Adding Polymerization Inhibitor Or Terminator, E.g., Short-stopper, Etc. Patents (Class 526/82)
  • Patent number: 10822433
    Abstract: The invention relates to a process for transitioning from a first continuous polymerization in a gas phase reactor conducted in the presence of a metallocene catalyst to a second polymerization conducted in the presence of a Ziegler-Natta catalyst in the gas phase reactor wherein the metallocene catalyst and the Ziegler-Natta catalysts are incompatible, the process comprising: (a) discontinuing the introduction of the metallocene catalyst into the gas phase reactor; (b) introducing an effective amount of cyclohexylamine into the reactor to at least partially deactivate the metallocene catalyst; (c) introducing an organometallic compound into the reactor and reacting the organometallic compound with cyclohexylamine; (d) degas the gas composition of the reactor and build up a new composition inside the reactor for the second polymerization with the Ziegler-Natta catalyst (e) introducing the Ziegler-Natta catalyst into the reactor.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: November 3, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Yahya Banat, Abdulaziz Hamad Al-Humydi, Said Fellahi
  • Patent number: 10675862
    Abstract: An aqueous sacrificial coating composition for an image transfer member in an aqueous ink imaging system is provided. The sacrificial coating composition may include at least one polymer, at least one selected from (i) at least one chain extender, or (ii) a reactive elastomeric latex, wherein the at least one chain extender comprises a species capable of linking linear chains or chain segments of the reactive elastomeric latex, at least one hygroscopic plasticizer, and at least one surfactant.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 9, 2020
    Assignee: XEROX CORPORATION
    Inventors: Guiqin Song, Marcel P. Breton, Valerie M. Farrugia, James D. Mayo
  • Patent number: 10494455
    Abstract: The invention relates to a process for transitioning from a first continuous polymerization reaction in a gas phase reactor conducted in the presence of a first catalyst to a second polymerization reaction conducted in the presence of a second catalyst in the gas phase reactor wherein the first and second catalysts are incompatible, the process comprising: (a) discontinuing the introduction of the first catalyst from a first catalyst feeding system into a reactor; (b) introducing a catalyst killer to at least partially de-activate the first catalyst in the reactor (c) introducing into the reactor a second catalyst from a second catalyst feeding system separate from the first catalyst feeding system.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: December 3, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Yahya Banat, Abdulaziz Hamad Al-Humydi, Said Fellahi
  • Patent number: 9822195
    Abstract: The invention describes a process for producing a diene polymer, the process comprising the following steps in this order: i) polymerizing one or more diene monomers in the presence of a catalyst composition to give a reaction mixture; ii) adding to the reaction mixture one or more alkoxysilane compounds; iii) adding S2Cl2, SCl2, SOCl2, S2Br2, SOBr2 or a mixture thereof to the reaction mixture; and iv) optionally adding a protic agent to the reaction mixture so as to deactivate the catalyst. The invention further includes polymers that are obtainable according to this process, as well as products including the polymer.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 21, 2017
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Thomas D. Ruehmer, Sven Thiele, Anke Schmudde, Dieter Bellgardt
  • Patent number: 9505919
    Abstract: Process for stopping and restarting a polymerization in a system having a gas phase fluidized bed or stirred bed reactor, a degassing vessel and a seedbed storage silo, by conducting a first polymerization in the reactor using a polymerization catalyst to produce a first polymer, stopping the polymerization and removing the first polymer from the reactor to the degassing vessel, and either: introducing from the seedbed storage silo into the reactor a different seed-bed compatible with a second polymerization, passing to the seedbed storage silo the first polymer from the degassing vessel to form a new seedbed in the storage silo, and conducting the second polymerization in the reactor to produce a second polymer; or passing to the reactor at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the reactor, and conducting a polymerization in the reactor to produce polymer.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: November 29, 2016
    Assignee: INEOS EUROPE AG
    Inventors: Stephan Malzburg, Stefan Matull, Dirk Schroder
  • Patent number: 9187585
    Abstract: The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, thereby providing a first catalyst slurry, transferring said first catalyst slurry from said mixing vessel to an ethylene polymerization loop reactor at a concentration suitable for polymerizing ethylene, increasing the ratio of said diluent to said first ethylene polymerization catalyst in said first catalyst slurry, stopping the supply of said first catalyst slurry to said mixing vessel, stopping the supply of said first catalyst slurry to said ethylene polymerization loop reactor, stopping the supply of ethylene to said ethylene polymerization loop reactor, removing said first catalyst slurry from said ethylene polymerization loop reactor, emptying said mixing vessel, optionally rinsing said mixing vessel with fresh diluent, transfe
