Group Viii Transition Metal (fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) Patents (Class 526/93)
  • Patent number: 10377841
    Abstract: A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including a majority of 2,2-dimethylpropane under polymerizable conditions to produce a polyolefin polymer is provided.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: August 13, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David J. Sandell, Marc L. De Chellis, Fred D. Ehrman
  • Patent number: 8729191
    Abstract: An embodiment of the present invention allows for production, with a high productivity, of a water-absorbent resin including an improved relationship between absorption capacity and water-soluble polymer which are conflicting properties of the water-absorbent resin, being easily controlled for polymerization reaction, being of no odor, being less colored, and being of high absorption properties. In one embodiment of the present invention, acrylic acid composition is neutralized with a basic composition including an iron content of 0.2 to 5 ppm by weight (relative to a basic compound exclusive of a solvent); and then polymerizing a resultant neutralized product, the acrylic acid composition including: (i) a methoxyphenol content of 10 to 200 ppm by weight relative to the weight of acrylic acid; and (ii) at least one compound content of which is 0 to 10 ppm by weight relative to the weight of acrylic acid, the compound being selected from the group consisting of protoanemonin and furfural.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 20, 2014
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takaaki Kawano, Hirotama Fujimaru, Kunihiko Ishizaki, Katsuyuki Wada
  • Publication number: 20140058052
    Abstract: The invention pertains to a process for manufacturing a fluoroelastomer [fluoroelastomer (A)] having a heat of fusion of less than 5 J/g as measured by ASTM D-3418-08, said method comprising emulsion polymerizing vinylidene fluoride (VDF) in the presence of at least one additional fluorinated monomer, in an aqueous polymerization medium, said method comprising polymerizing VDF and said additional fluorinated monomer(s) in the presence of a redox radical initiator system comprising: —at least one organic oxidizing agent [agent (O)]; —at least one organic reducing agent [agent (R)]; wherein agent (O) is fed to said polymerization medium separately from agent (R), so that agent (O) comes in contact with agent (R) exclusively in said polymerization medium comprising VDF and optional additional monomer(s), to fluoroelastomers having low amount of chain defects and low amount of polar end groups, notably obtainable from said process, and to curable compositions therefrom.
    Type: Application
    Filed: May 2, 2012
    Publication date: February 27, 2014
    Applicant: Solvay Specialty Polymers Italy S.p.A.
    Inventors: Liubov Chernysheva, Bradley Lane Kent, Giovanni Comino, Valeriy Kapelyushko
  • Publication number: 20120296055
    Abstract: Disclosed is an improved process for production of relatively gel free high cis-1,4-polybutadiene by polymerizing 1,3-butadiene monomer in presence of organocobalt-alkyl aluminum catalysts and a cycloalkane solvent system, the improvement comprising conducting said process in a predetermined sequence avoiding alkyl or alkoxy substituted benzene as polymerization regulator.
    Type: Application
    Filed: January 14, 2011
    Publication date: November 22, 2012
    Applicant: RELIANCE INDUSTRIES LIMITED
    Inventors: Maiti Madhuchhanda, Jasra Rakshvir
  • Publication number: 20120142872
    Abstract: The present invention relates to a process for polymerising (hetero)aromatic compounds under formation of aryl-aryl C—C couplings for preparing conjugated polymers with high molecular weight and high regioregularity, and to novel polymers obtainable by this process. The invention further relates to the use of the novel polymers as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors (FETs), thin film transistors (TFT), electroluminescent, photovoltaic and sensor devices.
    Type: Application
    Filed: May 18, 2010
    Publication date: June 7, 2012
    Applicant: BASF SE
    Inventors: Bernd Lamatsch, Achim Lamatsch, Pascal Hayoz, Mathias Dueggeli, Martin Elbs, Olivier Frederic Aebischer
  • Patent number: 8182975
    Abstract: A positive resist composition, includes: (A) a resin that has a group having absorption at 248 nm at a main chain terminal of the resin (A), and a pattern forming method uses the composition.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: May 22, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Shuji Hirano
  • Publication number: 20120035316
    Abstract: Process for preparing a macromonomer using free radical-initiated aqueous emulsion polymerisation in a polymerisation reactor of at least one olefinically unsaturated monomer, which process employs a hydrophobic Co chelate complex as a CTA, a stabilising substance(s) for the emulsion polymerisation process and a monomer feed stage MF; wherein an aqueous pre-emulsified mixture A, comprising at least part of the Co chelate(s) employed, at least part of the stabilising substance(s) employed, and (i) a non-polymerisable organic solvent(s) and/or (ii) a polymerisable monomer(s) in unpolymerised or at least partially polymerised form, is contacted in the reactor with monomer(s) of feed stage MF at the beginning of and/or during the course of feed stage MF; and wherein in mixture A the weight ratio of (i) and/or (ii) to the stabilising substance(s) is in the range of from 10/1 to 1/10.
