Material Contains Sulfur Or Inorganic Sulfur Compound Patents (Class 526/234)
-
Patent number: 11118040Abstract: Provided is a polyethylene resin film exhibiting more improved transparency while exhibiting excellent processability and mechanical properties. The polyethylene resin film having a density of 0.910 g/cm3 to 0.930 g/cm3, and a haze of 10% or less at a thickness of 90 ?m to 110 ?m includes a first polyethylene resin and a second polyethylene resin at a weight ratio of 6:4 to 8:2, wherein the first polyethylene resin has an MFRR (21.6/2.16) value of 27 to 40, and the second polyethylene resin has an MFRR (21.6/2.16) value of 15 to 23, and the MFRR (21.6/2.16) value is obtained by dividing a melt flow rate (MFR21.6) measured at a temperature of 230° C. under a load of 21.6 kg in accordance with ISO 1133 by a melt flow rate (MFR2.16) measured at a temperature of 230° C. under a load of 2.16 kg in accordance with ISO 1133.Type: GrantFiled: December 3, 2018Date of Patent: September 14, 2021Inventors: Sol Cho, Yi Young Choi, Chang Hwan Jang, Seyoung Kim, Sung Min Lee, Seul Ki Im, Jinyoung Lee, Hyojoon Lee
-
Patent number: 10736820Abstract: Radically polymerizable dental material, which contains at least one sulphonic acid ester of Formula 1: in which A is H, CN, an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical or a combination thereof; X is COO— or —CON(R1)— or is absent; B is an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical, or a combination thereof; R1 is hydrogen or an aromatic, cycloaliphatic, linear or branched aliphatic C1-C10-hydrocarbon radical; m is an integer from 1 to 6, n is an integer from 1 to 6 and p is an integer from 1 to 6; wherein m and p cannot simultaneously be greater than 1. The compounds of Formula 1 are active as chain transfer agents in radical polymerization.Type: GrantFiled: May 2, 2016Date of Patent: August 11, 2020Assignees: Ivoclar Vivadent AG, Technicshe Universität WienInventors: Norbert Moszner, Iris Lamparth, Urs Karl Fischer, Kai Rist, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler
-
Patent number: 10280101Abstract: The disclosed technology relates to water soluble, or partially water soluble, chain transfer agents for preparing water soluble polymers by Reversible Addition-Fragmentation Chain Transfer (“RAFT”) polymerization in an aqueous medium.Type: GrantFiled: April 22, 2016Date of Patent: May 7, 2019Assignee: The Lubrizol CorporationInventors: Cory G. Miller, Hyungsoo Kim
-
Patent number: 9994660Abstract: The (meth)acrylic acid-based copolymer of the present invention includes, as essential structural units: 16 mol % or more but 24 mol % or less of a structural unit (a) derived from a monomer represented by Formula (1): wherein R2 represents a hydrogen atom or a methyl group; and X and Y each independently represent a hydroxy group, a sulfonic acid group, or a sulfonic acid salt group, at least one of X and Y representing a sulfonic acid group or a sulfonic acid salt group; and 76 mol % or more but 84 mol % or less of a structural unit (b) derived from (meth)acrylic acid or a salt thereof, each based on 100 mol % of all the structural units derived from monomers, the copolymer comprising a main chain having a sulfonic acid group or a sulfonic acid salt group at at least one end thereof, the copolymer having a weight average molecular weight of 1000 to 18000.Type: GrantFiled: March 29, 2013Date of Patent: June 12, 2018Assignee: Nippon Shokubai Co., Ltd.Inventors: Masato Nakano, Yuki Sano
-
Patent number: 9932425Abstract: Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.Type: GrantFiled: December 15, 2014Date of Patent: April 3, 2018Assignee: Dow Global Technologies LLCInventors: Anthony J. Castelluccio, Jeffrey J. Dean, Alec Y. Wang, Lindsey A. Clark, Pradeep Jain, Roger L. Kuhlman, Angela N. Taha, Larry S. Green, Gary R. Marchand, Sean W. Ewart, Jeffrey A. Sims, Chris E. Blaschke, Brandon Fails
-
Patent number: 9629254Abstract: Disclosed herein are embodiments of an epoxy casting resin system which can be used to at least partially cover an electronic component or mechanism. In some embodiments, the epoxy resin can have a low viscosity, while maintaining advantageous physical, thermal, and electrical properties. Further described are methods for making embodiments of the epoxy casting resin.Type: GrantFiled: March 13, 2014Date of Patent: April 18, 2017Assignee: PLASMA SYSTEMS HOLDINGS, INC.Inventors: Michael Forney, James Stameson