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: November 17, 2015
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Daan Dewachter, Martine Slawinski
  • Patent number: 9156750
    Abstract: A process for producing a purified hydrocarbon stream can include contacting a hydrocarbon stream contaminated with one or more organoaluminum compounds with a chemical agent that is capable of reacting with the one or more organoaluminum compounds.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: October 13, 2015
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Karel Eeckhout, Marc Richet
  • Patent number: 9085650
    Abstract: The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, thereby providing a first catalyst slurry, transferring said first catalyst slurry from said mixing vessel to an ethylene polymerization loop reactor at a concentration suitable for polymerizing ethylene, increasing the ratio of said diluent to said first ethylene polymerization catalyst in said first catalyst slurry, stopping the supply of said first catalyst slurry to said mixing vessel, stopping the supply of said first catalyst slurry to said ethylene polymerization loop reactor, stopping the supply of ethylene to said ethylene polymerization loop reactor, removing said first catalyst slurry from said ethylene polymerization loop reactor, emptying said mixing vessel, optionally rinsing said mixing vessel with fresh diluent, transfe
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: July 21, 2015
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Daan Dewachter, Martine Slawinski
  • Patent number: 9062224
    Abstract: An ink composition suitable for ink jet printing, including printing on deformable substrates. In embodiments, the stretchable ink composition is based on an aqueous ink formulation that provides a more cost-efficient ink over formulations and provides robust images, even when printed on deformable substrates. These ink compositions can be used for ink jet printing.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: June 23, 2015
    Assignee: XEROX CORPORATION
    Inventors: Yiliang Wu, Cameron Derry
  • Patent number: 9045578
    Abstract: The invention provides a polymer composition comprising a polyolefin or a diene elastomer, and an unsaturated compound (A) containing at least two groups each comprising an olefinic —C?C— bond or acetylenic —C?C— bond, characterized in that each group comprising an olefinic —C?C— bond or acetylenic —C?C— bond in the unsaturated compound (A) contains an aromatic ring or a further olefinic double bond or acetylenic unsaturation, the aromatic ring or the further olefinic double bond or acetylenic unsaturation being conjugated with the olefinic —C?C— or acetylenic —C?C— unsaturation.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: June 2, 2015
    Assignee: DOW CORNING CORPORATION
    Inventors: Damien Deheunynck, Valerie Smits
  • Patent number: 8969484
    Abstract: Provided herein are methods for the preparation of mono- and multi-functional telechelic polyolefins via polymerization reaction with a terpene-based initiator.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: March 3, 2015
    Assignee: Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, Young A. Chang, Patrick J. McDougall
  • Patent number: 8921479
    Abstract: New associative thickening agents belonging to the category of HASEs (Hydrophobically modified Alkali-Soluble Emulsions). These products contain an original associative monomer with a base of alkylcyclohexanol akoxylates. Their thickening power is greater than the HASE associative thickening agents of the prior art containing grafted alkyl phenols. An efficient substitute product is therefore available, which is free of alkyls phenols, matching current market demand.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Coatex
    Inventors: Jean-Marc Suau, Denis Ruhlmann
  • Patent number: 8916657
    Abstract: The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent in by-pass pipes. Also, the invention relates to the use of anti-fouling agent to prevent blockage by feeding the anti-fouling agent into the by-pass pipes of the loop reactor.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: December 23, 2014
    Assignee: Total Research & Technology Feluy
    Inventors: Daniel Siraux, Daan Dewachter, Louis Fouarge
  • Patent number: 8871870
    Abstract: Synthesized base resin compositions that include a raw resin and a maleimide and/or bismaleimide monomer as well as compounded varnishes that include a raw resin or synthesized base resin as well as a monomer, flame retardant and initiator as well as prepregs and laminates made using the synthesized base resin and compounded varnishes.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 28, 2014
    Assignee: Isola USA Corp.
