Vulcanized In The Presence Of A Chemical Treating Agent, E.g., Cured, Crosslinked, Etc. Patents (Class 525/332.5)
  • Patent number: 10597521
    Abstract: The present invention pertains to a curable composition comprising (a) at least one ethylene polymer, (b) less than 2 parts by weight of at least one monoperoxycarbonate for 100 parts by weight of constituent (a), (c) from 0.4 to less than 4 part by weight of at least one t-alkyl hydroperoxide for 100 parts by weight of constituent (b). It is also directed to a method for preventing scorching of a curable composition comprising an ethylene polymer, by adding a specific amount of t-alkyl hydroperoxide thereto and to a method for manufacturing a scorch-protected material.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 24, 2020
    Assignee: Arkema France
    Inventor: Chao Lu
  • Patent number: 10189976
    Abstract: The present invention pertains to a curable composition comprising (a) at least one ethylene polymer, (b) at least one monoperoxycarbonate, and (c) from 0.05 to less than 0.4 part by weight of at least one t-alkyl hydroperoxide for 100 parts by weight of constituent (b). It is also directed to a method for preventing scorching of a curable composition comprising an ethylene polymer by adding a specific amount of t-alkyl hydroperoxide thereto.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: January 29, 2019
    Assignee: ARKEMA FRANCE
    Inventor: Chao Lu
  • Patent number: 9617200
    Abstract: A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm. The fourth step is contacting the second reaction intermediate with an alkali metal hydroxide to form the amine.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: April 11, 2017
    Assignees: ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Bharati D. Chheda, John G. Pendergast, Jr., Sivam Rangavajjula, Daniel M. Trauth
  • Patent number: 9447253
    Abstract: A shape memory composition includes a high temperature ionomer having a glass transition temperature or a melting temperature of 100° C. or greater and a modulus at room temperature of 1×108 Pa or greater, the high temperature ionomer including a polymer with ionic units either within the backbone of the polymer or pendant to the backbone or both. The shape memory composition includes crystalline or glassy domains of a low molecular weight non-polymeric compound dispersed in the high temperature ionomer and interacting the ionic units of the high temperature ionomer to form a secondary network characterized by being a reversible network in that it is compromised by the heating of the low molecular weight non-polymeric compound to change out of its crystalline or glassy phase.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 20, 2016
    Assignee: The University of Akron
    Inventors: Robert Weiss, Ying Shi, Mitra Yoonesi
  • Patent number: 9410027
    Abstract: The present invention relates to a mixture which can be used as vulcanization accelerator, to a process for producing the mixture and to use of the mixture, to vulcanizates which comprise the said mixtures or which comprise corresponding individual constituents of the mixture, and also to vulcanizates which are produced with use of the said mixture.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: August 9, 2016
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Martin Säwe, Dietmar Hoff, Willi Grieshaber, Harald Kleinknecht
  • Patent number: 9221951
    Abstract: The present disclosure provides methods for modifying and cross-linking polybenzimidazoles, PBI. In one embodiment, the polybenzimidazole reacts with a compound, which has a halogen and a double bond functionality and which comprises a halogen and an organic group to form modified polymers by means of a nucleophilic substitution of the amine proton of the benzimidazole functionality in a solution, and a functional group is connected via each resulting free double bond and/or the polymers that are thus modified are cross-linked.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: December 29, 2015
    Assignee: WHITEFOX TECHNOLOGIES LIMITED
    Inventors: Stephan Rüdiger Blum, Katharina Klein, Wolfgang Bremser
  • Publication number: 20150137408
    Abstract: A method of producing a rubber molded article, involving utilizing a compound different from a compound that has been used as a crosslinking agent. The method of producing a rubber molded article includes a crosslinking step of crosslinking a rubber component by decomposing a compound to be used as a crosslinking agent for the rubber component, the compound including a structure represented by the following formula (I), in a rubber composition containing the rubber component and the compound, the rubber composition including a sulfur content of 2.0 wt % or less: ?-?-? . . . (I) (in the formula (I), ? represents a monovalent organic group, ? represents —N?N—, and ? represents hydrogen or a monovalent organic group).