-
Patent number: 9080096Abstract: The present invention relates to a new type of oil displacement agent and the process for preparing the same. The oil displacement agent is formed of a polyacrylamide-based polymer characterized by a partly crosslinked and partly branched structure, wherein said polyacrylamide-based polymer is obtained by aqueous copolymerization of acrylamide and N,N-dimethylaminoethyl methacrylate as a functional monomer, in the presence of a redox initiator system.Type: GrantFiled: January 14, 2011Date of Patent: July 14, 2015Assignees: GEOSCIENCE RESEARCH INSTITUTE OF SHENGLI OILFIELD BRANCH, SINOPEC GEOSCIENCE RESEARCH INSTITUTE, SICHUAN UNIVERSITYInventors: Huanquan Sun, Zhenquan Li, Xulong Cao, Guangsu Huang, Xinwang Song, Xiaohong Cui, Kun Liu, Jing Zheng, Xiaoyan Chen, Zhiqing Su, Zuming Jiang, Jinrong Wu
-
Patent number: 9023962Abstract: A process of synthesizing poly(2,3,3,3-tetrafluoropropene), comprising reacting 2,3,3,3-tetrafluoropropene monomers in a reaction medium in the presence of an initiator, wherein the initiator is added to the reaction medium in multiple portions at different times during the process.Type: GrantFiled: March 7, 2013Date of Patent: May 5, 2015Assignee: Honeywell International Inc.Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
-
Publication number: 20150112033Abstract: The present invention concerns a method for preparing a polymer comprising a step of radical polymerisation of monomers comprising at least monomers (M1) chosen from acrylic acid, one of the salts of same, or the mixture thereof, in which said radical polymerisation step is carried out: continuously; at a pH which remains between 3 and 5 during the polymerization step; in the presence of a metabisulfite/persulfate redox pair, for example the sodium metabisulfite/sodium persulfate pair, as a radical initiator, with a metabisulfite/persulfate molar ratio of between 1 and 3.5 and an initiator/monomer molar percentage of between 5% and 18%.Type: ApplicationFiled: April 3, 2013Publication date: April 23, 2015Applicant: RHODIA OPERATIONSInventors: Patrick Ferlin, James Wilson, Fadila Benachich
-
Patent number: 8946360Abstract: The present invention relates to a process for continuously preparing polymer by RAFT solution polymerization, the process comprising: introducing into a flow reactor a reaction solution comprising one or more ethylenically unsaturated monomers, RAFT agent, non-reactive solvent and free radical initiator; and promoting RAFT polymerization of the one or more ethylenically unsaturated monomers within the reactor so as to form a polymer solution that flows out of the reactor.Type: GrantFiled: August 12, 2011Date of Patent: February 3, 2015Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: John Chiefari, Christian Hornung, Simon Saubern
-
Patent number: 8940844Abstract: 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: GrantFiled: April 17, 2013Date of Patent: January 27, 2015Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
-
Publication number: 20140370114Abstract: Disclosed herein is a preparation method of homopolymer nanoparticles without using a surfactant. The homopolymer nanoparticles prepared thereby are expected to be widely used not only as a template of a semiconductor metal oxide, a drug delivery system (DDS), an electron transport layer (ETL), and a seed having vertical structural shape, but also in a high precision field such as replacement of an organic device polystyrene bead film.Type: ApplicationFiled: June 13, 2014Publication date: December 18, 2014Inventors: Jae-Suk LEE, Santosh Kumar, Dong Woo Kim, Mohammad Changei, Hong-Joon Lee
-