    Type: Application
    Filed: October 18, 2011
    Publication date: February 9, 2012
    Applicant: DSM IP Assets B.V.
    Inventors: Saskia Carolien VAN DER SLOT, Tijs Nabuurs, Alfred Jean Paul BÜCKMANN, Gerardus Cornelis Overbeek
  • Patent number: 8013085
    Abstract: Process for preparing an aqueous polymer dispersion by polymerizing at least one ethylenically unsaturated monomer B in an aqueous medium in the presence of polymer particles A and at least one dispersant.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: September 6, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Mubarik Mahmood Chowdhry, Dieter Distler, Reinhold J. Leyrer
  • Publication number: 20110190441
    Abstract: Through the use of an improved iron-based redox system it is possible to prepare special new, optionally hydrogenated, nitrile rubbers which feature a more uniform monomer distribution and a lower fraction of long-chain branches and hence are distinguished by enhanced flow properties at the same time as very good properties on processing.
    Type: Application
    Filed: October 15, 2010
    Publication date: August 4, 2011
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Sven Brandau, Hans Magg, Michael Klimpel
  • Publication number: 20110105703
    Abstract: The invention relates to a novel iron complex bearing a cyclic amine as ligand; and a process for the production of polymers by polymerizing a radical-polymerizable monomer in the presence of the iron complex and a radical generator. The invention aims at providing a process by which a polymer having a chemically convertible functional group at the end can be produced from a radical-polymerizable monomer and which permits the production of a block copolymer and a process for recovering, after polymerization, an iron complex into a solvent at a high recovery ratio. The aim can be solved by providing a novel iron complex, a process for producing a polymer in the presence of a radical polymerization initiator by using the iron complex as the polymerization catalyst, a process for the production of a block copolymer which is subsequent to the polymerization for producing the above polymer, and a process for recovering the iron complex easily and simply.
    Type: Application
    Filed: March 10, 2008
    Publication date: May 5, 2011
    Applicant: DIC Corporatio
    Inventors: Hidetomo Kai, Akane Sasamoto, Hitoshi Hayakawa
  • Patent number: 7863394
    Abstract: A method of polymerizing poly(cyclic)olefin monomers encompassing (a) combining a monomer composition containing the poly(cyclic)olefin monomers, a non-olefinic chain transfer agent and an activator compound to form a mixture; (b) heating the mixture; and (c) adding a polymerization catalyst containing Ni and/or Pd. The non-olefinic chain transfer agent includes one or more compounds selected from H2, alkylsilanes, alkylalkoxysilanes, alkylgermanes, alkylalkoxygermanes, alkylstannanes, and alkylalkoxystannanes. The activator is characterized as having an active hydrogen with a pKa of at least 5. The resulting poly(cyclic)olefin polymers can be used in photoresist compositions.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: January 4, 2011
    Assignee: Promerus LLC
    Inventors: Larry F. Rhodes, Dennis A. Barnes, Andrew Bell, Brian K. Bennett, Chun Chang, John-Henry Lipian, Xiaoming Wu
  • Patent number: 7847041
    Abstract: Cobalt-catalyzed asymmetric cyclopropanation of electron-deficient olefins.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: December 7, 2010
    Assignee: University of South Florida
    Inventor: X. Peter Zhang
  • Publication number: 20100009846
    Abstract: An object of the present invention is to provide a particle-shaped water absorbing agent having a remarkably improved surface color and excellent water-absorbing properties (better water absorption capacity, and lower water soluble content and residual monomer content) at the same time. In order to attain the object, a particle-shaped water absorbing agent according to the present invention is a particle-shaped water absorbing agent whose main component is a polyacrylic acid and/or a salt thereof, the particle-shaped water absorbing agent having a surface color of Hunter b value in a range of ?5 to 10, and having a cross-linking absorption property index (CPI) in a range of 1 to 100, the CPI defined by the following two equations: GEX=(GVs+17)/Ln (water soluble content)??Equation 1; CPI=(GEX/residual monomer content)×100??Equation 3 where GVs is gel volume in saline, Ln (water soluble content) is a logarithm natural of water soluble content.