    Type: Application
    Filed: April 25, 2013
    Publication date: May 21, 2015
    Inventors: Tomokazu Watanabe, Tetsuo Oohinata, Nahoko Kitajima
  • Patent number: 9029462
    Abstract: The present invention provides an adhesive composition that may improve both adhesiveness to a film layer and adhesiveness to a rubber layer, and an adhesion method using the same, as well as a laminate and a tire. The adhesive composition according to the present invention includes a rubber component, at least 80 mass % of which rubber component is an epoxidized natural rubber.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 12, 2015
    Assignee: Bridgestone Corporation
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Patent number: 9010393
    Abstract: Tyre and rubber composition for tyre, based on at least one isoprene elastomer (for example natural rubber), an inorganic filler as reinforcing filler (for example silica) and a coupling system which provides the bonding between the said reinforcing inorganic filler and the isoprene elastomer, the said coupling system comprising, in combination: as first coupling agent, a silane sulphide compound; as second coupling agent, an at least bifunctional organosilicon compound (for example an organosilane or an organosiloxane) which can be grafted to the elastomer by means of an azodicarbonyl functional group (—CO—N?N—CO—).
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: April 21, 2015
    Assignee: Michelin Recherche et Technique, S.A.
    Inventors: Jose Carlos Araujo Da Silva, Nathalie Binde, Pierre Robert, Sebastien Sterin, Anne Veyland
  • Publication number: 20150086735
    Abstract: A process for the continuous preparation of modified elastomeric polymers includes (i) providing and polymerizing at least one conjugated diene monomer and, optionally, one or more aromatic vinyl monomer in the presence of an anionic initiator and a compound according to Formula I, e.g. 2,2-di-(2-oxolanyl)propane or a derivative thereof, to provide a living anionic polymer; and (ii) adding a “sulfanylsilane” compound to the living anionic polymer. Elastomeric polymers obtainable according to the above process and compositions including the elastomeric polymer and, optionally, further constituents such as oil, filler and/or vulcanizing agent are described. A process for the preparation of a cross-linked elastomeric polymer that includes adding a vulcanizing agent to the elastomeric polymer, as well as articles and compositions that include the elastomeric polymer, the cross-linked elastomeric polymer or both are described.
    Type: Application
    Filed: March 20, 2012
    Publication date: March 26, 2015
    Inventors: Silvia Valenti, Evemarie Hamann, Norbert Jantsch, Sven Thiele
  • Publication number: 20150080151
    Abstract: A golf ball comprises a dynamically crosslinked thermoplastic material prepared by a method including: (a) partially crosslinking a rubber composition of a rubber polymer and two free radical initiators at a first crosslinking temperature to form a thermoplastic, partially crosslinked elastomer composition; (b) mixing a thermoplastic polymer composition with the thermoplastic, partially crosslinked rubber composition and heating the mixture to a second crosslinking temperature higher than the first crosslinking temperature and at which the thermoplastic polymer composition is liquid; and (c) continuously mixing the mixture while further crosslinking the rubber composition to form a thermoplastic material having a dispersed phase of crosslinked rubber composition in the thermoplastic polymer composition.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 19, 2015
    Applicant: NIKE, INC.
    Inventor: John C. Chen
  • Patent number: 8969455
    Abstract: The present invention is a method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C), at least one vulcanization accelerator (D) selected from guanidines, sulfenamides and thiazoles, and an organic acid compound (E), wherein the rubber composition is kneaded in plural stages, the rubber component (A), all or a part of the inorganic filler (B), all or a part of the silane coupling agent (C), the vulcanization accelerator (D) and the organic acid compound (E) are kneaded in the first stage of kneading, and the number of molecules X of the organic acid compound (E) in the rubber composition in the first stage is in a relation of the following formula [1] relative to the number of molecules Y of the vulcanization accelerator (D) therein.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: March 3, 2015
    Assignee: Bridgestone Corporation
    Inventors: Seiichi Katou, Satoshi Horie
  • Patent number: 8877831
    Abstract: Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method of cementing that comprises providing a cement composition containing cement, water, and a weighted elastomer. In addition, the cement composition may be introduced into a subterranean formation and allowed to set therein.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: November 4, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Craig W. Roddy, Jeffery D. Karcher, Rickey L. Morgan, D. Chad Brenneis
  • Patent number: 8846818
    Abstract: Thermoplastic polymer particles directly cross-linked together or cross-linked via a separate and independent polymer network to form an inter-penetrating network are disclosed herein, along with methods of manufacturing and use as interleaf tougheners of pre-pregs and composite articles.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: September 30, 2014
    Assignee: Cytec Technology Corp.