    Inventors: Guroen He, Tarun Amla, Larry D. Olson, Peggy Conn
  • Patent number: 8865019
    Abstract: The method of inhibiting free radical polymerization of styrene includes adding multi-walled carbon nanotubes are added to the styrene monomer. The addition of the multi-walled carbon nanotubes at a concentration of 5% by weight is found to provide effective inhibition of the polymerization of the styrene. Greater decreases in the conversion rate of styrene to polystyrene are found through the addition of multi-walled carbon nanotubes functionalized with a carboxylic group (COOH). Still greater decreases in the conversion rate of styrene to polystyrene are found through the addition of multi-walled carbon nanotubes functionalized with octadecylamine (C18H39N). The multi-walled carbon nanotubes may also be functionalized with other functional groups, such as octadecanoate, polyethylene glycol or phenol. The functionalized multi-walled carbon nanotubes only require addition at a concentration of 1% by weight to be effective in polymerization inhibition.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: October 21, 2014
    Assignees: King Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and Technology
    Inventors: Muataz Ali Atieh, Adnan Al-Amer, Issam Thaher Amr
  • Patent number: 8816031
    Abstract: The present invention provides a method for preparing a water soluble polymer, which comprises: a first step of polymerizing: (a) 60 to 99.5 mol % of at least one selected from acrylamide and methacrylamide, (b) 0.5 to 20 mol % of at least one selected from ?,?-unsaturated monocarboxylic acid, ?,?-unsaturated dicarboxylic acid and salts thereof, and (c) 1 to 20 mol % of at least one selected from a water soluble cationic monomer and a salt thereof, (d) 0.01 to 1 mol % of a chain transfer agent, and (e) 0.005 to 5 mol % of a crosslinkable monomer, in the presence of a persulfate-based catalyst to obtain a prepolymer; and a second step of further adding the persulfate-based catalyst to the prepolymer obtained in the first step and the residual monomer, followed by the polymerization and termination of the polymerization.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: August 26, 2014
    Assignee: Harima Chemicals, Inc.
    Inventors: Yoshiharu Kimura, Takahiro Fujiwara
  • Patent number: 8816034
    Abstract: A method for producing an ?-olefin oligomer including: polymerizing in the presence of a catalyst one or more ?-olefins having 6 to 20 carbon atoms to produce an ?-olefin oligomer; and deactivating the catalyst by a deactivator from which oxygen is removed. A method for producing an ?-olefin oligomer including: polymerizing in the presence of a catalyst one or more ?-olefins having 6 to 20 carbon atoms to produce an ?-olefin oligomer; and passing the reaction solution containing the ?-olefin oligomer through a bag filter.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: August 26, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideki Sato, Yushi Matsuda, Jun Kohiruimaki, Masao Aida, Kana Minamimoto, Jun Mase
  • Patent number: 8710162
    Abstract: Polymerization processes in a bulk loop reactor are described herein. In particular, a method of contacting a flow of metallocene with a flow of propylene is provided. This method includes directing the flow of metallocene towards a junction, directing the flow of propylene towards the junction and maintaining a portion of the flow of metallocene separate from a portion of the flow propylene within a portion of the junction downstream of the flow of propylene into the junction. In another embodiment, a method of introducing a quantity of antifouling agent into a catalyst mixing system is provided. In this embodiment a portion of the antifouling agent is introduced at or downstream of a point of contact of a stream of propylene with a stream of catalyst. The antifouling agent may be a member, alone or in combination with other members, selected from Stadis 450 Conductivity Improver, Synperonic antifouling agent, and Pluronic antifouling agent.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 29, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Ronald Tharappel, Renaud Oreins, William Gauthier, David Attoe, Kevin McGovern, Michel Messiaen, David Rauscher, Kai Hortmann, Michel Daumerie
  • Patent number: 8691994
    Abstract: The invention provides a composition and a method of using the composition for inhibiting the unwanted polymerization of ethylenically unsaturated monomers. The composition is prepared by reducing a nitroxide stable free radical to its corresponding hydroxylamine through reaction with a dialkyl/aryl hydroxylamine and subsequent addition of a polymerization prevention component selected from phenolic antioxidants, phenylenediamine and phenylenediamine derivatives, or phenothiazine and phenothiazine derivatives targeted towards ethylenically unsaturated monomers. The conversion of the nitroxide by the dialkyl/aryl hydroxylamine is to prevent it or the polymerization prevention component from being “spent”by reaction with each other, impurities or any other incompatible components. This allows previously incompatible combinations to now work effectively. In fact, the combination is more efficacious as the combination exerts a synergy due to the presence of various polymerization prevention reagents.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: April 8, 2014