Publication number: 20140357821Abstract: The present invention provides a low-temperature-resistant fluorine-containing elastomer formed through polymerization of the comonomers: 40-80 mol % 1,1-vinylidene fluoride, 2-10 mol % tetrafluoroethylene, 10-30 mol % perfluoro(alkyl vinyl ether), and 1-10 mol % vulcanization monomer. The present invention further provides a preparation method of the fluorine-containing elastomer. In the present invention, on basis of a large number of experiments, the contents of the comonomers of the fluorine-containing elastomer are adjusted, so that the low temperature performance thereof is significantly improved, and the low-temperature retraction temperature TR-10<?40. Moreover, the rate of the volume change of the fluorine-containing elastomer in methanol decreases, and the oil resistance and the solvent resistance are improved, thereby improving the oil resistant performance and solvent resistant performance of the fluorine-containing elastomer.Type: ApplicationFiled: August 27, 2012Publication date: December 4, 2014Inventors: Shaochun Zhao, Jun Lan, Jianxin Zhang, Bin Liu, Bin Li, Jiayong Gao, Xianrong Wang
-
Patent number: 8895680Abstract: The present invention relates to redox-curing type nonaqueous curable compositions having: at least one liquid radical polymeric monomer (a); an organic peroxide (b); and a powdered water-soluble reducing compound (c), where the powdered water-soluble reducing compound (c) is dispersed in the liquid radical polymeric monomer (a).Type: GrantFiled: August 8, 2005Date of Patent: November 25, 2014Assignee: Kuraray Noritake Dental Inc.Inventors: Mitsunobu Kawashima, Aki Takase
-
Publication number: 20140316090Abstract: The present invention can provide a methacrylic resin which has excellent transparency and color and less defects such as fish eyes and thus suitable for optical films by adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization: (n=10 to 60 mol %, m=40 to 90 mol %, R1 is hydrogen or a methyl group, R2 is an alkyl group having 1 to 8 carbon atoms, and M is an alkali metal or alkaline earth metal or NH4.Type: ApplicationFiled: November 6, 2012Publication date: October 23, 2014Inventors: Sayako Uchizawa, Akira Matsuo, Yasuo Matsumura, Ayumu Komata
-
Patent number: 8829125Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.Type: GrantFiled: June 26, 2013Date of Patent: September 9, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
-
Publication number: 20140051818Abstract: A process of synthesizing poly(2,3,3,3-tetrafluoropropene), comprising reacting 2,3,3,3-tetrafluoropropene monomers in a reaction medium in the presence of an initiator, wherein the initiator is added to the reaction medium in multiple portions at different times during the process.Type: ApplicationFiled: March 7, 2013Publication date: February 20, 2014Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
-
Publication number: 20130345381Abstract: The invention relates to a method for synthesizing 2,3,3,3-tetrafluoropropene containing fluoropolymers using non-fluorinated surfactants in an emulsion process. No fluorinated surfactants are used in the process, and a persulfate initiator is used as the primary initiator. The process produces high molecular weight copolymers.Type: ApplicationFiled: March 15, 2012Publication date: December 26, 2013Inventors: Ramin Amin-Sanayei, Caiping Lin, Cedric Airaud
-
Publication number: 20130289214Abstract: The present invention relates to a method for preparing a polymer based on N-vinyl lactam monomer units, which comprises a step (E) for controlled radical polymerization of a composition comprising: monomers containing (and most often consisting of) N-vinyl lactam monomers, either identical or different (and generally identical); an agent for controlling the radical polymerization, for example comprising a thiocarbonylthio group —S(C?S)—; and a radical polymerization initiator which is a redox system comprising a reducing agent (Red) and an oxidizing agent (Ox).Type: ApplicationFiled: September 22, 2011Publication date: October 31, 2013Applicants: Centre National De La Recherche Scientifique (C.N.R.S.), Rhodia OperationsInventors: Mathias Destarac, Aymeric Guinaudeau, Stéphane Mazieres, James Wilson
-
Patent number: 8541332Abstract: Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high.Type: GrantFiled: June 3, 2011Date of Patent: September 24, 2013Assignee: PetroChina Company LimitedInventors: Zhifei Li, Kuilong Tan, Hao Wang, Jianjun Yi, Qinghong Xu, Weisong Cui, Wei Bai, Xinyuan Liu, Pu Xu, Wanqing Ju
-
Patent number: 8501882Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.Type: GrantFiled: December 19, 2011Date of Patent: August 6, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
-
Patent number: 8440772Abstract: 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: GrantFiled: April 28, 2011Date of Patent: May 14, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
