Added Material Contains Sulfur Atom Patents (Class 526/85)
  • Patent number: 10487159
    Abstract: An object of the present invention is to achieve a high polymerization ratio and high functional group introduction ratio during production of a (meth)acrylic polymer having a functional group at one end, while suppressing formation of a disulfide. According to the constitution of the present invention, a method for producing a (meth)acrylic polymer having a functional group at one end includes subjecting a (meth)acrylic monomer to a polymerization reaction, in the presence of an inert gas containing 0.01% to 6.0% by volume of oxygen, by using, as an initiating species, a compound having a functional group and a thiol group.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: November 26, 2019
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Takeshi Miyamoto, Takahiro Okubo, Hiroto Matsumoto, Shu-ichi Goto, Shinsuke Yabunaka
  • Patent number: 9290599
    Abstract: A method for preparing a functionalized polymer, the method comprising providing a reactive polymer, where the reactive polymer includes an oxygen anion, a sulfur anion, or a nitrogen anion, reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group, and reacting the polymer including the dithio carboxyl group with a blocking agent.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: March 22, 2016
    Assignee: Bridgestone Corporation
    Inventors: Terrence E. Hogan, William L. Hergenrother
  • 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: 8921478
    Abstract: A method of inhibiting hydrates in a fluid comprising water and gas comprising adding to the fluid an effective hydrate-inhibiting amount of a composition comprising one or more copolymers of N-alkyl(alkyl)acrylamide monomers and one or more cationic monomers selected from acid and alkyl chloride quaternary salts of N,N-dialkylaminoalkyl(meth)acrylates and N,N-dialkylaminoalkyl(meth)acrylamides.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: December 30, 2014
    Assignee: Nalco Company
    Inventors: Peter G. Conrad, Erick J. Acosta, Kevin P. McNamee, Brian M. Bennett, Olga E. S. Lindeman, Joseph R. Carlise
  • 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: 8722809
    Abstract: The present invention provides a preparation process for converting to a vinylidene fluoride elastomer having a group having sulfinic acid, sulfinic acid derivative, sulfonic acid or sulfonic acid derivative at one end or both ends of its trunk chain, and the preparation process provides a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR1R2—CR3R4—SO2H, wherein R1 to R4 may be the same or different and each is hydrogen atom or fluorine atom, by allowing a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR1R2—CR3R4—X1, wherein R1 to R4 are as defined above, X1 is bromine atom or iodine atom, to react with a sulfur compound represented by the formula: (M1)nH2-nS2O4, wherein M1 is a monovalent or divalent metal ion or ammonium ion, n is an integer of 0 to 2.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: May 13, 2014
    Assignees: The University of Tokyo, Daikin Industries, Ltd.
    Inventors: Yuzo Komatsu, Haruhiko Mohri, Hirokazu Aoyama, Takanori Fukushima, Takuzo Aida
  • 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: 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: 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
  • 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
  • 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: 20120277385
    Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 1, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: QING YANG, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
  • Publication number: 20110306738
    Abstract: Provided herein are methods for the preparation of telechelic polyolefins via polymerization reaction with a terpene initiator.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 15, 2011
    Inventors: Casey D. Stokes, Young A. Chang
  • 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
  • Patent number: 8013073
    Abstract: Disclosed is a method for preparing polyolefins containing vinylidine end groups from quasiliving carbocationically terminated polyolefin polymers by contacting the quasiliving carbocationically terminated polymer with a suitable nonaromatic heterocyclic ring quenching agent and substituted derivatives thereof.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: September 6, 2011
    Assignees: Chevron Oronite Company LLC, The University of Southern Mississippi
    Inventors: Casey D. Stokes, Robson F. Storey
  • Publication number: 20110213072
    Abstract: A HASE-type rheology modifier containing an associative monomer which is functionalised by a hydrophobic group of an oxo alcohol base is provided. A method to prepare the HASE rheology modifier and its use in a method to thicken and create a Newtonian rheological profile in an aqueous formulation such as a water based paint is also provided.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 1, 2011
    Applicant: COATEX S.A.S.