    Assignee: Nalco Company
    Inventor: David Youdong Tong
  • Patent number: 8686096
    Abstract: There is provided a method for making swellable particles, said method comprising mixing initial particles, at least one monomer, at least one initiator, and at least one chain-transfer agent, wherein said mixing is performed under conditions in which said monomer is capable of forming oligomer or polymer or a mixture thereof. Also provided are swellable particles made by that method. Further provided is a method of making polymeric resin particles comprising mixing at least one subsequent monomer to those swellable particles and polymerizing said subsequent monomer.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: April 1, 2014
    Assignee: Rohm and Haas Company
    Inventors: Martin John Deetz, Biwang Jiang, Jiun-Chen Wu
  • Patent number: 8669339
    Abstract: Disclosed are a polybutadiene having a controlled microstructure, a narrow molecular weight distribution, minimal gel content, and a low APHA color, a modified polybutadiene, producing methods for both, and a rubber-reinforced styrene resin composition using the same. The polybutadiene of the present invention is characterized in that the ratio (Tcp/ML1+4) of a 5% toluene melting viscosity (Tcp) measured at 25° C. and the Mooney viscosity (ML1+4) at 100° C. is 2.0 or higher, the molecular weight distribution (Mw/Mn) is 2.80 or less, the gel content is 0.06 wt % or less, and the APHA color is 20 or less.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: March 11, 2014
    Assignee: Ube Industries, Ltd.
    Inventors: Yasuyoshi Okabe, Yuuji Matsudaira, Chaiyaket Vichuta, Toshiyuki Sakaguchi
  • Patent number: 8658744
    Abstract: An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in more than one polymerization zones in one or more polymerization reactors using a high activity catalyst injected in the front end of the reactor to give solid polymer particles. According to the process of the invention, different hydrogen to olefin ratios are controlled and applied to the reactor leading to the production of very different molecular weights and therefore broadening the molecular weight distribution of the polymer produced.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: February 25, 2014
    Assignee: Ineos USA LLC
    Inventors: Mattijs van der Ham, Pierre Sere Peyrigain, William D. Stephens
  • Patent number: 8658745
    Abstract: An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in more than one polymerization zones in one or more polymerization reactors using a high activity catalyst injected in the front end of the reactor to give solid polymer particles. According to the process of the invention, different hydrogen to olefin ratios are applied to the reactor leading to the production of very different molecular weights and therefore broadening the molecular weight distribution of the polymer produced.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 25, 2014
    Assignee: INEOS USA LLC
    Inventors: Ton Kroezen, William D. Stephens, Mattijs van der Ham, Dennis L. McGinn, Pierre Sere-Peyrigain, Dirk Poesen
  • Patent number: 8642704
    Abstract: A functionalized polymer terminated by using an isocyanato alkoxysilane terminating agent. A method of preparing a functionalized polymer comprising the step of contacting a living polymer with an isocyanato alkoxysilane terminating agent.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: February 4, 2014
    Assignee: Bridgestone Corporation
    Inventors: Christine Rademacher, David F. Lawson, Terrence E. Hogan
  • Patent number: 8623972
    Abstract: The present invention relates to styrene-butadiene copolymers (SBR) that are prepared using aqueous emulsion polymerization technology and are intended for the adhesive and sealing industry, being particularly useful in the preparation of contact adhesives and pressure-sensitive adhesives (PSA) and widely applicable in the footwear and furniture industries. The use of this kind of elastomer in processes for preparing adhesives, having an aqueous or solvent base, provides high cohesion to adhesive compositions without compromising or jeopardizing the adhesion. The present invention is also intended to protect the process for obtaining SBR copolymers, simultaneously comprising: aqueous emulsion polymerization at high temperatures, the use of a specific surfactant and the maintenance of the Mooney viscosity and the combined styrene content in the copolymer in high ranges.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: January 7, 2014
    Assignee: Lanxess Elastomeros Do Brasil S.A.
