Patents Examined by Elizabeth Eng
  • Patent number: 10125200
    Abstract: Prepolymerized catalyst component for the polymerization of olefins CH2?CHR, wherein R is hydrogen or a C1-C12 hydrocarbyl group, comprising a solid catalyst component characterized by comprising Mg, Ti halogen and an electron donor (ID) selected from the alkyl esters of aromatic dicarboxylic acids in such an amount that the molar ratio ID/Mg ranges from 0.025 to 0.07 and the Mg/Ti molar ratio is higher than 13, said prepolymerized catalyst component containing an amount of ethylene pre-polymer up to 50 g per g of said solid catalyst component.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: November 13, 2018
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Gianni Collina, Anna Fait, Ofelia Fusco, Giampiero Morini, Lorella Pedriali, Rosa Spoto, Paolo Vincenzi
  • Patent number: 9890231
    Abstract: To provide an industrially useful ?-olefin•((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of ?-olefin•((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An ?-olefin•((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: February 13, 2018
    Assignees: Japan Polyethylene Corporation, Japan Polypropylene Corporation
    Inventors: Minoru Kobayashi, Hideshi Uchino, Kazuhiro Yamamoto, Toshiaki Egashira, Hiroyuki Shimizu, Tetsuya Morioka
  • Patent number: 9670294
    Abstract: A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 6, 2017
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Toshihiko Sugano
  • Patent number: 9670296
    Abstract: Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 6, 2017
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Max P. McDaniel, Qing Yang, Randy S. Muninger, Elizabeth A. Benham, Kathy S. Clear
  • Patent number: 9670298
    Abstract: Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I) Where R1 and R2, independently, are selected from hydrogen and C1-C15 hydrocarbon groups, optionally contain an heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more closed cycles and A is a bivalent bridging group.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: June 6, 2017
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Alessandro Mignogna, Davide Balboni, Antonio Cristofori, Giampiero Morini
  • Patent number: 9637570
    Abstract: Provided herein is a method for operating a slurry polymerization reaction system to reduce, inhibit, and/or prevent fouling in the polymer recovery and separation apparatus, including one or more portions of a high pressure flash tank. The method generally comprises polymerizing a monomer feed in a slurry polymerization reactor in the presence of catalyst and diluent to produce a polymerization effluent; continuously discharging at least a portion of said polymerization effluent from the reactor through a discharge valve; combining a catalyst poison stream with the polymerization effluent downstream of said discharge valve, wherein the catalyst poison stream comprises a catalyst poison that is a gas at standard conditions; and flashing the combination of polymerization effluent and catalyst poison stream in a first flash tank.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: May 2, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Thomas W. Towles
  • Patent number: 9637571
    Abstract: The invention relates to a catalyst system comprising I. a solid reaction product obtained by reaction of: (a) a hydrocarbon solution comprising (1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and (2) an organic oxygen containing titanium compound and (b) a mixture comprising a metal compound having the formula MeRnX3-n wherein X is a halogenide, Me is a metal of Group III of Mendeleev's Periodic System of Chemical Elements, R is a hydrocarbon radical containing 1-10 carbon atoms and 0?n?3 and a silicon compound of formula RmSiCl4-m wherein 0?m?2 and R is a hydrocarbon radical containing 1-10 carbon atoms wherein the molar ratio of metal from (b): titanium from (a) is lower then 1:1 and II. an organoaluminium compound having the formula AlR3 in which R is a hydrocarbon radical containing 1-10 carbon atoms.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: May 2, 2017
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Nicolaas Hendrika Friederichs, Raymond Gerlofsma
  • Patent number: 9617355
    Abstract: The present invention is directed to a process for the production of high density polyethylene by polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an organic compound comprising oxygen and a nitrogen atom which is selected from the group consisting of saturated heterocyclic organic compounds with a five or six membered ring, amino esters and amino alcohols. Such organic compounds allow manufacturing of HDPE with increases molecular weight distribution and increased molecular weight.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 11, 2017