    Inventors: Jean-Marc Suau, Denis Ruhlmann
  • Patent number: 7981990
    Abstract: A method comprising: (a) forming a living liquid polymer, wherein said living liquid polymer is anionically initiated and comprises a cation; (b) adding a functional initiator precursor of the formula FI-H, wherein H is hydrogen and FI is a functional group, said H terminates said living liquid polymer resulting in said liquid polymer having a number average molecular weight of about 20,000 (g/mole) to about 100,000 (g/mole), and said FI and said cation form a functional initiator; (c) adding monomer, wherein said functional initiator initiates anionic polymerization of said monomer; and (d) terminating the polymerization reaction initiated in step (c). Steps (a) through (c) may be conducted in a single reactor, allowing a liquid polymer to be dispersed in a functionalized polymer in a single polymerization step. Thus, the liquid polymer does not have to be handled separately and processing efficiency is improved.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 19, 2011
    Assignee: Bridgestone Corporation
    Inventor: Yuan-Yong Yan
  • Patent number: 7973111
    Abstract: Disclosed is a method to safely terminate a runaway reaction within a reaction vessel, comprising: sensing an increase in pressure in the reaction vessel, opening a barrier blocking a flow path into the reactor, wherein the barrier opening is achieved via a mechanical response to the sensed increase in pressure, and injecting a kill agent into the reaction vessel via the opened flow path, thereby terminating the reaction. Also disclosed is a system for performing the method. The system functions without an external electrical source and is therefore compliant with ASME standards.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: July 5, 2011
    Assignee: Fina Technology, Inc.
    Inventors: Thanh Tri Nguyen, Tom Eugene Cushman, John Stevenson, Alan Bitzer
  • Patent number: 7964677
    Abstract: Method of changing from a polymerization using a first catalyst to a polymerization using a second catalyst which is incompatible with the first catalyst in a gas-phase reactor, which comprises the steps a) stopping of the polymerization reaction using the first catalyst, b) flushing of the reactor under polymerization conditions with at least one deactivating agent comprising a volatile constituent and a nonvolatile constituent in a weight ratio of from 0.1 to 1000, c) introduction of the second catalyst into the reactor and d) continuation of the polymerization using the second catalyst.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 21, 2011
    Assignee: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Rainer Karer
  • Patent number: 7829259
    Abstract: A resin for photoresist compositions is disclosed with excellent resolution and line edge roughness characteristics. A photoresist composition and a method for forming a resist pattern using such a resin are also disclosed. The resin has a hydroxyl group bonded to a carbon atom at a polymer terminal, and the carbon atom in the ?-position to the hydroxyl group has at least one electron attractive group.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: November 9, 2010
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Hada, Masaru Takeshita, Shogo Matsumaru, Hiroaki Shimizu
  • Patent number: 7816459
    Abstract: Disclosed is a method for preparing polyolefins containing vinylidine end groups from quasiliving carbocationically terminated polyolefin polymers by contacting the quasiliving carbocationically terminated polymer with quenching agent selected from the group consisting of polypyrrole, polyvinylpyridine, polyphenothiazine, polyoxazine, and polypyrrole-co-thiophene and substituted derivatives thereof.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: October 19, 2010
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Patent number: 7794916