    Inventors: Marcus Tadeu Moura Moutinho, Manoel Remigio dos Santos, Rinaldo Farias Luz, Humberto Rocha Lovisi, Mauro Eduardo Costa Braz Pinto
  • Patent number: 8598283
    Abstract: Methods for shutting down and restarting polymerization in a gas phase polymerization reactor are provided. The method can include introducing a polymerization neutralizer to the reactor in an amount sufficient to stop polymerization therein. The method can also include stopping recovery of a polymer product from the reactor and stopping introduction of a catalyst feed and a reactor feed to the reactor. The method can also include adjusting a pressure within the reactor from an operating pressure to an idling pressure. The method can also include adjusting a superficial velocity of a cycle fluid through the reactor from an operating superficial velocity to an idling superficial velocity. The method can also include maintaining the reactor in an idled state for a period of time.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: December 3, 2013
    Assignee: Univation Technologies, LLC
    Inventors: Eric J. Markel, Robert O. Hagerty, Richard B. Pannell, Michael E. Sieloff, Jerome Holveck
  • Patent number: 8557917
    Abstract: The present invention relates to a process for the preparation of a propylene homo- or copolymer, comprising the following steps: (i) feeding propylene and hydrogen, and optionally one or more comonomers, to a reactor R1, wherein the hydrogen is fed to the reactor R1 in a periodically varying amount, (ii) preparing a first fraction of the propylene homo- or copolymer in the reactor R1 in the presence of a catalyst, (iii) transferring the first fraction to a reactor R2, and (iv) preparing a second fraction of the propylene homo- or copolymer in the reactor R2, wherein the melt flow rate MFR (2.16 kg, 230° C.) of the propylene homo- or copolymer is higher than the melt flow rate MFR (2.16 kg, 230° C.) of the first fraction.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: October 15, 2013
    Assignee: Borealis AG
    Inventors: Pauli Leskinen, Michiel Bergstra
  • Patent number: 8551364
    Abstract: A process for inhibiting polymerization of an aromatic vinyl compound during the stage of producing, purifying, storing or transporting the aromatic vinyl compound which not only inhibits an initial polymerization but also inhibits polymerization efficiently over a long period of time and which is excellent in handleability. The process involves the step of adding a nitrogenous aromatic compound in combination with a sulfonic acid compound to the aromatic vinyl compound during the production, purification, storage of transportation thereof.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: October 8, 2013
    Assignee: Hakuto Co., Ltd.
    Inventors: Junichi Nakajima, Seiji Tanizaki
  • Patent number: 8524649
    Abstract: An aqueous dispersion of a copolymer with copolymerized units a) of at least one ethylenically unsaturated carboxylic acid, b) of at least one nonionic ethylenically unsaturated surfactant monomer, c) of at least one C1-C2-alkyl methacrylate, d) of at least one C2-C4-alkyl acrylate, where the alkyl chain length averaged over the number of alkyl groups of the alkyl acrylate is 2.1 to 4.0, is described. Following neutralization with alkali, the dispersion serves as associative thickener, in particular for liquid detergent and cleaner formulations. The thickeners are characterized by high transparency and high thickening effect coupled with high shear dilution.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: September 3, 2013
    Assignee: BASF SE
    Inventors: Reinhold J Leyrer, Kati Schmidt
  • Patent number: 8519076
    Abstract: A UV-crosslinkable polyacrylate pressure-sensitive adhesive composition having a polyacrylate having photoinitiator units incorporated therein by polymerization and being produced by a free-radical solvent-free polymerization process.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: August 27, 2013
    Assignee: tesa SE
    Inventors: Jessica Erwin, Klaus Massow, Stephan Zollner
  • Patent number: 8394897
    Abstract: Provided herein are methods for a vinylidene terminated polyolefin comprising: a. ionizing a polyolefin in the presence of a Lewis acid to form an ionized polyolefin; b. reacting the ionized polyolefin from step (a) with one or more dihydrocarbylmonosulfides; and c. reacting the product of step (b) with one or more proton acceptor compounds. In some embodiments, the dihydrocarbylmonosulfide has the formula: R1—S—R2 wherein R1 and R2 are each, independently, hydrocarbyl.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: March 12, 2013
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Publication number: 20130030133
    Abstract: A process for producing functional polymer, the process comprising the steps of reacting an anionic initiator including a functional group with a stabilizing monomer to produce a stabilized initiator, reacting the stabilized initiator with monomer capable of being anionically polymerized to produce a polymer, and terminating the polymer.