    Type: Application
    Filed: February 4, 2008
    Publication date: January 14, 2010
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Hiroyuki Ikeuchi, Hirotama Fujimaru, Makoto Nagasawa, Kazuhiko Sakamoto, Shigeru Sakamoto, Kazushi Torii, Ryoko Tahara
  • Patent number: 7566760
    Abstract: The invention relates to a method for the production of aqueous polymer dispersions, by the polymerisation of one or more olefins in aqueous media in the presence of dispersing agents and optionally organic solvents, characterised in that the polymerisation of the olefin(s) is catalysed by means of one or more complex compounds of general formula (I), where at least one of the groups R1 to R9 must be in the form of a group of the following general formula (II) where Z=an electron-withdrawing group and n=a whole number from 1 to 5.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: July 28, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Mubarik Mahmood Chowdhry, Markus Schmid, Peter Preishuber-Pfluegl, Xavier Sava, Horst Weiss, Stefan Mecking, Martin Zuideveld, Florian M. Bauers
  • Patent number: 7462673
    Abstract: Process for preparing an aqueous polymer dispersion by polymerization of at least one olefinically unsaturated compound in an aqueous medium in the presence of at least one dispersant and a solid polymerization catalyst.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: December 9, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Mubarik Mahmood Chowdhry, Peter Preishuber-Pfluegl, Xavier Sava, Ekkehard Lindner, Mahmoud Sunjuk, Peter Wegner
  • Publication number: 20080182915
    Abstract: Process for the emulsion polymerization of one or more olefins by preparing a catalyst by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical; and subsequently (co)polymerizing said one or more olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
    Type: Application
    Filed: April 1, 2008
    Publication date: July 31, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Mubarik Mahmood Chowdhry, Xavier Sava, Monica Haag, Jacob Wildeson, Stefan Mecking, Ludmila Kolb
  • Patent number: 7332550
    Abstract: This present invention is directed towards the identification or design, preparation, and use of suitable transition metal complexes for use as catalysts. The transition metal complexes may comprise heterodonor ligands. The present invention is also directed toward a method of determining the suitability of a transition metal complex for use in a catalytic reaction, such as, but not limited to, atom transfer radical polymerization (“ATRP”), atom transfer radical addition (“ATRA”), atom transfer radical cyclization (“ATRC”), and other catalytic redox reactions. The method assists in the approximate determination of the fundamental properties of the transition metal complex in a reaction media, such as, but not limited to, solubility, redox potential, stability towards acidic, basic, or ionic species, conditional radically transferable atom phylicity, and propensity toward disproportionation and therefore, the suitability of the complex to be used as a catalyst in the reaction media.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 19, 2008
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Nicolay Tsarevsky
  • Patent number: 7329758
    Abstract: The present invention relates to novel metathesis catalysts with an imidazolidine-based ligand and to methods for making and using the same.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: February 12, 2008
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Matthias Scholl
  • Patent number: 7129292
    Abstract: A process for emulsion polymerizing one or more olefins involves reacting it/them with at least one complex compound of the formula Ia or b where M is a transition metal from groups 7 to 10 of the Periodic Table of the Elements and is preferably Ni in aqueous dispersion and at least one radical R1 to R3 and optionally one radical R4 to R9 contains a hydrophilic group X, selection being made from —SO3?, —O—PO32?, NH(R15)2+, N(R15)3+ or —(OCH2CH2)nOH, where n is an integer between 1 and 15. For the process of the invention it is optional to use an activator such as, for example, olefin complexes of rhodium or of nickel.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: October 31, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Marc Oliver Kristen, Lambertus Manders, Stefan Mecking, Florian M. Bauers, Rolf Mülhaupt
  • Patent number: 7009065
    Abstract: The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 7, 2006
    Assignee: Degussa AG
    Inventors: Paul Knochel, Matthias Lotz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Juan Jose Almena Perea
  • Patent number: 6964999
    Abstract: A vinyl polymer having at least one terminal group of the general formula (1) per molecule; —OC(O)C(R)?CH2??(1) wherein R represents hydrogen or an organic group containing 1 to 20 carbon atoms; a curable composition containing said polymer; an aqueous emulsion containing either said polymer or said curable composition; a pressure sensitive adhesive composition and a pressure sensitive adhesive each comprising said curable composition or aqueous emulsion.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: November 15, 2005
    Assignee: Kaneka Corporation
    Inventors: Yoshiki Nakagawa, Masayuki Fujita, Kenichi Kitano
  • Patent number: 6916891
    Abstract: Microspheroidal particles, suitable as fluidized bed catalyst supports, are prepared by incorporating a portion of small, preferably recycled, particles into a slurry of inorganic oxide sol and inorganic particles which is spray dried to form microspheroidal particles.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 12, 2005