    Abstract: A polymer compound having a structure represented by the formula (1) as defined herein at a main chain terminal, and a positive photosensitive composition containing a polymer compound having a structure represented by the following formula (1) as defined herein at a main chain terminal and a photoacid generator capable of generating an acid upon irradiation with actinic rays or radiation.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: September 14, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Akinori Shibuya
  • Patent number: 7728083
    Abstract: Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of vinyl aromatic monomers wherein the method comprises adding to said monomers an effective amount of an inhibitor and retarder blend comprising: (A) at least one aromatic sulfonic acid; (B) at least one amine; (C) at least one nitrophenol; and (D) at least one member of the group consisting of nitroxy radical-containing compounds and nitrosoanilines.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: June 1, 2010
    Assignee: Chemtura Corporation
    Inventors: Vilan Kosover, Jesus R. Fabian, Istvan Lippai, Brigitte Benage, Gerald J. Abruscato
  • Patent number: 7696290
    Abstract: Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of vinyl aromatic monomers wherein the method comprises adding to said monomers an effective amount of an inhibitor and retarder blend comprising: (A) at least one aromatic sulfonic acid; (B) at least one amine; (C) at least one nitrophenol; and (D) at least one member of the group consisting of nitroxy radical-containing compounds and nitrosoanilines.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: April 13, 2010
    Assignee: Crompton Corporation
    Inventors: Vilan Kosover, Jesus A. Fabian, Istvan Lippai, Brigitte Benage, Gerald J. Abruscato
  • Patent number: 7648817
    Abstract: A positive working resist composition comprises a specific resin. The specific resin comprises: a repeating unit having a first specific group; and a repeating unit having a second specific group, the first specific group being different from the second specific group; and a specific structure in an end terminal of the resin. The specific resin decomposes by action of an acid to increase its solubility in an alkaline developer.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: January 19, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Takayuki Kato, Akinori Shibuya
  • Patent number: 7629107
    Abstract: A positive photosensitive composition comprises: a polymer compound having an acid-decomposable structure on a terminal of the polymer compound; and a compound capable of generating an acid upon irradiation with actinic ray or radiation.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: December 8, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Akinori Shibuya, Takayuki Kato
  • Patent number: 7592123
    Abstract: A resin for photoresist compositions is disclosed with excellent resolution and line edge roughness characteristics. A photoresist composition and a method for forming a resist pattern using such a resin are also disclosed. The resin has a hydroxyl group bonded to a carbon atom at a polymer terminal, and the carbon atom in the ?-position to the hydroxyl group has at least one electron attractive group.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: September 22, 2009
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Hada, Masaru Takeshita, Shogo Matsumaru, Hiroaki Shimizu
  • Patent number: 7449439
    Abstract: A water-soluble thickener which is highly effective even in thickening strongly acidic aqueous solutions and has excellent stability in such solutions. It comprises a water-soluble copolymer having a weight-average molecular weight of 6,000,000 or higher obtainable by polymerizing a monomer mixture which comprises 2-acrylamido-2-methylpropanesulfonic acid and/or a salt thereof and acrylic acid and/or a salt thereof as essential components and optionally one or more other copolymerizable monomer components including the compound represented by the following Formula (1) and/or a salt thereof, wherein the 2-acrylamido-2-methylpropanesulfonic acid and/or a salt thereof represents 20 mol % or more of all the monomers. (wherein n is an integer of 1 to 12).
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: November 11, 2008
    Assignee: Toagosei Co., Ltd.