    Type: Application
    Filed: November 24, 2010
    Publication date: January 31, 2013
    Inventors: Terrence E. Hogan, Maria E. Uhall, William L. Hergenrother, Kenji Nakatani
  • Patent number: 8362155
    Abstract: [Problem] To provide a conjugated diene polymer cyclized product free from coloring, a conjugated diene polymer cyclized product that has a narrow molecular weight distribution and is free from coloring, and a method for producing these conjugated diene polymer cyclized products. [Means for Resolution] A conjugated diene polymer cyclized product having a Gardner color scale of not more than 3.0. A conjugated diene polymer cyclized product having a Gardner color scale of not more than 3.0 and a ratio of weight average molecular weight/number average molecular weight of not more than 1.5. A method for producing a conjugated diene polymer cyclized product includes adding water to a conjugated diene polymer solution obtained by polymerizing a conjugated diene in a solvent by using an organoalkali metal compound as an initiator, thereby terminating the polymerization and then subjecting the subject conjugated diene polymer to a cyclization reaction.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 29, 2013
    Assignee: Zeon Corporation
    Inventor: Toshio Kase
  • 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: 8362156
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: January 29, 2013
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Publication number: 20130012662
    Abstract: Provided herein are methods for the preparation of mono- and multi-functional telechelic polyolefins via polymerization reaction with a terpene-based initiator.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 10, 2013
    Inventors: Casey D. Stokes, Young A. Chang, Patrick J. McDougall
  • Publication number: 20120329962
    Abstract: Methods for shutting down and restarting polymerization in a gas phase polymerization reactor are provided. The method can include introducing a polymerization neutralizer to the reactor in an amount sufficient to stop polymerization therein. The method can also include stopping recovery of a polymer product from the reactor and stopping introduction of a catalyst feed and a reactor feed to the reactor. The method can also include adjusting a pressure within the reactor from an operating pressure to an idling pressure. The method can also include adjusting a superficial velocity of a cycle fluid through the reactor from an operating superficial velocity to an idling superficial velocity. The method can also include maintaining the reactor in an idled state for a period of time.
    Type: Application
    Filed: February 17, 2011
    Publication date: December 27, 2012
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Eric J. Markel, Robert O. Hagerty, Richard B. Pannell, Michael E. Sieloff, Jerome Holveck
  • Patent number: 8314189
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: November 20, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Patent number: 8293855
    Abstract: A method for transitioning from a first to a second catalyst system for the olefin polymerization reaction in one reactor, wherein the first catalyst system is incompatible with the second catalyst system, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the first catalyst system; and b) performing a second olefin polymerization reaction in the presence of the second catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the Mw of the first polyolefin fraction is less than the Mw of the second polyolefin fraction and the initial activity of catalyst component (A) exceeds the initial activity of catalyst component (B).
