Alcoholized; Transesterified; Hydrolyzed; Or Metal Containing Chemical Treating Agent; E.g., Saponified, Etc. Patents (Class 525/330.6)
  • Patent number: 10125203
    Abstract: The present invention is characterized by being a polyvinyl alcohol powder having an average particle diameter of 100 to 2000 ?m as measured by optical microscopic observation at a humidity of 65% RH and a temperature of 25° C., having a bulk specific gravity (g/ml) of a portion ranging from 500 to 1000 ?m in particle diameter of more than 0.60 and less than 0.80, and having a content of the portion ranging from 500 to 1000 ?m in particle diameter of 35 to 70% by mass. Accordingly, a polyvinyl alcohol powder is provided, that is good in anti-scattering property, superior in solubility in preparing an aqueous solution from the powder, and capable of reducing transport costs due to its large specific gravity.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 13, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Junpei Horiguchi, Kazuyuki Tanaka, Junji Funakoshi
  • Patent number: 9951161
    Abstract: Provided is a vinyl alcohol-based copolymer, obtained by saponifying a copolymer of vinyl acetate and a polyfunctional monomer, wherein the polyfunctional monomer contains two or more ethylenic double bonds in its molecule, the vinyl alcohol-based copolymer has a side chain containing an ethylenic double bond and a molar ratio (d) of the ethylenic double bond to a total of vinyl alcohol units and vinyl acetate units is from 0.05/100 to 2/100, and the vinyl alcohol-based copolymer is water soluble.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: April 24, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Yosuke Kumaki, Tatsuya Tanida
  • Patent number: 9505923
    Abstract: A transparent ABS resin composition of the present invention comprises: an acrylonitrile-butadiene-styrene graft (g-ABS) copolymer which is copolymerized by mixture of acrylate based monomer, styrene based monomer, and acrylonitrile based monomer (a2) on butadiene based rubber polymer (a1); and (B) a styrene-acrylonitrile based copolymer, satisfies a relation denoted by Equation 1 and Equation 2 below, and has excellent impact resistance, scratch resistance, and transparency: 0?|X?Y|?0.005??(Equation 1) 0?|X?Z|?0.005??(Equation 2) In the Equations, X is refractive index of the acrylonitrile-butadiene-styrene graft (g-ABS) copolymer, Y is refractive index of the butadiene based rubber polymer (a1), and Z is refractive index of the styrene-acrylonitrile based copolymer (B).
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: November 29, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun Hwan Ahn, Il Jin Kim, Jae Wang Lee
  • Patent number: 9029480
    Abstract: The present invention relates to a preparation method of a superabsorbent polymer, and specifically to a method of preparing a superabsorbent polymer including the steps of: preparing a hydrous gel phase polymer by thermal polymerizing or photo-polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the hydrous gel phase polymer; milling the dried polymer; classifying the milled hydrous gel phase polymer into two or more grades by particle size; adding a surface cross-linking agent to each hydrous gel phase polymer classified into two or more grades; and carrying out a surface cross-linking reaction of the hydrous gel phase polymer to which the surface cross-linking agent is added.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 12, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Young Won, Chang-Sun Han, Gi-Cheul Kim, Sang-Gi Lee, Kyu-Pal Kim, Sung-Soo Park, Gyu Leem
  • Publication number: 20140249278
    Abstract: An ionomer has an ABA-type triblock structure, wherein an A-block is an ionic polymer block including a structural unit having a general formula (i) expressed as follows: —(CH2—CR1(COOM1/y)- where R1 is one of a methyl group and hydrogen, M is one of metal, NH4, organic ammonium and imidazolium, and y is a valence of an M ion, and a B-block is a nonionic polymer block selected from a group consisting of an olefin (co) polymer block, a vinyl (co) polymer block, a diene (co) polymer block, a polyester resin block and a polycarbonate resin block.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 4, 2014
    Inventors: Takashi SAWAGUCHI, Daisuke SASAKI
  • Patent number: 8697812
    Abstract: The present invention relates to a method of preparing a superabsorbent polymer, including the steps of: preparing a hydrous gel phase polymer by thermal polymerizing or photo-polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the hydrous gel phase polymer; milling the dried polymer; adding a surface cross-linking agent to the milled polymer; and elevating the temperature of the polymer including the surface cross-linking agent at a speed of 3° C./min to 15° C./min, and carrying out a surface cross-linking reaction at 100° C. to 250° C.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 15, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Young Won, Chang-Sun Han, Gi-Cheul Kim, Sang-Gi Lee, Kyu-Pal Kim, Sung-Soo Park, Gyu Leem