    Inventors: Yi Wei, Alexandre A. Baidak, James Senger
  • Patent number: 8846170
    Abstract: A sulfur-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: G[-CaH2a—S[C(?O)]bR]n wherein G is selected from the group consisting of: saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen, and saturated monocyclic silicone [RSiO—]n[R2SiO—]p group of valence n; wherein each R independently is a hydrogen or monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a and b independently is an integer wherein a is 2 to 6 and b is 0 or 1; p is an integer of from 0 to 3; and, n is an integer of from 3 to 6, with the provisos that when b is 0, R is a hydrogen atom, and when G is a non-halogenated, saturated monocyclic aliphatic group of 6 carbon atoms, n cannot be 3.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: September 30, 2014
    Assignee: Momentive Performance Materials Inc.
    Inventors: Richard W Cruse, William Michael York, Carla Recker, Thomas Kramer, Katharina Herzog
  • Patent number: 8829116
    Abstract: A method for producing an AB block copolymer with PDI is provided. The method comprises steps of: 1) reaction, in the presence of at least one free radical initiator, of a reaction mixture comprising a compound of formula (I), and 2) reaction, at a temperature of 45° C. or above, of a reaction mixture comprising an ethylenically unsaturated monomer B and, independent from that of step 1), a compound of formula (I) and the macroinitiator of step 1) in solvent(s) to obtain the AB block copolymer; wherein the weight ratio of the compound of formula (I) to the macroinitiator in step 2) is at least 1:1000.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: September 9, 2014
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Longlan Cui, Shaoguang Feng, Yanfei Liu, Tao Wang, Qingwei Zhang
  • Patent number: 8822577
    Abstract: The invention provides a rubber composition for golf balls which includes (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %, (B) an unsaturated carboxylic acid and/or a metal salt thereof, and (C) a diphenylamine of the general formula wherein R1 and R2 are each independently a hydrogen atom or a hydrocarbon group of 1 to 20 carbons, m is an integer from 1 to 5, and n is an integer from 1 to 4, with the proviso that if m and/or n is 2 or more, each occurrence of R1 and R2 may be the same or different. The golf ball rubber composition of the invention enables a high-quality molded and crosslinked product having a suitable hardness and a high resilience to be obtained.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 2, 2014
    Assignees: Bridgestone Sports Co., Ltd., Bridgestone Corporation
    Inventors: Yuichiro Ozawa, Tsuyoshi Nakajima, Yusuke Yamagata, Teppei Mori, Takahiro Iwai
  • Publication number: 20140206824
    Abstract: A method of curing a compound having a cross-linkable, unsaturated-chain polymer base and a curing system; the method employing microwaves as a form of energy to promote curing reactions; and the curing system including compounds of general formula (I) ([R1R2R3NR5 (NR4R6R7)n](n+1)+) y(n+1)Xy? (I) where: X is an atom or anionic group; R1, R2, R3, which are the same or different, are each CmH2m+1, where m is 1 to 3, or CH2CHCH2 or CHCHCH3, R4, R6, R7, which are the same or different, are each CH2CHCH2 or CHCHCH3; n is 0 or 1; y is 1 when n is 1; y is 1 or 2 when n is 0; R5 is an aliphatic group C15-C22 when n is 0; is an aliphatic group C8-C16 when n is 1; when n is 0, at least one of R1, R2, R3, R5 has a double bond.