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Vugar O. Aliyev, Ali Saad Headan, Jaiprakash Brijal Sainani
  • Patent number: 9611340
    Abstract: A catalyst system for the polymerization of olefins may include a first solid catalytic component and a second solid catalytic component. The first solid catalytic component may include: a spherical MgCl2-xROH support; a group 4-8 transition metal; and a diether internal electron donor. The second solid catalytic component may include: a spherical MgCl2-xROH support; a group 4-8 transition metal; and a diether internal electron donor. The first solid catalytic component produces a propylene homopolymer having a Xylene Solubles (XS) value of greater than 2 wt %; and the second solid catalytic component produces a propylene homopolymer having a XS value of less than 2 wt %. The second catalytic component may act as an external electron donor during use, and embodiments herein do not require use of any additional external electron donors to control polymerization and reliably vary the properties of the resulting polymer.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: April 4, 2017
    Assignee: Lummus Novolen Technology GmbH
    Inventors: Yvonne Denkwitz, Oliver Schuster, Andreas Winter
  • Patent number: 9593175
    Abstract: Provided are a solid titanium catalyst component for ethylene polymerization which can polymerize ethylene at a high activity and which can provide an ethylene polymer having an excellent particle property, an ethylene polymerization catalyst and an ethylene polymerization method in which the catalyst is used. The solid titanium catalyst component (I) for ethylene polymerization according to the present invention is obtained by bringing a liquid magnesium compound (A) including a magnesium compound, an electron donor (a) having 1 to 5 carbon atoms and an electron donor (b) having 6 to 30 carbon atoms into contact with a liquid titanium compound (C) under the presence of an electron donor (B) and includes titanium, magnesium and a halogen. The ethylene polymerization catalyst of the present invention includes the component (I) and an organic metal compound catalyst component (II).
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 14, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kazuhisa Matsunaga, Hideki Yamamoto, Kunio Yamamoto, Tetsunori Shinozaki, Kiyoshi Takahashi
  • Patent number: 9574018
    Abstract: The present invention relates to a method for consecutively producing at least two different polyethylene resins in one slurry loop reactor, comprising producing a first polyethylene resin in the presence of a Ziegler-Natta and/or a Chromium catalyst, and consecutively producing a second polyethylene resin in the presence of a metallocene catalyst, characterized in that the ratio of the melt flow index of the first produced polyethylene resin to the melt flow index of the second produced polyethylene resin is at least 0.3.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: February 21, 2017
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Peter Stevens, Franky Fant, Daan Dewachter, Alain Brusselle
  • Patent number: 9562119
    Abstract: The present invention relates to solid catalyst components comprising a reaction product of a titanium compound, a magnesium compound, an alcohol, an aluminum alkoxide, a siloxane mixture, and a maleate derivative; and catalyst systems comprising the solid catalyst components and organoaluminum compounds. The present invention also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing ethylene using the catalyst systems.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: February 7, 2017
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Main Chang, Thomas Garoff
  • Patent number: 9556295
    Abstract: Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 31, 2017
    Assignee: Borealis AG
    Inventors: Irfan Saeed, Esa Kokko, Paivi Waldvogel, Marja Mustonen, Thomas Garoff
  • Patent number: 9512244
    Abstract: The invention relates to a process for preparing a polymerization catalyst component wherein a solid compound with formula Mg(OR1)xCl2-x wherein x is larger than 0 and smaller than 2, and each R1, independently, represents an alkyl group, said compound being obtained by reacting a Grignard compound with an alkoxy- or aryloxy-containing silane compound, is contacted with at least one activating compound selected from the group formed by internal electron donors and compounds of formula M(OR2)v-w(R3)w, wherein M can be Ti, Zr, Hf, Al or Si, each R2 and R3, independently, represent an alkyl, alkenyl or aryl group, v is the valency of M and w is smaller than v, in the presence of an inert dispersant to give an intermediate reaction product, and wherein the intermediate reaction product is contacted with a halogen-containing Ti-compound. A catalyst system comprising said component shows improved performance in olefin polymerization.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: December 6, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Yves Johann Elizabeth Ramjoie, Mark Vlaar, Nicolaas Hendrika Friederichs, Sergei Andreevich Sergeev, Vladimir Aleksandrovich Zakharov, Gennadii Dimitrievich Bukatov, Mansour Taftaf, Atieh Aburaqabah