-
Publication number: 20130090439Abstract: The present invention relates to methods of producing polymerized 2,3,3,3-tetrafluoropropene (poly-1234yf) using one or a combination of the techniques provided herein. In certain embodiments, such techniques include (1) emulsion polymerization; (2) suspension polymerization; (3) solution polymerization; (4) supercritical carbon dioxide polymerization; (5) transition metal catalyzed polymerization; (6) radiation or thermal polymerization; and combinations thereof. A wide array of initiators, catalysts, and solvents may be used in such polymerization processes and may include, but are not limited to, (1) radical initiators; (2) ionic initiators; and (3) single-site and multiple-site catalysts.Type: ApplicationFiled: October 4, 2012Publication date: April 11, 2013Applicant: HONEYWELL INTERNATIONAL INC.Inventor: HONEYWELL INTERNATIONAL INC.
-
Publication number: 20130071930Abstract: Polyester compositions and functionalized polyester compositions are provided along with methods of making the compositions as well as methods of using the compositions, for example as a tissue engineering bioscaffold and as a drug-delivery vehicle.Type: ApplicationFiled: January 25, 2011Publication date: March 21, 2013Applicant: University of Pittsburgh - of the Commonwealth System of Higher EducationInventors: Hunghao Chu, Yadong Wang, Zhengwei You
-
Publication number: 20130044365Abstract: A method of preparing a monodisperse particle may include mixing at least two types of monomers in a solvent, placing an initiator in the solvent, and forming a particle having a copolymer shape by polymerizing the at least two types of monomers. The particle may have a size controlled by a content of the at least two types of monomers.Type: ApplicationFiled: June 14, 2012Publication date: February 21, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Chang Gyun Shin, HongShik Shim, Seog-jin Jeon
-
Publication number: 20120244297Abstract: A vinyl chloride-based resin latex which froths little when unreacted monomer remaining in the latex are recovered under heat and reduced-pressure conditions, and a thermal transfer image-receiving sheet which has satisfactory water resistance, does not yellow during storage, and gives images having excellent durability and light resistance. The invention provides a vinyl chloride-based resin latex contains a copolymer containing a vinyl chloride and an epoxy-group-containing vinyl or contains vinyl chloride, an epoxy-group-containing vinyl, and a carboxylic acid vinyl ester, wherein a content of the epoxy-group-containing vinyl is 0.1% by weight or more but less than 3% by weight, and wherein the latex contains no surfactant, and has a solid concentration of 25% by weight or more; a process for producing the latex; and a thermal transfer image-receiving sheet obtained using the latex.Type: ApplicationFiled: December 7, 2010Publication date: September 27, 2012Applicant: Tosoh CorporationInventors: Haruyasu Kitaguchi, Shinichi Yoshida
-
Publication number: 20120157596Abstract: A polymer and methods of producing the polymer for use, for instance, in mineral processing, including kaolin and calcium carbonate beneficiation are discussed. The method of producing the polymer can include polymerizing at least one monomer in the presence of a polymerization initiator, a chain transfer agent, and a polymerization stabilizer to produce a polymer containing at least one carboxylic acid, wherein the at least one monomer includes an unsaturated carboxylic acid monomer, and wherein the polymer containing at least one carboxylic acid is stable and has a molecular weight of about 1000 g/mol to about 10,000 g/mol.Type: ApplicationFiled: December 16, 2011Publication date: June 21, 2012Applicant: BASF CorporationInventors: Luiz Antonio M. da SILVA, Juraci Marques da SILVA, Adilson Ignacio da SILVA, Antonio Severo Porto Junior
-