    Assignee: The Standard Oil Company
    Inventors: George F. Salem, Robert J. Zagata
  • Patent number: 6897272
    Abstract: Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: May 24, 2005
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Maurice S. Brookhart, Lynda Kaye Johnson, Samuel David Arthur, Stephan James McLain
  • Patent number: 6894111
    Abstract: The invention provides generally a new type of organic electrochromic Near Infrared (NIR)-active materials capable of absorbing and attenuating the light in the NIR region around 1550 nm and forming thin films on electrodes for variable optical attenuator (VOA) applications. They have utility in planar VOA devices. The materials are ruthenium complexes. Unsymmetrical complexes having two different substituents are disclosed, where one substituent is more electron-donating than the other. Complexes which are dimers or trimers (symmetrical or unsymmetrical) are disclosed, as are polymeric complexes. Crosslinked polymeric complex films are also disclosed.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 17, 2005
    Assignee: Twlinks Inc.
    Inventor: Zhi Yuan Wang
  • Patent number: 6887956
    Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: May 3, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: Adriaan A. van der Huizen, Jean-Marc Potlet, Alain Sabatier, Patrick Le Roy
  • Patent number: 6888018
    Abstract: The present invention provides an organometallic compound represented by the general formula (1) or (2), process for producing the same, metathesis reaction catalyst containing the same, polymerization process using the same catalyst and polymer produced by the same polymerization process:
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 3, 2005
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Takeharu Morita, Hiroshi Hiraike, Nobuhiro Goto, Masafumi Nakatani, Fumiyuki Ozawa, Hiroyuki Katayama
  • Patent number: 6858763
    Abstract: The present invention relates to a process for preparing an elastomeric ethylene-hexafluoropropylene copolymer with excellent vulcanization properties, which comprises emulsion polymerizing ethylene, hexafluoropropylene and when in demand, a monomer copolymerizable therewith in a aqueous medium at a low temperature of ?20° C. to 40° C. using a radical polymerization initiator.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: February 22, 2005
    Assignee: Daikin Industries, Ltd.
    Inventors: Mitsuo Tsukamoto, Masao Otsuka, Mitsuhiro Otani, Tatsuya Morikawa, Hideya Saito
  • Patent number: 6800699
    Abstract: Process for the production of aqueous polymer dispersions by reaction of one or more olefinically unsaturated compounds in aqueous medium in the presence of a complex compound which possesses the structural element Y—M—E, E standing for nitrogen, M for a transition metal of groups 7 to 10 of the periodic system of the elements and Y for oxygen, sulfur, nitrogen or phosphorus, and which possesses no hydrophilic groups in its ligand system.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Mubarik Mahmood Chowdhry, Marc Oliver Kristen, Stefan Mecking, Florian M. Bauers
  • Patent number: 6747102
    Abstract: In a process for the free radical-initiated aqueous emulsion polymerization for the preparation of an aqueous polymer dispersion, ethylenically unsaturated monomers are polymerized by means of a free radical polymerization initiator in the presence of organometallic compounds having a controlling effect.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: June 8, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: David Christie, Jerome Claverie, Saba Kanagasabapathy
  • Patent number: 6737483
    Abstract: The invention concerns a method for polymerising at least one olefin in the presence of at least a catalyst comprising a sequence E—M—X wherein E represents an oxygen or sulphur atom; M represents a nickel or palladium or platinum atom; X represents a phosphorus, arsenic or antimony atom in a medium comprising a continuous liquid phase containing more than 30 wt. % of water. The method can result in a polymer latex of at least one olefin.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: May 18, 2004
    Inventors: Atanas Tomov, Roger Spitz, Thierry Saudemont, Xavier Drujon
  • Patent number: 6713557
    Abstract: A process for preparing an aqueous emulsion polymer including providing at least one ethylenically unsaturated monomer and a free radical redox initiator system under emulsion polymerization conditions, the redox initiator system including an oxidant; a reductant and a metal promoter complex, and effecting the polymerization of at least some of the ethylenically unsaturated monomer is provided. Also provided is a process for reducing the residual ethylenically unsaturated monomer content of an aqueous emulsion polymer.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: March 30, 2004
    Assignee: Rohm and Haas Company
    Inventors: Steven Michael Baxter, Patrick Albert Clark
  • Patent number: 6696518
    Abstract: The present invention relates to a process for hydrogenating ethylenically unsaturated double bonds in polymers P by reacting an aqueous dispersion of at least one polymer P with hydrogen in the presence of at least one hydrogenation catalyst comprising at least one transition metal selected from rhodium and/or ruthenium and at least one nonionic phosphorus compound capable of forming a coordinative compound with the transition metal, which comprises incorporating the hydrogenation catalyst into the aqueous dispersion of the polymer P without adding a solvent. The present invention also relates to the aqueous dispersions of the hydrogenated polymers P obtainable by this process and to coating compositions comprising such dispersions.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: February 24, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Dersch, Heiko Maas, Volker Schädler
