, 2000
    Assignee: The Dow Chemical Company
    Inventors: Robert K. Rosen, James C. Stevens
  • Patent number: 6015766
    Abstract: The invention relates to catalyst compositions for olefin polymerization comprising metallocene complexes and novel cocatalysts belonging to the group of oligoalkylaluminates with sterically hindered alkyl groups, such as a triphenylmethyl group. These cocatalysts are produced by two alternative synthetic methods, either by reacting methylalumoxane with a sterically hindered carbinol such as triphenyl carbinol; or in two-step processes comprising first reacting trimethylaluminum with said carbinol and then reacting the products of the first step with water. Catalyst systems containing these cocatalysts and metallocene complexes are active in polymerization and copolymerization reactions of ethylene and alpha-olefins.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: January 18, 2000
    Assignee: Mobil Oil Corporation
    Inventor: Yury V Kissin
  • Patent number: 6013594
    Abstract: This invention relates to catalyst supports made by spray drying an emulsion polymerized latex and the novel supported catalysts utilizing these supports. This invention further relates to a method for forming supported catalysts by spray drying a latex of microparticles containing catalyst or catalyst components. The polymizerable monomers used in the latex are e.g. styrenes, vinyl benzenes, vinyl cyclohexane and vinyl cyclohexene and can form homo- or copolymers which may be crosslinked. The catalysts supported include metallocenes as well as Ziegler-Natta catalysts. Processes of polymerizing olefins using such catalysts are also described.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: January 11, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Henry Wu-Hsian Yang, Anthony Nicholas Speca
  • Patent number: 6013596
    Abstract: Double metal cyanide (DMC) catalysts and methods for making them are disclosed. The catalysts comprise a DMC compound, an organic complexing agent, and optionally, a functionalized polymer. The key component is the complexing agent, which comprises a C.sub.3 -C.sub.5 aliphatic alcohol a cyclic, bidentate compound selected from lactams and lactones. Polyether polyols made from the catalysts contain reduced levels of high-molecular-weight (Mn greater than 400,000) components and consistently perform better in urethane applications such as flexible and molded foams.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: January 11, 2000
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Bi Le-Khac, Wei Wang, Mahmoud K. Faraj
  • Patent number: 6010974
    Abstract: An alkylene and/or silylene bridged binuclear metallocene catalyst for styrene polymerization is represented by the following formula (I): ##STR1## where M.sup.1 and M.sup.2 are the same or different transition metal of Group IVb of the Periodic Table; Cp.sup.1 and Cp.sup.2 are the same or different cyclopentadienyl; alkyl, alkoxy, silyl or halogen substituted cyclopentadienyl; indenyl; alkyl, alkoxy, silyl or halogen substituted indenyl; fluorenyl; or alkyl, alkoxy, silyl or halogen substituted fluorenyl, which is capable of .pi.-electron, .eta..sup.5 -bonding with M.sup.1 or M.sup.2 ; each of E.sup.1, E.sup.2 and E.sup.3, independently of one another, is a carbon atom or a silicon atom; m, p and q are integers of 0 to 15 and m+p+q.gtoreq.1; each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, independently of one another, is a hydrogen, an alkyl, an aryl, an alkoxy or a halogen; X is a hydrogen, an alkyl, an alkoxy or a halogen; and n is 3. M.sup.1 and M.sup.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: January 4, 2000
    Assignee: Cheil Industries, Inc.
    Inventors: Hyun-Joon Kim, Yi-yeol Lyu, Dong-ho Lee
  • Patent number: 6005151
    Abstract: The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## wherein a palladium compound of the formula (IV) ##STR2## is used as a catalyst in the preparation of the compounds of the formula (I).
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: December 21, 1999
    Assignee: Aventis
    Inventors: Wolfgang Anton Herrmann, Matthias Beller, Ahmed Tafesh
  • Patent number: 6002035
    Abstract: The present invention relates to a novel fullerene-containing metallocene. Such a fullerene-containing metallocene can be used as the catalyst for preparing olefin polymers.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: December 14, 1999
    Assignee: Chinese Petroleum Corporation
    Inventors: Long Y. Chiang, Taizoon A. Canteenwala
  • Patent number: 6001766
    Abstract: Catalyst compositions for homopolymerization and copolymerization of ethylene which comprise two transition metal compounds, one of them a cyclopentadienyl complex of a transition metal and another a non-metallocene derivative of a transition metal are described. The catalysts are activated by alkylalumoxanes that are soluble in non-aromatic hydrocarbons. Bimetallic catalysts of this invention are suitable for the manufacture of ethylene homopolymers and copolymers with broad bimodal molecular weight distributions. The alkyl alumoxanes have at least one [AR(R)--O--] repeating group in which R is an alkyl group of at least two carbon atoms.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: December 14, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Yury V. Kissin, Robert I. Mink, Thomas E. Nowlin
  • Patent number: 5994255
    Abstract: Catalysts for olefin polymeriztion comprising metal complexes corresponding to the formula: ##STR1## or a dimer, solvated adduct, chelated derivative or mixture thereof, wherein:L is a cyclic group or Y*, that is bound to M by means of a delocalized .pi.-bond, said group containing up to 50 nonhydrogen atoms;L' is a cyclic group or Y* that is bound to M by means of a delocalized .pi.-bond, said group containing up to 50 nonhydrogen atoms;M is a metal of Group 4 of the Periodic Table of the Elements;Z is a covalently bound, divalent substituent of up to 50 non-hydrogen atoms having the formula, --(ER.sub.2).sub.
    Type: Grant
    Filed: July 11, 1998
    Date of Patent: November 30, 1999
    Assignee: The Dow Chemical Company
    Inventors: Peter N. Nickias, Francis J. Timmers, David D. Devore
  • Patent number: 5994256
    Abstract: A process is described for forming a catalyst precursor, for copolymerizing ethylene and an alpha-olefin of 3 to 10 carbon atoms, by preparing a contact mixture of an inert solvent, dibutylmagnesium and tetraalkyl orthosilicate which is free of precipitate and adding silica to the contact mixture to form a slurry to form a supported catalyst precursor. Titanium tetrachloride is then incorporated into the support in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with a trialkylaluminum compound results in a catalyst system which is effective for the production of ethylene copolymers.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: November 30, 1999
    Assignee: Mobil Oil Corporation
    Inventors: James F. Lottes, Robert I. Mink, Thomas E. Nowlin, Yury V. Kissin
  • Patent number: 5990033
    Abstract: Compositions comprising Group 4 metal complexes in the +2 or +3 formal oxidation state and containing an anionic pentadienyl ligand or a substituted derivative thereof and activating cocatalysts are used as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers. Monovinylidene aromatic monomers in particular are polymerized to form highly syndiotactic polymers.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 23, 1999
    Assignee: The Dow Chemical Company
    Inventors: David R. Wilson, Greg F. Schmidt