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: October 23, 2012
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Shahram Mihan, Massimo Covezzi
  • Publication number: 20120184692
    Abstract: The present invention relates to a method for preparing linear alpha-olefins (LAO) by oligomerization of ethylene in the presence of a solvent and homogeneous catalyst, comprising the steps of: (i) feeding ethylene, solvent and catalyst into an oligomerization reactor, (ii) oligomerizing the ethylene in the reactor, (iii) removing a reactor outlet stream comprising solvent, linear alpha-olefins, optionally unreacted ethylene and catalyst from the reactor via a reactor outlet piping system, (iv) dosing at least one additive selected from the group consisting of alcohols, poly-ethylene glycols, polyethylene glycol monoethers, polyethylene glycol diethers, polyamines, amines, amino alcohols and surfactants, (v) transferring the reactor outlet stre con the additive to a catalyst deactivation and removal section, and (vi) deactivating the catalyst with caustic and removing the deactivated catalyst from the reactor outlet stream, wherein the residence time of the additive in the reactor outlet stream prior to m
    Type: Application
    Filed: May 28, 2010
    Publication date: July 19, 2012
    Inventors: Peter M. Fritz, Heinz Bölt, Andreas Meiswinkel, Carsten Taube, Florian Winkler, Volker Göke, Wolfgang Müller, Anina Wöhl, Richard Schneider, Uwe Rosenthal, Helmut Fritz, Bernd H. Müller, Normen Peulecke, Stephan Peitz, Bhaskar Reddy Aluri, MOhammed Al-Hazmi, Shahid Majeed Azam, Fuad Mosa, Abdullah Al-Dugathier
  • Patent number: 8163852
    Abstract: Solving problems in the prior art, provided are a resist polymer which is small in lot-to-lot, reactor-to-reactor and scale-to-scale variations, and contains no high polymer, is excellent in solubility and storage stability, and is suitable for fine pattern formation, and a method for production thereof. The present invention provides the resist polymer at least having a repeating unit having a structure which is decomposed by an acid to become soluble in an alkali developer and a repeating unit having a polar group to enhance adhesion to a substrate, characterized in that a peak area of a high molecular weight component (high polymer) with molecular weight of 100,000 or more is 0.1% or less based on an entire peak area in a molecular weight distribution determined, by gel permeation chromatography (GPC).
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: April 24, 2012
    Assignee: Maruzen Petrochemical Co., Ltd.
    Inventors: Takanori Yamagishi, Tomo Oikawa, Ichiro Kato, Kazuhiko Mizuno, Satoshi Yamaguchi
  • Patent number: 8148470
    Abstract: This invention relates to a process to make a multimodal polyolefin composition comprising: (i) contacting at least one first olefin monomer with a mixed catalyst system, under polymerization conditions, to produce at least a first polyolefin component having a Mw of 5,000 g/mol to 600,000 g/mol, wherein the mixed catalyst system comprises: (a) at least one polymerization catalyst comprising a Group 4 or Group 5 transition metal; (b) at least one organochromium polymerization catalyst; (c) an activator; and (d) a support material; (ii) thereafter, contacting the first polyolefin component/mixed catalyst system combination with a molecular switch; (iii) contacting the first polyolefin component/mixed catalyst system combination with at least one second olefin monomer, which may be the same or different, under polymerization conditions; and (iv) obtaining a multimodal polyolefin composition.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 3, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Matthew S. Bedoya
  • Publication number: 20120035336
    Abstract: The embodiments of the invention relate to a multifunctional lithiated amine-containing compound comprising at least two molecules of lithiated amine in a molecule of the compound. In one embodiment, the compound has a formula where x is an integer of 1 or more, Q is (a) an element selected from the group consisting of O, S, N, P and Si or (b) an alkylene group having from 1 to 20 methylene groups, and R1 and R2 are the same or different and are selected from the group consisting of alkyls, cycloalkyls and aralkyls containing from 1 to 20 carbon atoms. In another embodiment, the compound comprises cyclic lithio amines and has a formula: where x is 1 or more, R3, R4 and R5 are the same or different and represent alkylene groups containing from 3 to 20 carbon atoms.