  • Patent number: 6683146
    Abstract: A process for producing an acrylic polymer capable of providing a polymer controlled in molecular weight and free of colorization, and a heterogeneous polymerization catalyst used in the process for producing an acrylic polymer are provided. The heterogeneous polymerization catalyst contains (A) a radical generating substance, (B) a metallic halide containing a metallic element selected from the group consisting of the Group 4 to Group 12 elements and a halogen element selected from the group consisting of chlorine, bromine and iodine, and (C) a carrier carrying a ligand capable of forming a coordination bond with the metallic halide (B). The process for producing an acrylic polymer contains a step of polymerizing a monomer containing at least an acrylate and/or a methacrylate in the presence of the heterogeneous polymerization catalyst.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: January 27, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Satoshi Hiraoka
  • Patent number: 6664347
    Abstract: Modified polybutadiene having a high-cis and low-trans structure with a moderate 1,2-structure content and exhibiting improved characteristics such as cold flow properties, which is obtained by modifying starting polybutadiene having a Tcp/ML1+4 ratio (Tcp: 5% toluene solution viscosity at 25° C.ML1+4: Mooney viscosity at 100° C.) of 2.5 or more in the presence of a transition metal catalyst.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: December 16, 2003
    Assignee: Ube Industries, Ltd.
    Inventors: Michinori Suzuki, Masato Murakami
  • Publication number: 20030212218
    Abstract: This invention relates to a process for controlling the architecture of copolymers of at least two unsaturated monomers, made by free-radical polymerization in the presence of a cobalt-containing chain transfer agent, including the control of molecular weight, degree of branching and vinyl end group termination, by varying at least one of the variables of molar ratio of monomers, their relative chain transfer constants, polymerization temperature and degree of conversion and amount of cobalt chain transfer agent; and polymers made thereby.
    Type: Application
    Filed: April 18, 2003
    Publication date: November 13, 2003
    Inventors: Graeme Moad, Ezio Rizzardo, Catherin Louise Moad, Steven Dale Ittel, Lech Wilczek, Alexei A. Gridnev
  • Patent number: 6635725
    Abstract: A method for producing an ethylene-vinyl acetate copolymer aqueous emulsion is provided which uses a redox catalyst comprising a transition metal salt and an erysorbic acid and/or an ascorbic acid, as the reducing agent thereof, and 1.8 to 10 mol of hydrogen peroxide, as an oxidizing agent thereof, per one mol of the erysorbic acid and the ascorbic acid, and by this method, an ethylene-vinyl acetate copolymer aqueous emulsion which causes no generation of formalin and in which discoloration is suppressed can be obtained.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: October 21, 2003
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventor: Tomoaki Sata
  • Patent number: 6632908
    Abstract: The present invention is directed to (meth)acrylate compositions useful for bonding substrates including metals, plastics, and glass to similar or different substrates, in particular, low energy surfaces. The invention also provides an initiator system for (meth)acrylate based adhesives; a kit for bonding substrates, at least one of which includes a low energy surface; a resultant bonded assembly; and a method of bonding low energy substrates. A (meth)acrylate composition within the present invention includes a (meth)acrylate component and an initiator system including an organometallic compound, a peroxy compound, an aziridine functionalized compound, and a compound having an acid functional group.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: October 14, 2003
    Assignee: Henkel Loctite Corporation
    Inventor: Eerik Maandi
  • Patent number: 6602960
    Abstract: A polymerization process comprising the steps of admixing a halogen-containing compound, monomer, and a cobalt complex.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: August 5, 2003
    Assignee: The University of Akron
    Inventors: H. James Harwood, Anne K. Shim
  • Patent number: 6573345
    Abstract: The present invention is directed to processes of polymerizing olefin monomers and copolymerizing olefin monomer(s) with functionalized alpha-olefin monomers in the presence of certain late transition metal pyrrolaldimine chelates, especially bidenate or in the presence of a combination of a transition metal in its zero valence and a pyrrolaldimine represented by the formula: wherein each R1, R2, R3, R4, R5, R6, M and L are defined in the specification herein below.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: June 3, 2003
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Stefan K. Friedrich, Todd Ross Younkin, Robert Howard Grubbs, Chunming Wang, Robert Tan Li
  • Publication number: 20030100625
    Abstract: Microwave-assisted Heck arylations are disclosed using various dispersed Pd systems including the novel Pd/MgO and Pd/SiO2—Al2O3 catalyst.