Publication number: 20120148856Abstract: Heat-curing reactive composition based on natural and/or synthetic polymers containing olefinic double bonds, and vulcanizing agents, which composition contains a) at least one liquid cis-1,4-polyisoprene with a weight-average molecular weight of between 20000 and 70000, b) a vulcanization system, c) at least one polybutadiene liquid at 22° C., in which the liquid cis-1,4-polyisoprene a) constitutes a proportion of the entire composition in the range from 9 to 15 wt. %, the vulcanization system b) is selected from the group consisting of: b1) sulfur and one or more vulcanization accelerator(s), b2) peroxide or disulfide vulcanization systems, b3) quinones, quinone dioximes or dinitrosobenzene, and the polybutadiene c) liquid at 22° C. constitutes a proportion of the entire composition in the range from 16 to 29 wt %.Type: ApplicationFiled: February 17, 2012Publication date: June 14, 2012Applicant: Henkel AG & Co. KGaaInventors: Rainer Kohlstrung, Klaus Rappmann
-
Patent number: 8182916Abstract: An object of the present invention is to provide a water absorbing agent having a low amount of residual monomer, small variance of the amount of residual monomer among ranges of particle size distribution and favorable absorption properties, and being sanitary; an absorbing article; and a method for the production of a water absorbing agent. The water absorbing agent of the present invention has the amount of residual monomer of not higher than 500 ppm, and a residual monomer index of not greater than 0.30.Type: GrantFiled: February 10, 2006Date of Patent: May 22, 2012Assignee: Nippon Shokubai Co., Ltd.Inventors: Kazuki Kimura, Shin-ichi Fujino, Katsuyuki Wada, Kunihiko Ishizaki
-
Publication number: 20110294923Abstract: The invention relates to a process for the preparation of a polymerization mixture suitable as a dispersant and comprising a copolymer. In the process, a vinyloxyalkylpolyether derivative is reacted with an acid monomer derivative with formation of the copolymer in the presence of a free radical polymerization initiator by free radical polymerization, the free radical polymerization taking place in a medium which contains less than 25% by weight of water and in totality more than 60% by weight of copolymer, vinyloxyalkylpolyether derivative and acid monomer derivative.Type: ApplicationFiled: November 25, 2009Publication date: December 1, 2011Inventors: Gerhard Albrecht, Herbert Hommer, Thomas Wohlhaupter
-
Patent number: 8022030Abstract: The present invention relates to the field of perfumery. More particularly, it concerns co-polymers, derived from a maleic anhydride derivative and a ethylenic derivative, comprising at least one ?-oxy or ?-thio carbonyl moiety capable of liberating an active molecule such as, for example, an ?,?-unsaturated ketone, aldehyde or carboxylic ester. The present invention concerns also the use of polymers or co-polymers in perfumery as well as the perfuming compositions or perfumed articles comprising the invention's compounds.Type: GrantFiled: October 5, 2007Date of Patent: September 20, 2011Assignee: Firmenich SAInventors: Damien Berthier, Andreas Herrmann
-
Publication number: 20110183880Abstract: The present invention provides a (meth)acrylic acid-based copolymer useful to a detergent which is excellent in efficient removal capability of soil of clothes (in particular, hydrophobic soil such as collar dirt or greasy dirt), and prevention capability of soil redeposition, not to re-adhere the soil to laundries, even in carrying out washing with small amount of water.Type: ApplicationFiled: January 30, 2007Publication date: July 28, 2011Applicant: Nippon Shokubai Co., LtdInventors: Atsuro Yoneda, Akiko Hemmi
-
Publication number: 20110136999Abstract: Fluorosilicon polymers are disclosed that are prepared by a process comprising reacting a) iodinated oligomers having copolymerized units of perfluoro(methyl vinyl ether) and vinylidene fluoride or tetrafluoroethylene that contain 40-90 mole percent copolymerized units of vinylidene fluoride or tetrafluoroethylene and 10-60 mole percent copolymerized units of perfluoro(methyl vinyl ether), said oligomers having two functional endgroups and having a number average molecular weight between 1000 and 25,000 with b) a methoxyvinyl silane or an ethoxyvinyl silane to form a silicon-containing polymeric adduct that is further reacted with an acid to form a crosslinked fluorinated polymer.Type: ApplicationFiled: December 8, 2009Publication date: June 9, 2011Applicant: DUPONT PERFORMANCE ELASTOMERS L.L.C.Inventors: Ming-Hong Hung, Bruno Ameduri
-