    Type: Application
    Filed: June 15, 2012
    Publication date: July 24, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Valeria Grenci, Salvatore Cotugno
  • Patent number: 8735511
    Abstract: A curing resin composition that cures in two stages: photo cure and thermal cure, hardly contaminates a liquid or liquid crystals when in contact with, and provides high adhesive strength, particularly a curing composition that photocures sufficiently even when shadowed by TFT wires, a black matrix, etc. in photocuring; and a sealant, a sealant for ODF (one-drop-fill), and an LCD containing the curing resin composition.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: May 27, 2014
    Assignee: Adeka Corporation
    Inventors: Hirokatsu Shinano, Hiroya Fukunaga, Kazuyuki Itano
  • Patent number: 8664340
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: March 4, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Publication number: 20140048194
    Abstract: The present invention provides an adhesive composition that may improve both adhesiveness to a film layer and adhesiveness to a rubber layer, and an adhesion method using the same, as well as a laminate and a tire. The adhesive composition according to the present invention includes a rubber component, at least 80 mass % of which rubber component is an epoxidized natural rubber.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Patent number: 8653197
    Abstract: The disclosure is directed to a thermoplastic vulcanizate composition comprising a dynamically-cured rubber; from about 20 to about 300 parts by weight of a thermoplastic resin per 100 parts by weight rubber and from about 30 to about 250 parts by weight additional oil per 100 parts by weight rubber; wherein the rubber comprises a multimodal polymer composition cured with a curing agent, the multimodal polymer composition comprising 45 to 75 wt % of a first polymer fraction and 25 to 55 wt % of a second polymer fraction, each comprising ethylene, a C3-C10 alpha-olefin, and a non-conjugated diene. A method of producing the thermoplastic vulcanizate is also disclosed.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 18, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria D. Ellul, Periagaram S. Ravishankar, Jianya Cheng, Paul E. McDaniel
  • Patent number: 8563658
    Abstract: Embodiments of the invention provide block composites and their use in thermoplastic vulcanizate compounds.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: October 22, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Kim L. Walton, Brian W. Walther, Robert T. Johnston, Jose M. Rego, Xiaosong (Sharon) Wu
  • Patent number: 8563659
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 22, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Patent number: 8530585
    Abstract: The present invention provides a crosslinker used for crosslinking a polymer material having, in the molecule thereof, a multiple bond reactable with a nitrile oxide, the crosslinker including a bifunctional nitrile oxide having an aromatic nitrile oxide derivative structure in which one hydrogen atom of an aromatic ring is substituted with a nitrile oxide group and all hydrogen atoms at an ortho-position of the nitrile oxide group are substituted with a substituent other than a nitrile oxide group, wherein two such aromatic nitrile oxide derivative structures are bonded to either two oxy groups of a di-oxy structure having the two oxy groups or two carbonyl groups of a di-carbonyl structure having the two carbonyl groups.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: September 10, 2013
    Assignees: Toyoda Gosei Co., Ltd., Tokyo Institute of Technology
    Inventors: Akishige Seo, Hideyuki Imai, Naoki Iwase, Toshikazu Takata, Yasuhito Koyama, Morio Yonekawa
  • Patent number: 8507611
    Abstract: The present invention provides a production method of a crosslinkable polymer material which includes adding 2 -(glycidyloxy)-1-naphthonitrile oxide or 2-[5 -(ethoxycarbonyl)pentyloxy]-1-naphthonitrile oxide by an addition reaction to a polymer material having a multiple bond to which a nitrile oxide is added by an addition reaction so as to introduce a glycidyl group or an ethoxycarbonyl group into the polymer material.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: August 13, 2013
    Assignees: Toyoda Gosei Co., Ltd., Tokyo Institute of Technology
    Inventors: Akishige Seo, Hideyuki Imai, Naoki Iwase, Yusuke Katono, Toshikazu Takata, Yasuhito Koyama, Kaori Miura