    Inventors: Kenji Ito, Yoshio Mori
  • Patent number: 7399810
    Abstract: There is provided a process for producing a polymer comprising the steps of (a) adding at least one low-reactivity monomer to a reaction vessel with a decreasing rate of addition, (b) adding at least one high-reactivity monomer to said reaction vessel, (i) wherein less than 1% of all of said high-reactivity monomers, by weight of high reactivity monomers, based on the weight of all said high-reactivity monomers, is added to said reaction vessel before the beginning of said step (a), and (ii) wherein at least half of all of said high-reactivity-monomers, by weight of high reactivity monomers, based on the weight of all of said high-reactivity monomers, is added to said reaction vessel before the completion of said step (a), and (c) adding at least one chain regulator to said reaction vessel prior to the completion of said step (a), wherein said steps (a), (b), and (c) are performed while conditions in said reaction vessel will cause polymerization of said low-reactivity monomer and said high-reactivity
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: July 15, 2008
    Assignee: Rohm and Haas Company
    Inventors: Marianne Creamer, Joseph Manna
  • Patent number: 7375148
    Abstract: A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M comprising styrene, butadiene, and if desired up to 30% by weight, based on 100% by weight of monomers, of ethylenically unsaturated comonomers other than styrene and butadiene; in a polymerization vessel by a monomer feed technique in the presence of a regulator system containing, based on 100% by weight of monomers, from 0.02 to 0.5% by weight of at least one hydrocarbon HC having from 6 to 20 carbon atoms, selected from compounds which on abstraction of a hydrogen atom form a pentadienyl radical or 1-phenylallyl radical, and ?-methylstyrene dimer, and from 0.3 to 2% by weight of an organic compound S containing at least one SH group wherein at least 30%, preferably at least 50%, in particular at least 80%, and with particular preference the entirety (or >95%) of hydrocarbon HC is included in the initial charge to the polymerization vessel.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 20, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Gaschler, Volker Schaedler, Lambertus Manders, Thomas Wirth, Hubertus Kroener
  • Patent number: 7342087
    Abstract: A method for prevention of increase in particles in copolymer for semiconductor resist, which comprises passing, through a filter containing a resin having an amino group and/or an amide bond a copolymer solution for semiconductor resist which contains a copolymer for semiconductor resist having a polar group-containing recurring unit and an alicyclic structure-containing recurring unit and which contains no ionic additive. With the method, there can be obtained a copolymer semiconductor resist, which can be suitably used in a resist film used for formation of a fine pattern in semiconductor production and which is very low in formation of particle s during storage and accordingly generates substantially no defect after development.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: March 11, 2008
    Assignee: Maruzen Petrochemical Co. Ltd.
    Inventors: Takanori Yamagishi, Kazuhiko Mizuno
  • Patent number: 7265191
    Abstract: A multi-functional admixture for simultaneously providing specified characteristics to hydraulic cement compositions such as concrete contains one or more of specified reaction mixtures obtained by specified two processes as well as partially or completely neutralized substances obtained from such a reaction mixture through a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: September 4, 2007
    Assignee: Takemoto Yushi Kabushiki Kaisha
    Inventors: Mitsuo Kinoshita, Kazuhide Saitou, Shinji Tamaki, Masahiro Iida
  • Patent number: 7169867
    Abstract: A catalyst for bulk polymerization of a polymerizable unsaturated compound of the invention comprises a compound having at least one thiol group and a secondary hydroxyl group and represented by the following formula (I): wherein R1 to R5 are each a hydrogen atom or an alkyl group, and R6 is a hydroxyl group, an alkyl group or the like. Also a process for bulk polymerization of the invention comprises polymerizing a polymerizable unsaturated compound in an inert gas atmosphere substantially in the absence of a solvent using, as a catalyst, a compound having at least one thiol group and a secondary hydroxyl group and represented by the above formula (I). According to the catalyst or the process of the invention, bulk polymerization can be carried out in one-component catalyst system in a high yield without suffering a runaway reaction.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: January 30, 2007
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Syuji Okamoto, Hiroshi Ueno
  • Patent number: 7045582
    Abstract: Provided are a preparation process of a copolymer for semiconductor lithography, suited for a film forming composition used for the formation of minute patterns necessary for semiconductor fabrication, which comprises carrying out radical polymerization of at least two monomers having an ethylenic double bond in the presence of a polymerization initiator in a polymerization solvent, while causing to exist, in the solution containing the monomers, a polymerization inhibitive component; and a copolymer for semiconductor lithography prepared by the above-described process, and contains no high polymer, has excellent storage stability and generates remarkably less defects in resist pattern when used for semiconductor lithography.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: May 16, 2006
    Assignee: Maruzen Petrochemical Co. Ltd.