Patent number: 7879527Abstract: A method of forming a positive resist composition of the present invention includes a step (I) of passing a positive resist composition, which is obtained by dissolving a resin component (A) that displays increased alkali solubility under the action of acid and an acid generator component (B) that generates acid upon exposure in an organic solvent (S), through a filter (f1) equipped with a nylon membrane, wherein the resin component (A) is a copolymer containing at least two structural units obtained by polymerizing at least one monomer in the presence of acid. According to the present invention, it is possible to provide a method of producing a positive resist composition, a positive resist composition, and a method of forming a resist pattern that are capable of forming a resist pattern with reduced levels of both bridge-type defects and reprecipitation-type defects.Type: GrantFiled: May 18, 2006Date of Patent: February 1, 2011Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Masaaki Muroi, Kota Atsuchi, Takahiro Nakamura, Masakazu Yamada, Kensuke Saisyo
-
Publication number: 20090176952Abstract: To provide a method for producing a tetrafluoroethylene copolymer, wherein the polymerization rate is excellent, the copolymer to be obtained is excellent in mechanical properties such as the tensile strength, it is free from coloration and can be melt-molded. A method for producing a melt-moldable tetrafluoroethylene copolymer comprising repeating units (a) based on tetrafluoroethylene and repeating units (b) based on another fluoromonomer, wherein based on the total mass of the repeating units (a) and the repeating units (b), the amount of the repeating units (a) is from 97.3 to 99.5 mass %, and the volume flow rate is from 0.1 to 1000 mm3/s, characterized by radical suspension-polymerizing tetrafluoroethylene and the fluoromonomer in an aqueous medium in the presence of a radical polymerization initiator and at least one chain transfer agent selected from the group consisting of methane, ethane, a hydrochlorocarbon, a hydrofluorocarbon and a hydrochlorofluorocarbon.Type: ApplicationFiled: March 11, 2009Publication date: July 9, 2009Applicant: Asahi Glass Company, LimitedInventors: Atsushi Funaki, Shigeki Kobayashi, Hiroki Nagai
-
Publication number: 20090131549Abstract: A process for preparing polyvinylpyrrolidones by free-radically initiated polymerization in the presence of an initiator found, which comprises performing the polymerization as a spray or droplet polymerization.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Applicant: BASF SEInventors: Dennis Losch, Ralf Widmaier, Volker Seidl, Hans-Ulrich Moritz, Karim Asif, Silke Biedasek
-
Patent number: 7517942Abstract: A method for preparing reversibly cross-linked isotactic polypropylene having a degree of crystallinity substantially identical to a degree of crystallinity of a starting polypropylene by mixing in the presence of heat, a polymer of isotactic polypropylene homopolymer; isotactic polypropylene copolymer; mixtures of isotactic polypropylene homopolymer and copolymer with an elastomer, an organic peroxide, and an accelerator, forming macro-radicals; the simultaneously coupling the macro-radicals with a sulfur obtaining an optimum cross-linking degree and a product made by the method.Type: GrantFiled: August 28, 2006Date of Patent: April 14, 2009Inventors: Said Bouhelal, Kenneth W. Lewis
-
Patent number: 7514511Abstract: Free radical polymerization process for preparing polymers with low polydispersity index and polymers obtained thereby. The process includes polymerizing at least one reactive monomer with at least one initiator and at least one ionic liquid (serving as solvent) to obtain polymers having a low polydispersity index of less than 1.5, wherein the reactive monomer is a nitrogen-containing monomer. In addition, the free radical polymerization processes have reaction time within 3 hours.Type: GrantFiled: September 1, 2005Date of Patent: April 7, 2009Assignee: Industrial Technology Research InstituteInventors: Balaganesan Banumathy, Wen-Yueh Ho, Tun-Fun Way, Lien Tai Chen
-