  • Patent number: 9505855
    Abstract: The present invention relates to catalysts systems for the polymerization of olefins CH2?CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, and halogen (B) an aluminum alkyl compound and (C) a mono or dihalogenated hydrocarbon compound. Said catalyst systems have improved polymerization activity.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: November 29, 2016
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Masaki Fushimi, Gerhardus Meier, Maclovio Herrera Salinas, Martin Schneider, Giampiero Morini
  • Patent number: 9505856
    Abstract: Methods for preparing a fluorided chromium catalyst can include a step of calcining a supported chromium catalyst at a peak calcining temperature to produce a calcined supported chromium catalyst, followed by contacting the calcined supported chromium catalyst at a peak fluoriding temperature with a vapor comprising a fluorine-containing compound to produce the fluorided chromium catalyst. The peak fluoriding temperature can be at least 50° C. less, and often from 200° C. to 500° C. less, than the peak calcining temperature. Polymers produced using the fluorided chromium catalyst can have a beneficial combination of higher melt index, narrower molecular weight distribution, and lower long chain branch content.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 29, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Eric D. Schwerdtfeger, Kathy S. Clear, Max P. McDaniel
  • Patent number: 9487604
    Abstract: The present invention relates to preparing high 1,4-trans-polybutadiene by polymerizing 1,3-butadiene or a butadiene derivative in a non-polar solvent in the presence of a catalyst system comprising a novel bimetallic cobalt-aluminum adduct, which makes it possible to prevent gel formation, control the molecular weight of the trans-polybutadiene and increase the trans content of the trans-polybutadiene. The catalyst system comprising the novel cobalt-aluminum adduct has a high oxidation state and structural stability, and the reactivity of the catalyst is controlled using novel activation systems comprising various allyloxy aluminum compounds.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: November 8, 2016
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Hanbaek Lee, Gwanghoon Kwag, Hoochae Kim, Seunghyun Do, Bunyeoul Lee, Jihae Park, Ahreum Kim
  • Patent number: 9469704
    Abstract: The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 18, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Margaret May-Som Wu
  • Patent number: 9447200
    Abstract: Provided is a method of producing a stabilized polymer in which inhibition of polymerization of a monomer having an ethylenically unsaturated bond is suppressed even when a specific phenolic antioxidant is added before or during the polymerization of the monomer.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: September 20, 2016
    Assignee: ADEKA CORPORATION
    Inventors: Naoshi Kawamoto, Tsuyoshi Urushihara, Kohei Okamoto, Tetsuya Seguchi
  • Patent number: 9447206
    Abstract: The present invention relates to a process for the preparation of ethylene polymers using a number of reactors arranged in series comprising the steps in which a) ethylene, a diluent, a catalyst, a co-catalyst and optionally comonomers and hydrogen are introduced into a first reactor, b) polymerization of ethylene and optionally comonomers is carried out in the reaction mixture of said first reactor to make ethylene polymers, c) reaction mixture is discharged from said first reactor, d) said reaction mixture and fresh ethylene and optionally comonomers and hydrogen are introduced into the consecutive reactor to make additional ethylene polymers, e) said reaction mixture is discharged from said consecutive reactor and introduced into the further consecutive reactor, if any, with fresh ethylene and optionally comonomers and hydrogen to make additional ethylene polymers, steps c) and d) are repeated until the last reactor of the series, f) reaction mixture is discharged from last reactor of the series and ethyl
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: September 20, 2016
    Assignee: Total Research & Technology Feluy
    Inventors: Mieke Dams, Daniel Siraux