    Type: Application
    Filed: October 12, 2001
    Publication date: May 29, 2003
    Inventors: S. Muthukumaru Pillai, A. Wali, Sheo Satish
  • Patent number: 6566457
    Abstract: The invention relates to a process for preparing graft rubbers built up from at least one graft core and from at least one graft shell, comprising a) preparing an aqueous dispersion of at least one elastomeric polymer, b) then, to obtain the at least one graft core, selectively hydrogenating ethylenically unsaturated double bonds in the elastomeric polymer, using hydrogen, in the presence of at least one hydrogenation catalyst, where the aqueous dispersion of the elastomeric polymer comprises not more than 20% by volume of an organic solvent, and c) grafting onto the graft core at least one graft shell, and also to the corresponding graft rubbers.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: May 20, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Barghoorn, Volker Schädler, Heiko Maas, Norbert Niessner
  • Publication number: 20030045657
    Abstract: Modified polybutadiene having a high-cis and low-trans structure with a moderate 1,2-structure content and exhibiting improved characteristics such as cold flow properties, which is obtained by modifying starting polybutadiene having a Tcp/ML1+4 ratio (Tcp: 5% toluene solution viscosity at 25° C.ML1+4: Mooney viscosity at 100° C.) of 2.5 or more in the presence of a transition metal catalyst.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 6, 2003
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Michinori Suzuki, Masato Murakami
  • Patent number: 6515084
    Abstract: Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed. Also disclosed are methods of making the carbene compounds. The carbene compounds are of the formula where M is Os or Ru; R1 is hydrogen; R is selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, and substituted or unsubstituted aryl; X and X1 are independently selected from any anionic ligand; and L and L1 are independently selected from any neutral electron donor. The ruthenium and osmium carbene compounds of the present invention may be synthesized using diazo compounds, by neutral electron donor ligand exchange, by cross metathesis, using acetylene, using cumulated olefins, and in a one-pot method using diazo compounds and neutral electron donors.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: February 4, 2003
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Peter Schwab, Sonbinh T. Nguyen
  • Patent number: 6455646
    Abstract: Vinyl chloride or a monomer mixture containing it transported over a long distance or stored for a long period usually contains a polymerization inhibitor and Fe ions. If this kind of vinyl chloride or monomer mixture is polymerized, stirring torque during the polymerization increases, and heat removal by the cooling jacket of a polymerization vessel tends to become insufficient, making the polymer quality subject to bad influences. In the present invention, a hydroxycarboxylic acid compound is added to the polymerization mixture in an amount of 50-1000 ppm relative to the monomer or monomer mixture. As a result, an increase in stirring torque during polymerization is suppressed, and heat removal by the cooling jacket of the polymerization vessel can be performed effectively, making it possible to obtain vinyl chloride of good quality.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: September 24, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro Usuki, Minoru Shigemitsu, Tadashi Amano
  • Publication number: 20020132942
    Abstract: A humidification system (A) for humidifying a dry hydrocarbon stream includes a column (10) which defines an interior cavity (20). The cavity is partially filled with a bed (12) of a packing material (40) and a layer of water (20), leaving a headspace above the water. An inlet (52) adjacent a lower end of the cavity receives a dry hydrocarbon stream which is broken up by the packing material and dissolves water as it passes therethrough. Entrained water droplets fall out of the wet blend in a disengagement zone (70) above the water layer leaving the hydrocarbon stream humidified yet substantially free of liquid water in an upper region (72) of the column.