Publication number: 20090082535Abstract: To provide: a (meth)acrylic acid copolymer, which exhibits excellent chelating ability, dispersibility, and gel resistance, and can be preferably used in various applications, for example, in a dispersant such as an inorganic pigment and a metal ion, a detergent builder, and a water treatment agent such as a corrosion inhibitor and a scale inhibitor; and a method for producing the (meth)acrylic acid copolymer; and an application thereof.Type: ApplicationFiled: March 30, 2006Publication date: March 26, 2009Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Masato Nakano, Shigeru Yamaguchi, Koji Fukuhara
-
Publication number: 20090018266Abstract: The present invention relates to the preparation of hydrophilic nanoparticles and in particular hydrophilic nanoparticles that are biocompatible. Free radical monovinyl-divinyl monomer copolymerization/cross-linking reactions of water-soluble, monovinyl N-vinyl-2-pyrrolidone (NVP) with a bi-unsaturated divinyl, comonomer (poly{ethylene glycol}dimethacrylate) (PEGDMA), has been found to yield hydrophilic nanoparticles (NPs). These nanoparticles are built from three-dimensional nanopolymer networks. In the polymers' synthesis the composition of the monomers, and the total monomer concentration were varied. The characteristics of copolymers were determined by nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared (FTIR) and elemental analysis. Particle size and morphology of nanoparticles were confirmed by dynamic light scattering (DLS), transmission electron microscope (TEM) and scanning electron microscope (SEM) methods.Type: ApplicationFiled: November 13, 2006Publication date: January 15, 2009Inventors: Janos Borbely, John F. Hartmann
-
Publication number: 20080234447Abstract: The disclosure provides for a process and polymerization system to produce isoolefin polymers (72) utilizing polymorphogenates (16, 26) in the catalyst system to control polydispersity (MWD). The disclosure also provides a catalyst system (20) comprising a plurality of active catalyst complex species (34) formed by combination of a Lewis acid (24), an initiator (22) and a polymorphogenate (26), as well as polymers made using the catalyst system or process. The polymorphogenate (16, 26) can promote or mimic the formation of different active catalyst complex species (34) having different polymerization rates, i.e. different rates of propagation, chain transfer, or termination, as observed by different polydispersities resulting from the presence of relatively different proportions of the polymorphogenate.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Inventors: Timothy D. Shaffer, Michael F. McDonald, David Y. Chung, Robert N. Webb, Deborah J. Davis, Pamela J. Wright
-
Patent number: 7345121Abstract: The present invention relates to the technical sector of the polymerisation of acrylic acid and its salts, more particularly in solution, more particularly by controlled radical method, the use of the corresponding organo-sulphurated transfer agents, the acrylic acid polymers thus obtained, having a very low polydispersity PD (or very low polymolecularity index IP, which is an equivalent term), and their applications in industry.Type: GrantFiled: February 28, 2002Date of Patent: March 18, 2008Assignee: Coatex S.A.S.Inventors: Jean-Marc Suau, Jean-Bernard Egraz, Jerome Claverie, Catherine Ladaviere
-
Patent number: 7332553Abstract: The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a crosslinking monomer in the presence of a template molecule. The obtained polymers may be used for separation of enantiomers, diastereomers of the template molecule, and also for separation of the template molecule or template molecule analogues from structurally related compounds.Type: GrantFiled: November 15, 2006Date of Patent: February 19, 2008Assignee: MIP Technologies ABInventors: Börje Sellergren, Andrew Hall, Karine Chenon, Rohini Karmalkar
-
Publication number: 20080009595Abstract: The present invention provides a rubber composition for a sidewall excellent in appearance and weather resistance, and a tire having a sidewall prepared by using the rubber composition. The rubber composition for a sidewall of the present invention comprises 45 to 60 parts by weight of a carbon black, not more than 1.5 parts by weight of powder sulfur, not more than 0.75 part by weight of a sulfenamide vulcanization accelerator and 0.7 to 1.5 parts by weight of paraffin wax in which the distribution of the number of carbon atoms is 20 to 50, the ratio (iso content/normal content) of iso content to normal content is 5/95 to 20/80, the standard deviation/average number of carbon atoms of the iso content is 1.0 to 1.8 and the standard deviation/average number of carbon atoms of the normal content is 1.0 to 1.8, based on 100 parts by weight of a rubber component comprising a butadiene rubber in an amount of 35 to 55% by weight and a natural rubber.Type: ApplicationFiled: June 25, 2007Publication date: January 10, 2008Inventor: Takafumi Taguchi