  • Patent number: 8470946
    Abstract: Carbon nanotube (CNT) yarns and sheets having enhanced mechanical strength using infused and bonded nano-resins. A CNT yarn or sheet is surface-activated to produce open bonds in the CNT walls prior to resin infusion. The CNT yarn or sheet is infused with a low viscosity nano-resin that penetrates spaces between individual CNTs and is cured to cross-link and chemically bond to the CNT walls, either directly or through a functional molecule, to bond the individual CNTs or ropes to each other. The nano-resin can comprise dicyclopentadiene having an uncured viscosity near that of water. The cross-linking process involves ring-opening metathesis polymerization and catalysis of the nano-resin in combination with a functionalizing material such as norbornene, to enhance bonding between the carbon and nano-resin. The process increases load capability, tensile strength, and elastic modulus of the yarns and sheets, for use as a structural component in composite materials.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: June 25, 2013
    Assignee: The Regents of the University of California
    Inventor: Lawrence E. Carlson
  • Patent number: 8466226
    Abstract: There is provided an adhesive composition comprising (i) at least one film forming polymer, (ii) at least one crosslinker selected from the group consisting of polynitroso compounds, polynitroso precursors, and mixtures thereof, and (iii) at least one oxidizer, wherein the molar ratio of oxidizer to crosslinker is from 0.3 to 2.0. Also provided is a method of bonding substrates together using such a composition, and an article made using such a method.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: June 18, 2013
    Assignee: Rohm and Haas Company
    Inventors: Dean Edward Hoy, James Patrick Weir, Lipa Leon Roitman
  • Patent number: 8436105
    Abstract: The invention relates to a composition that can be thermally cured, containing relative to the total composition, a) 5 to 90% by weight of a diene-based polymer or copolymer containing an olefinic double bond and/or an aromatically substituted olefin, wherein the polymer or copolymer is liquid, or paste-like, at 22° C. and has a glass transition temperature between ?30° C. and +15° C., measured according to a DSC method; b) a vulcanization system selected from the group consisting of: b1) sulfur, and one or more accelerator(s), b2) peroxidic or disulfidic vulcanization systems, b3) quinones, quinone dioximes, or dinitrosobenzene.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: May 7, 2013
    Assignee: Henkel AG & Co. KGaA
    Inventors: Rainer Kohlstrung, Takehito Yamada
  • Patent number: 8420220
    Abstract: A rubber composition comprising 0.3 to 10 parts by mass of sulfur and 0.1 to 10 parts by mass of a sulfeneamide base vulcanization accelerator represented by the following Formula (I) based on 100 parts by mass of a rubber component: (wherein R1 to R10 are a hydrogen atom, a linear alkyl group having 1 to 4 carbon atoms or a branched alkyl group having 3 to 4 carbon atoms, and they may be the same or different; R11 is a hydrogen atom, a linear alkyl group having 1 to 10 carbon atoms or a branched alkyl group having 3 to 10 carbon atoms; R12 to R15 are a hydrogen atom, a linear alkyl group or alkoxy group having 1 to 4 carbon atoms or a branched alkyl group or alkoxy group having 3 to 4 carbon atoms, and they may be the same or different; and x represents an integer of 1 or 2).
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: April 16, 2013
    Assignee: Bridgestone Corporation
    Inventor: Yoshitaka Satou
  • Patent number: 8420738
    Abstract: A thermoplastic elastomer composition which has excellent cleanability and is suitable for use as a medical rubber supply. It is characterized by comprising a rubber ingredient dynamically crosslinked with a crosslinking agent and a matrix which comprises a thermoplastic resin and in which the crosslinked rubber ingredient has been dispersed, the crosslinking agent comprising a triazine derivative.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: April 16, 2013
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiroaki Nakano, Hideyuki Okuyama
  • Publication number: 20130085227
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer with a coordination catalyst to form a reactive polymer and reacting the reactive polymer with a nitrile compound containing a protected amino group.