    Type: Application
    Filed: March 14, 2001
    Publication date: September 19, 2002
    Inventors: David M. Roggeman, James Oziomek, Timothy L. Tartamella
  • Patent number: 6432475
    Abstract: A pressure-sensitive adhesive composition having well-balanced pressure-sensitive adhesive force and cohesive force without causing any safety or economy problems, a process for the preparation of the same and pressure-sensitive adhesive sheets using the same are disclosed. The pressure-sensitive adhesive composition comprises a crosslinked polymer obtained by crosslinking a block copolymer comprising at least two of a styrene-based polymer block A and an acrylic polymer block B having a structural unit represented by the general formula (1):—[CH2═C(R1)COOR2]— wherein R1 represents a hydrogen atom or methyl group, and R2 represents a C2-14 alkyl group, bonded each other, such as A-B or B-A type block copolymer and A-B-A type block copolymer.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: August 13, 2002
    Assignee: Nitto Denko Corporation
    Inventors: Michiharu Yamamoto, Yutaka Moroishi, Kenichi Okada, Fumiko Kamifuji, Tomoko Doi
  • Publication number: 20020099156
    Abstract: A process for preparing an aqueous emulsion polymer including providing at least one ethylenically unsaturated monomer and a free radical redox initiator system under emulsion polymerization conditions, the redox initiator system including an oxidant; a reductant and a metal promoter complex, and effecting the polymerization of at least some of the ethylenically unsaturated monomer is provided. Also provided is a process for reducing the residual ethylenically unsaturated monomer content of an aqueous emulsion polymer.
    Type: Application
    Filed: November 20, 2001
    Publication date: July 25, 2002
    Inventors: Steven Michael Baxter, Patrick Albert Clark
  • Publication number: 20020099153
    Abstract: Vinyl chloride or a monomer mixture containing it transported over a long distance or stored for a long period usually contains a polymerization inhibitor and Fe ions. If this kind of vinyl chloride or monomer mixture is polymerized, stirring torque during the polymerization increases, and heat removal by the cooling jacket of a polymerization vessel tends to become insufficient, making the polymer quality subject to bad influences. In the present invention, a hydroxycarboxylic acid compound is added to the polymerization mixture in an amount of 50-1000 ppm relative to the monomer or monomer mixture. As a result, an increase in stirring torque during polymerization is suppressed, and heat removal by the cooling jacket of the polymerization vessel can be performed effectively, making it possible to obtain vinyl chloride of good quality.
    Type: Application
    Filed: November 20, 2001
    Publication date: July 25, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro Usuki, Minoru Shigemitsu, Tadashi Amano
  • Patent number: 6399721
    Abstract: Conventional SBR does not have the soft and smooth chew characteristics needed in chewing gum base for soft chew applications. Conventional SBR typically also has undesirable odor and taste characteristics that have generally limited its use in chewing gum base formulations. However, there is a desire to use SBR in such applications because it is relatively inexpensive. The present invention also specifically discloses a process for synthesizing styrene-butadiene rubber that is particularly useful in manufacturing chewing gum base for soft chew applications which comprises copolymerizing about 1 phm to about 12 phm styrene and about 88 phm to about 99 phm of 1,3-butadiene in an aqueous emulsion, wherein said copolymerization is conducted at a temperature which is within the range of about 1° C. to about 20° C.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: June 4, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gerald Owen Schulz, Valerie Anne Hill
  • Patent number: 6395846
    Abstract: The invention relates to high-activity catalysts for olefin polymerization, to efficient methods for producing them, and to efficient methods of using the catalysts for producing high-quality polyolefins. The olefin polymerization with the catalysts does not require a large amount of an organic aluminium compound, and the residual metal in the polyolefins produced is much reduced. The catalysts are characterized by containing a product as prepared by contacting any of clay, a clay mineral and an ion-exchanging layered compound, an organic silane compound, and water with each other, or by containing a silane compound-processed clay.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: May 28, 2002
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Haruhito Sato, Masahiko Kuramoto