-
Patent number: 7285611Abstract: This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (meth)acrylic acid type polymer is a water-soluble polymer of a low molecular weight which has only a small impurity content, entails no precipitation of an impurity during the preservation at a low temperature, and excels in dispersibility, chelating ability, and an anti-gelling property.Type: GrantFiled: September 11, 2006Date of Patent: October 23, 2007Assignee: Nippon Shokubai Co., Ltd.Inventors: Atsuro Yoneda, Takahiro Tsumori, Yoshikazu Fujii, Shigeru Yamaguchi
-
Patent number: 7208557Abstract: The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a crosslinking monomer in the presence of a template molecule. The obtained polymers may be used for separation of enantiomers, diastereomers of the template molecule, and also for separation of the template molecule or template molecule analogues from structurally related compounds.Type: GrantFiled: December 23, 2004Date of Patent: April 24, 2007Assignee: MIP Technologies ABInventors: Börje Sellergren, Andrew Hall, Karine Chenon, Rohini Karmalkar
-
Patent number: 7205366Abstract: The present invention is generally directed to a hole transport polymer comprising a polymeric backbone having linked thereto a plurality of substituents comprising fused aromatic ring groups, with the proviso that the polymer does not contain groups selected from triarylamines and carbazole groups. It further relates to devices that are made with the polymer.Type: GrantFiled: March 25, 2003Date of Patent: April 17, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Gary Delmar Jaycox, Mookkan Periyasamy, Gang Yu
-
Patent number: 7160971Abstract: The present invention provides novel multi-functional methacrylic copolymers that exhibit cationic pH-sensitive behavior as well as good water solubility under acidic conditions. The copolymers are constructed from tertiary amine methacrylates and poly(ethylene glycol) containing methacrylates. The copolymers are useful as gene vectors, pharmaceutical carriers, and in protein separation applications.Type: GrantFiled: November 22, 2005Date of Patent: January 9, 2007Assignee: Iowa State University Research FoundationInventors: Surya K. Mallapragada, Brian C. Anderson, Paul D. Bloom, Valerie V. Sheares Ashby
-
Patent number: 7132487Abstract: This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (meth) acrylic acid type polymer is a water-soluble polymer of a low molecular weight which has only a small impurity content, entails no precipitation of an impurity during the preservation at a low temperature, and excels in dispersibility, chelating ability, and an anti-gelling property.Type: GrantFiled: August 31, 2005Date of Patent: November 7, 2006Assignee: Nippon Shokubai Co., Ltd.Inventors: Atsuro Yoneda, Takahiro Tsumori, Yoshikazu Fujii, Shigeru Yamaguchi
-
Patent number: 7109280Abstract: The present invention relates to block copolymers for applications in medicine and biotechnology and synthesis thereof. Block copolymers comprise polyvalent N-Acetyl Glucosamine (NAG) which bind more efficiently to lysozyme than NAG itself. The effective inhibition is possible even at very low ligand concentrations than reported earlier. The block copolymers could be used for prevention and treatment of bacterial and viral infections. Moreover these polymers can be stimuli sensitive and be used for the recovery of biomolecules. The methodology of preparation of block copolymers reported here can be extended to other polymers and ligands such as sialic acid and used for preventing influenza and/or rotavirus infections. It also provides a method for preparation of block copolymers wherein polymers comprising sequences of specific ligands are essential.Type: GrantFiled: October 29, 2003Date of Patent: September 19, 2006Assignee: Council of Scientific and Industrial ResearchInventors: Mohan Gopalkrishna Kulkarni, Jayant Jagannath Khandare