    Type: Application
    Filed: November 27, 2012
    Publication date: April 4, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventor: BRIDGESTONE CORPORATION
  • Patent number: 8372932
    Abstract: The invention relates to a process for preparing a pressure-sensitive adhesive based on at least one polymer, in the course of which said at least one polymer is crosslinked, the polymer having functional groups Y and having been admixed, further, with at least one kind of functionalized particles which have at least one nonpolymeric base unit, wherein the particles having a surface modification of the base unit, the surface modification of the particles having at least one kind of functional groups X, and the crosslinking of the polymer being brought about at least in part by a reaction of the functional groups X of the particles and the functional groups Y of the polymer, and further to pressure-sensitive adhesives based on at least one crosslinked polymer component, the crosslinking of the polymer component being brought about at least in part by incorporation of the functionalized particles, the particles having at least one nonpolymeric base unit and also a surface modification of this base unit, and the
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: February 12, 2013
    Assignee: tesa SE
    Inventors: Thilo Dollase, Aranzazu Escudero Vallejo, Bernd Lühmann
  • Patent number: 8349963
    Abstract: An elastic material for use in an absorbent article is provided. The elastic material contains a crosslinked network formed from a linear block copolymer having a monoalkenyl aromatic midblock positioned between conjugated diene endblocks (e.g., butadiene-styrene-butadiene (“B-S-B”) triblock copolymer). Prior to crosslinking, such linear block copolymers have a relatively low viscosity and thus may be readily formed into a precursor elastic material (e.g., film, strands, web, etc.) that is subsequently crosslinked to achieve the desired elastic and mechanical properties. Crosslinking is typically achieved through the formation of free radicals (unpaired electrons) that link together to form a plurality of carbon-carbon covalent bonds at the conjugated diene endblocks.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: January 8, 2013
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Oomman P. Thomas, John E. Flood
  • Patent number: 8338543
    Abstract: Thermoplastic vulcanizate elastomer obtained by dynamic vulcanization of a heterophasic polyolefin composition in presence of at least (i) an alkenyl-substituted alkoxysilane grafting agent and (ii) water; wherein said heterophasic polyolefin composition has flexural modulus equal to or lower than 150 MPa, and comprises: (a) a crystalline propylene homopolymer or copolymer of propylene with up to 15% of ethylene or other alpha-olefin comonomer(s), or their combinations, and (b) a copolymer or a composition of copolymers of ethylene with other alpha-olefins, containing from 15% to 40% of ethylene, said thermoplastic vulcanizate elastomer having compression set values in the range from 45-65%, the ratio of elongation at break to compression set values over 10 and hardness shore A values below 90.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 25, 2012
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Gilberto Moscardi, Enrico Costantini
  • Patent number: 8236882
    Abstract: A rubber mixture which exhibits reliable processability contains (A) a rubber or mixture of rubbers, (B) a filler, (C) at least one organosilane, (D) a thiuram accelerator, and (E) a nitrogen-containing co-activator. A weight ratio of thiuram accelerator (D) to nitrogen-containing co-activator (E) is equal to or greater than 1.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: August 7, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Oliver Klockmann, Andre Hasse, Hans-Detlef Lughinsland
  • Publication number: 20120165475
    Abstract: The invention provides a rubber composition for golf balls which includes (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %, (B) an unsaturated carboxylic acid and/or a metal salt thereof, and (C) two or more organic peroxides which include (C-1) an organic peroxide having a solubility parameter (SP) of 9 or less and (C-2) an organic peroxide having a solubility parameter (SP) of 10 or more. The golf ball rubber composition of the invention enables a high-quality molded and crosslinked product having a suitable hardness and a high resilience to be obtained.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Applicants: BRIDGESTONE CORPORATION, BRIDGESTONE SPORTS CO., LTD.
    Inventors: Yuichiro OZAWA, Jun SHINDO, Yasuo FUKUSHIMA
  • Patent number: 8207276
    Abstract: A dip-forming latex composition comprising a conjugated diene rubber latex and an organic peroxide, wherein the residual effective activity of organic peroxide defined as the ratio of organic peroxide retaining reactivity to the whole organic peroxide contained in the latex composition is 35% or higher. The invention provides a dip-formed article, which exhibits good softness of touch and comfortable fittingness and excellent in tensile strength and resistance to flexing fatigue; which itself hardly suffers coloration especially when the article thereof is worn as a glove for continuous operation for a long time and is hard to reduce adhesiveness and following characteristics to hand while wearing it; and a dip-forming latex composition capable to give such an article by dip-forming thereof.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: June 26, 2012
    Assignee: Zeon Corporation
    Inventors: Kazumi Kodama, Shinji Kato
  • Patent number: 8178625
    Abstract: The instant disclosure is directed to a thermoplastic vulcanizate composition comprising a dynamically-cured rubber; from about 20 to about 300 parts by weight of a thermoplastic resin per 100 parts by weight rubber and from about 30 to about 250 parts by weight additional oil per 100 parts by weight rubber; wherein the rubber comprises a multimodal polymer composition cured with a curing agent, the multimodal polymer composition comprising 45 to 75 wt % of a first polymer fraction and 25 to 55 wt % of a second polymer fraction, each comprising ethylene, a C3-C10 alpha-olefin, and a non-conjugated diene, wherein the polymer fractions have been polymerized using a Ziegler-Natta catalyst system, wherein the first polymer fraction has a Mooney viscosity of greater than or equal to about 150 ML(1+4@125° C.), and the second polymer fraction has a Mooney viscosity of about 20 ML to about 120 ML; and about 10 phr to about 50 phr of an extender oil.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: May 15, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria D. Ellul, Periagaram S. Ravishankar, Jianya Cheng, Paul E. McDaniel
  • Publication number: 20120068314
    Abstract: The present invention relates to an electronic device comprising at least one dielectric layer, said dielectric layer comprising a crosslinked organic compound based on at least one compound which is radically crosslinkable and a method of making the electronic device.