    Inventors: Takanori Yamagishi, Kazuhiko Mizuno, Tomo Oikawa, Ichiro Kato
  • Patent number: 6984706
    Abstract: A diene rubber (A) having a weight average molecular weight (Mw) of 100,000 to 3,000,000, an Mw/number average molecular weight (Mn) ratio of 1.30 to 2.50, and an Mw/peak top molecular weight (Mp) ratio 0.70 to 1.30. A rubber composition comprising the diene rubber (A) and a diene rubber (B) having an Mw of 2,000 to 90,0000 and/or an oil extender for rubber has good processability and can give a rubber vulcanizate having high tensile strength and good abrasion resistance. The diene rubber (A) is produced by conducting a living polymerization of diene monomer in a hydrocarbon solvent; adding a polymerization stopper to a polymerization mixture at a conversion of 5 to 98% to deactivate 10 to 90% by mole of active terminals present as of the initiation of polymerization; and finally adding a polymerization stopper to completely terminate the polymerization reaction.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: January 10, 2006
    Assignee: Zeon Corporation
    Inventors: Takeshi Karato, Masaaki Komatu, Kazuhiro Takase
  • Patent number: 6936666
    Abstract: Continuous gas-phase polymerization process for preparing ethylene and propene homopolymers and copolymers, in which ethylene, propene or mixtures comprising ethylene or propene and C3-C8-?-monoolefins are polymerized in the polymerization zone of a gas-phase polymerization reactor at from 30 to 125° C. and pressures of from 1 to 100 bar in the gas phase in a bed comprising finely divided polymer in the presence of a catalyst. To remove the heat of polymerization, the reactor gas is circulated and firstly passes through a cyclone after leaving the reactor. To prevent polymer deposits in the circulating gas system, a catalyst poison having a boiling point above the maximum temperature within the circulating gas system is fed into this circulating gas system at a position between the reactor and the cyclone.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: August 30, 2005
    Assignee: Babell Polyolfine GmbH
    Inventors: Shahram Mihan, Rainer Karer, Manfred Hecker, Philipp Rosendorfer, Kasper Evertz, Armin Lange
  • Patent number: 6897269
    Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and other MAO-based single site catalyst systems.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: May 24, 2005
    Assignee: Univation Technologies, LLC
    Inventors: David James Schreck, Mark G. Goode
  • Patent number: 6884855
    Abstract: Sulfurized olefin compositions and components are prepared from sulfurizing high methylvinylidene polyisobutylene(s) having at least 25% methylvinylidene and a number average molecular weight in the range of about 120 to about 600, at suitable temperatures and pressures. The resulting sulfurized reaction product and polyisobutyl-1,2-dithiole-4-cyclopentene-3-thione compounds and derivatives are useful in lubricating oils.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: April 26, 2005
    Assignee: Chevron Oronite Company LLC
    Inventors: Kenneth D. Nelson, Frank Plavac
  • Patent number: 6806331
    Abstract: A catalyst for bulk polymerization of a polymerizable unsaturated compound comprises a compound having at least one thiol group and a secondary hydroxyl group and represented by the following formula (I): wherein R1 to R5 are each a hydrogen atom or an alkyl group, and R6 is a hydroxyl group, an alkyl group or the like. Also a process for bulk polymerization of the invention comprises polymerizing a polymerizable unsaturated compound in an inert gas atmosphere substantially in the absence of a solvent using, as a catalyst, a compound having at least one thiol group and a secondary hydroxyl group and represented by the above formula (I). According to the catalyst or the process, bulk polymerization can be carried out in one-component catalyst system in a high yield without suffering a runaway reaction.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: October 19, 2004
    Assignee: Soken Chemical and Engineering Co., Ltd.