    Type: Application
    Filed: October 12, 2011
    Publication date: February 9, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventor: YUAN-YONG YAN
  • Patent number: 8076440
    Abstract: The invention relates to polysiloxane block copolymers of the formula A[LB(S)Q]m, where A is a polysiloxane block, L is a divalent organic linker, B is a polymer block composed of radically polymerizable monomers, S is a sulfur atom and Q is a monovalent organic radical and m is an integer from 1 to 50, to a method for their production, and to their use in cosmetics or personal care.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: December 13, 2011
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Dirk Kuppert, Burghard Grüning, Brian Yang, Sven Balk, Gerd Löhden
  • Publication number: 20110300296
    Abstract: Methods for preparing silicone-containing polymers by essentially adiabatic polymerization methods are disclosed. The polymerization system includes free radically polymerizable monomers. The monomers include ethylenically unsaturated cone-containing monomers and/or mercapto-functional silicones as well as additional free radically polymerizable monomers. The silicone-containing polymers are useful as adhesives or release materials.
    Type: Application
    Filed: November 23, 2009
    Publication date: December 8, 2011
    Inventors: Audrey A. Sherman, Mark F. Ellis, Ramesh C. Kumar, Sonja S. MacKey, Richard L. Peloquin, Jeffrey O. Emslander
  • Patent number: 8063153
    Abstract: A functionalized polymer includes an elastomer, a terminal functional group including at least one heteroatom, and a unit intermediate the elastomer and the functional group; the intermediate unit includes a terminal moiety which, in its anionic form, is less basic than a secondary amino radical ion. Methods of making the functionalized polymer and of using it with particulate filler to make, e.g., a tire tread composition also are disclosed.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: November 22, 2011
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, David F. Lawson
  • Patent number: 8058366
    Abstract: Embodiments of our invention relate generally to methods of monitoring and controlling polymerization reactions including reactions producing multimodal polymer products using multiple catalysts in a single reactor. Embodiments of the invention provide methods of rapidly monitoring and controlling polymerization reactions without the need to sample and test the polymer properties. The method uses reactor control data and material inventory data in a mathematical leading indicator function to control the reactor conditions, and thereby the products produced under those conditions.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: November 15, 2011
    Assignee: Univation Technologies, LLC
    Inventors: David J. Sandell, Marjorie E. King, Fred D. Ehrman
  • Publication number: 20110236686
    Abstract: A method is provided for making nanoparticles, including the steps of: combining a hydrocarbon solvent and an aprotic, polar co-solvent, a mono-vinyl aromatic monomer, polymerization initiator, a solution stabilizer, and a first charge of a cross-linking agent. Subsequently, a second charge of cross-linking agent is added. The nanoparticles have an average diameter of 5 nanometers to about 10,000 nanometers. Spherical nanoparticles are also provided that include a cross-linking agent comprising 30% to 60% by weight of the combined weight of a mono-vinyl aromatic species and the cross-linking agent. The spherical nanoparticles also meet the following equation: 0.90?(D1/D2)?1.1 wherein D1 is a first diameter of a nanoparticle and D2 is a second diameter of the nanoparticle, and D1 and D2 intersect at right angles.
    Type: Application
    Filed: December 28, 2010
    Publication date: September 29, 2011
    Inventors: Hideki Kitano, Yaohong Chen
  • Patent number: 8022152
    Abstract: Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: September 20, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Steven Dale Ittel, Lynda Kaye Johnson, Lin Wang, Ying Wang, Elizabeth Forrester McCord, Catherine E. Radzewich, Stephan James McLain, Karl Jeffrey Sweetman, Alison Margaret Anne Bennett, Alex Sergey Ionkin, Rinaldo Soria Schiffino
  • Patent number: 8013083
    Abstract: A method for inhibiting the premature polymerization of styrenic monomers is disclosed wherein the method comprises adding to said monomers a combination of: (A) at least one inhibitor that is a sulfonic acid compound in a concentration sufficient to initiate cationic polymerization of said styrenic monomers at any point of the manufacturing or purification process and cause a resulting temperature increase; and (B) at least one amine in a concentration sufficient to reduce said cationic polymerization and said temperature increase; whereby an uncontrolled exothermic reaction between said sulfonic acid compound and said styrenic monomers will be prevented.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: September 6, 2011
    Assignee: ChemTura Corporation
    Inventors: Vilan Kosover, Jesus A. Fabian, Istvan Lippai, Brigitte Benage, Gerald J. Abruscato