    Type: Application
    Filed: May 20, 2010
    Publication date: March 22, 2012
    Applicants: POLYERA CORPORATION, BASF SE
    Inventors: Marcel Kastler, Silke Annika Koehler
  • Patent number: 8124206
    Abstract: A sulfur-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: G[-CaH2a—S[C(?O)]bR]n wherein G is selected from the group consisting of: saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen, and saturated monocyclic silicone [RsiO—]n[R2SiO—]p group of valence n; wherein each R independently is a hydrogen or monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a and b independently is an integer wherein a is 2 to 6 and b is 0 or 1; p is an integer of from 0 to 3; and, n is an integer of from 3 to 6, with the provisos that when b is 0, R is a hydrogen atom, and when G is a non-halogenated, saturated monocyclic aliphatic group of 6 carbon atoms, n cannot be 3.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: February 28, 2012
    Assignee: Momentive Performance Materials, Inc.
    Inventors: Richard W. Cruse, William Michael York, Carla Recker, Thomas Kramer, Katharina Herzog
  • Publication number: 20120046418
    Abstract: The present invention provides a production method of a crosslinkable polymer material which includes adding 2-(glycidyloxy)-1-naphthonitrile oxide or 2-[5-(ethoxycarbonyl)pentyloxy]-1-naphthonitrile oxide by an addition reaction to a polymer material having a multiple bond to which a nitrile oxide is added by an addition reaction so as to introduce a glycidyl group or an ethoxycarbonyl group into the polymer material.
    Type: Application
    Filed: February 21, 2011
    Publication date: February 23, 2012
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYODA GOSEI CO., LTD
    Inventors: Akishige SEO, Hideyuki Imai, Naoki Iwase, Yusuke Katono, Toshikazu Takata, Yasuhito Koyama, Kaori Miura
  • Patent number: 8106130
    Abstract: A modified conjugated diene polymer comprises a modifying group based on a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in a molecule which bonds to a conjugated diene polymer obtained by polymerization of a conjugated diene compound or a conjugated diene polymer obtained by copolymerization of a conjugated diene compound and an aromatic vinyl compound. The process for producing the modified conjugated diene polymer comprises the steps of: polymerizing a conjugated diene compound or copolymerizing a conjugated diene compound and an aromatic vinyl compound in a hydrocarbon solvent using an alkali metal initiator and/or an alkaline earth metal initiator; and reacting active terminals of the resulting polymer with a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in the molecule.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: January 31, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Ryoko Fukuoka, Haruo Yamada, Norifusa Ishimura
  • Patent number: 8071676
    Abstract: A primary modified polymer composed of (1) a hydrogenated polymer obtained by hydrogenating at least one non-hydrogenated polymer selected from the group consisting of polymers comprising conjugated diene monomer units and copolymers comprising conjugated diene monomer units and vinyl aromatic monomer units and (2) groups of a primary modifier having a functional group which are bonded to the polymer (1), which has a specific vinyl aromatic monomer unit content, a specific vinyl aromatic polymer block content, a specific weight-average molecular weight, and a specific degree of hydrogenation of the double bonds of conjugated diene monomer units; a secondary modified polymer obtained by reacting a primary modified polymer composed of (?) a base polymer and (?) groups of a primary modifier having a functional group which are bonded to the polymer (?) with a secondary modifier; and compositions comprising the primary or secondary modified polymer and at least one other component.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: December 6, 2011
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Takaaki Matsuda, Shigeki Takayama, Toshinori Shiraki, Shigeo Nakajima, Yasuhiro Kusanose
  • Patent number: 8063155
    Abstract: The invention relates to a sulphur donor curing agent comprising a combination of between 10 and 90 wt % of a mixture of polysulphides of poly(alkyl phenol) and between 90 and 10 wt. % a compound of the formula R?NHCONHR? were R? and R? are the same or different and are hydrogen oa an alkyl or aryl radical having 1 to 20 carbon atoms and methods of curing an EPDM-type rubber elastomer with the composition which presents no risk of the formation of nitrosamines.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: November 22, 2011