    Inventors: Syuji Okamoto, Hiroshi Ueno
  • Patent number: 6794466
    Abstract: The present invention elates to a vinyl acetate based polymer latex composition obtained by emulsion polymerization of: (a) polyvinyl alcohol, (c) a monomer mixture comprising vinyl acetate, and (d) optionally one or more additional co-monomer(s), in presence of (c) 0.0001-0.05 wt. % of a chain transfer agent, based on total monomer weight, said vinyl acetate based polymer latex composition having a weight average particle size ≧400 nm and a higher shear thinning factor than the vinyl acetate based polymer latex composition (a), (b) and (d) obtained in the absence of the chain transfer agent (c). According to one embodiment, emulsion polymerization is carried out in presence of 0.001 to 0.05 wt. % of a chain transfer agent selected from the group consisting of aldehydes and chain transfer agents having a similar chain transfer constant with regard to vinyl acetate as the monomer. According to another embodiment, emulsion polymerization is carried out in presence of 0.0001 to 0.01 wt.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 21, 2004
    Assignee: Air Products Polymers, L.P.
    Inventors: Helmut Zecha, Rudolf Weissgerber, Francis Petrocelli
  • Patent number: 6784262
    Abstract: Processes for chemically-modifying the surface of an emulsion polymer particle are provided which include providing an aqueous emulsion polymer, a monomer at a level of at least 0.5% by weight based on the weight of the emulsion polymer and a, surface-modifying chemical capable of bonding with the monomer, under conditions where there is no substantial polymerization of the monomer, and then reducing the level of the monomer by at least 50%.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: August 31, 2004
    Assignee: Rohm and Haas Company
    Inventor: Robert Mitchell Blankenship
  • Patent number: 6777385
    Abstract: A low-molecular (meth)acrylic acid (salt)-based polymer having a good color tone is obtained by polymerizing an aqueous solution of at least one monomer component of a high concentration in the presence of an alkaline substance, wherein: 100 to 95 mol % of the at least one monomer component is a monoethylenically unsaturated monocarboxylic acid (salt) monomer (a) having 3 to 6 carbon atoms; and 0 to 5 mol % of the at least one monomer component is a monoethylenically unsaturated monomer (b) copolymerizable with the monomer (a) (wherein the total of (a) and (b) is 100 mol % ); and wherein: a persulfate salt and hydrogen peroxide are used together as polymerization catalysts; and the entirety of the alkaline substance as used is set not to be more than 99 mol % of the amount which is necessary for neutralizing all acid groups of the at least one monomer component; and wherein: the dropwise addition of the hydrogen peroxide is completed at the latest 10 minutes earlier than the completion time of the dropwise ad
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: August 17, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Akiko Hemmi, Yoshihiro Maeda, Shigeru Yamaguchi, Yoshikazu Fujii
  • Publication number: 20040014910
    Abstract: A process for polymerization of vinyl monomers is described comprising polymerizing vinyl monomers in the presence of an initiating system comprising (i) an organic iodide, organic bromide, organic chloride, or an organic sulfur initiator compound, and (ii) a layered material catalyst, and wherein when the initiator compound comprises an organic bromide or organic chloride compound, the initiating system further comprises an iodide or sulfur containing salt compound or a transition metal salt. The present invention provides a novel method for living polymerization of vinyl monomers, which provides a high level of macromolecular control over the polymerization process and which leads to uniform and controllable polymeric products, which may include well-defined structures and complex architectures.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Applicant: Eastman Kodak Company
    Inventor: Jin-Shan Wang
  • Patent number: 6642337
    Abstract: The problem addressed by the invention was to find an anionic polymerization inhibitor for cyanoacrylate adhesives containing one or more cyanoacrylates, stabilizers against anionic and radical polymerization and auxiliaries typically used in such adhesive systems which, besides a reliable inhibiting effect, would counteract any increase in the setting time after storage. This problem was solved by using 2-oxo-1,3,2-dioxathiolanes as inhibitors.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 4, 2003
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Hanns-Roland Misiak, Dagmar Behn
  • Patent number: 6596824
    Abstract: Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on the wall of reactors and around stirring blades is prevented. The method enables continuous and stable production of high-quality polyolefins, with no pipe line clogging. The method is characterized by a specific supply mode of feeding a catalyst activity retardant such as alcohol into polymerization reactors. Specifically, the retardant is fed into the vapor phase in a polymerization reactor and into the powder phase therein through its side wall. Preferably, the retardant is fed into the powder phase through a plurality of sites of the side wall of the reactor.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: July 22, 2003
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Tomoo Nambu, Masao Aida, Masatoshi Toda
  • Patent number: 6239199
    Abstract: Disclosed are a resin composition for inhibiting polymerization of a vinyl compound, which includes a resin and 0.1 to 30% by weight based on the resin, of a polymerization inhibitor for the vinyl compound; a resin molding for inhibiting polymerization of a vinyl compound, and a packing for inhibiting polymerization of a vinyl compound in a distillation tower, the resin molding and packing each including this resin composition. Also disclosed are methods for inhibiting polymerization of a vinyl compound, which include contacting the vinyl compound with the resin composition; these methods include processes of inhibiting polymerization of a vinyl compound in a distillation tower, by contacting the vinyl compound in the distillation tower with packing therein which includes this resin composition.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 29, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventor: Kazumi Tanaka
  • Publication number: 20010001797
    Abstract: A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiator stream. The comb-branched copolymer made thereby performs better as water reducing agent in cement compared to that made by a batch process.