    Assignee: Arkema France
    Inventor: Thierry Aubert
  • Patent number: 8044147
    Abstract: A nitrile group-containing copolymer rubber comprising 10 to 40 wt % of ?,?-ethylenically unsaturated nitrile unit (a), 10 to 60 wt % of ?,?-ethylenically unsaturated carboxylic acid ester unit (b), and 20 to 70 wt % in total of conjugated diene unit (c) and saturated conjugated diene unit (d), wherein a content ratio “x” of a conjugated diene unit (c) based on the total content of said conjugated diene unit (c) and said saturated conjugated diene unit (d) is 0.08 or smaller, and “x·A” defined as a product of said ratio “x” and a content ratio “A” (%) of said ?,?-ethylenically unsaturated nitrile unit (a) is 1.5 or smaller. According to the present invention, a nitrile group-containing copolymer rubber capable to provide a rubber vulcanizate highly balanced in mechanical strength, heat aging resistance, oil resistance, cold resistance and ozone resistance, and a vulcanizable rubber composition using the rubber can be provided.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: October 25, 2011
    Assignee: Zeon Corporation
    Inventors: Hiroyasu Nagamori, Akira Tsukada, Takafumi Kawanaka
  • Publication number: 20110224380
    Abstract: The present invention provides a crosslinker used for crosslinking a polymer material having, in the molecule thereof, a multiple bond reactable with a nitrile oxide, the crosslinker including a bifunctional nitrile oxide having an aromatic nitrile oxide derivative structure in which one hydrogen atom of an aromatic ring is substituted with a nitrile oxide group and all hydrogen atoms at an ortho-position of the nitrile oxide group are substituted with a substituent other than a nitrile oxide group, wherein two such aromatic nitrile oxide derivative structures are bonded to either two oxy groups of a di-oxy structure having the two oxy groups or two carbonyl groups of a di-carbonyl structure having the two carbonyl groups.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 15, 2011
    Applicants: TOYODA GOSEI CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Akishige SEO, Hideyuki IMAI, Naoki IWASE, Toshikazu TAKATA, Yasuhito KOYAMA, Morio YONEKAWA
  • Patent number: 8017694
    Abstract: Nonconjugated conductive polymers, which are all polymers that have a ratio of double bonds to total bonds of less than ½ are doped with iodine to produce compositions with unexpected characteristics in this invention. The mechanical and elastomeric properties of a nonconjugated polymer can be enhanced by doping the polymer with an electron acceptor such as iodine, in order to cure the polymer. Among the nonconjugated polymers are the cis-1,4-polyisoprene, cis-1,4 polybutadiene, styrene-butadiene copolymers (SBR), ethylene-propylene-diene monomer and poly (?-pinene). A heated mixture of iodine and sulfur produces a faster rate of vulcanization of rubber than using sulfur alone.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: September 13, 2011
    Inventor: Mrinal Thakur
  • Patent number: 8017696
    Abstract: Vulcanizable elastomeric compositions and vulcanizates are prepared by employing a titanium compound. The titanium compound is believed to enhance the reaction between a silica particle and a silica-reactive compound.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: September 13, 2011
    Assignee: Bridgestone Corporation
    Inventors: Chenchy Jeffrey Lin, Christine Rademacher, Shunji Araki
  • Patent number: 7976921
    Abstract: A release agent composition includes a poly(meth)acrylate (A) containing a structural unit (1) represented by the following formula (1); in which R1 represents hydrogen or a methyl group and R2 represents a long-chain alkyl group having 12 to 28 carbon atoms, a liquid polymer (B) and a crosslinking agent (C), wherein at least one of the poly(meth)acrylate (A) and the liquid polymer (B) has a reactive functional group, and the crosslinking agent (C) is a compound having a functional group capable of reacting with the reactive functional group.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: July 12, 2011
    Assignee: Lintec Corporation
    Inventors: Shiori Beppu, Toshio Sugizaki