    Type: Application
    Filed: January 16, 2001
    Publication date: May 24, 2001
    Applicant: ARCO Chemical Technology, L.P.
    Inventors: Bi Le-Khac, Wei Wang, Edward T. Shawl
  • Patent number: 6207751
    Abstract: Disclosed is a semicarbazide derivative represented by formula (1) or a terminal-blocked form thereof: wherein R1 represents a terminal isocyanate group-free polyisocyanate residue or a terminal isocyanate group-free triisocyanate residue; R2 represents an alkylene group, a cycloalkylene group, or an arylene group; each R3 independently represents a hydrogen atom or an alkyl group; n is zero or 1; and each of and m is independently zero or a positive integer, provided l that l and m satisfy the relationship 3≦(l+m)≦20. Also disclosed is (&dgr;) a composition comprising (&agr;) at least one member selected from the group consisting of the semicarbazide derivative and a terminal-blocked form thereof and (&bgr;) at least one member selected from the group consisting of a hydrophilic group-containing compound and a terminal-blocked form thereof.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: March 27, 2001
    Inventors: Akira Nakabayashi, Tetsuya Murakami
  • Patent number: 6103789
    Abstract: Acrylic copolymers containing the following repeating units: ##STR1## wherein R.sub.A, R.sub.B, R.sub.C, R.sub.I, R.sub.II, equal or different, are H or CH.sub.3 ; M.sup.+ is H or a cation belonging to group IA, IIA, or ammonium; n is an integer from 0 to 2; A.sub.0 is --COO--(R.sub.T O).sub.m --R.sub.Z wherein R.sub.T is a saturated C.sub.2 -C.sub.4 alkyl group, m is an integer from 7 to 50, R.sub.Z is H or a saturated C.sub.1 -C.sub.4 alkyl group; R.sub.III is H, COOH, COO.sup.- M.sup.+ wherein M.sup.+ is as above defined or A.sub.0 as above defined; and optionally containing a third comonomer in a quantity 0-20% of the total monomer weight,said polymers, that contain in terminal position silanol groups, are obtainable by copolymerizing the monomers in the presence of the following chain transfer agents:(A) SH--R.sub.o --Si(R.sub.IB).sub.NB (OR.sub.IA).sub.NA, wherein R.sub.IA is hydrogen or a saturated C.sub.1 -C.sub.3 alkyl, R.sub.IB is C.sub.1 -C.sub.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: August 15, 2000
    Assignee: Elf Atomchem Italia S.r.l.
    Inventors: Franco Marciandi, Christian Collette
  • Patent number: H1957
    Abstract: Free radical polymerizations are immediately terminated by adding a phenothiazine-containing solution whose solvent comprises at least 50% of its weight of an N-alkylpyrrolidone.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: April 3, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Fried, Gerhard Nestler, Paul Leon Kageler, Lawrence Edwin James