  • Publication number: 20140100338
    Abstract: The invention relates to a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. According to said method, at least one polyacrylic acid ester is provided and incubated with at least one enzyme selected from enzymes (EC 3.1) acting on ester bindings, until the ester groups contained in the polyacrylic acid ester are partially or fully hydrolytically split, and optionally the modified polymer obtained thereby is isolated. The invention also relates to the enzymes used and mutants thereof, nucleic acids coding for the enzymes, vectors comprising the nucleic acids, micro-organisms comprising the vectors, and the use of the enzymes, the vectors or the micro-organisms for carrying out a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. The present application also relates to polymer reaction products that can be obtained by the method, and methods for producing esterases.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 10, 2014
    Applicant: BASF SE
    Inventors: Bernhard Hauer, Hans Wolfgang Höffken, Cecilia Kvarnström Branneby, Helmut Schwab, Sabine Feichtenhofer, Marlene Buchebner, Brigitte Pohn
  • Patent number: 8658741
    Abstract: The instant invention pertains to the preparation of polymers or copolymers wherein in a first step a controlled free radical polymerization process is carried out and in a second step the resulting polymer is modified by transesterification reactions. The final modified polymer or copolymer is useful as a dispersant for pigments. Further aspects of the invention are the thus prepared polymers or copolymers, a pigment concentrate containing the polymer or copolymer and a coating material containing the pigment concentrate.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 25, 2014
    Assignee: BASF SE
    Inventors: Ralf Knischka, Ernst Eckstein, Clemens Auschra, Akira Matsumoto
  • Publication number: 20130295383
    Abstract: An adhesive composition and a polarizing plate, the adhesive composition including an isocyanate curing agent and having a creeping distance decrease rate of 10% or less, wherein the creeping distance decrease rate is calculated by Equation 1: Creeping distance decrease rate (%)=|(A?B)/A|×100, ??[Equation 1] wherein, in Equation 1, A and B are creeping distances of an adhesive layer prepared from the composition, when a force of 2.25 kg is applied to a polarizing plate at 25° C. for 1,000 seconds after the polarizing plate formed with the adhesive layer is attached to a glass plate and left at 35° C. and 45% RH for 24 hours and for 36 hours, respectively.
    Type: Application
    Filed: June 29, 2013
    Publication date: November 7, 2013
    Inventors: Won KIM, Eun Hwan JEONG, Yi Eun KIM
  • Patent number: 8575274
    Abstract: The present invention relates to bone cements and, more particularly, to multi-solution bone cements and methods for making the same. An embodiment of the present invention provides multi-solution bone cements which include cross-linked PMMA beads, thereby providing for a significant increase in the polymer-to-monomer (P:M) ratio. Another embodiment of the present invention provides cross-linked PMMA beads which are surface modified with unsaturated carbon double bonds. A further embodiment of the present invention provides multi-solution bone cements made with PMMA-PMMA spherical brush polymers.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: November 5, 2013
    Assignee: Syracuse University
    Inventors: Julie M. Hasenwinkel, Imad K. Merkhan, Jeremy L. Gilbert
  • Patent number: 8545949
    Abstract: A resin composition used to form a dye-receiving layer of a thermal transfer-receiving sheet in which the dye-receiving layer is formed on at least one surface of a substrate contains a core/shell-type latex including a core containing (A) and a shell containing (B) and a cross-linking agent that reacts with a carboxyl group contained in the shell. (A) is an acrylic resin at least containing, as one of its monomers, a substituted or unsubstituted phenoxyalkyl (meth)acrylate and/or a substituted or unsubstituted phenoxy polyalkylene glycol (meth)acrylate. (B) is a urethane resin containing a carboxyl group.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 1, 2013
    Assignee: Sony Corporation
    Inventor: Hideki Sekiguchi
  • Patent number: 8497326
    Abstract: Disclosed are ionomer compositions neutralized by a combination of cesium and potassium that have antistatic properties. Also disclosed are articles, including laminates and monolayer or multilayer structures comprising such compositions to which neither powders nor dusts easily adhere electrostatically.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: July 30, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Kazuyuki Nakata, David J. Walsh
  • Patent number: 8394504
    Abstract: Disclosed is an optical planar thermoplastic resin composition including a lactone ring-containing polymer as a main component thereof, or including a lactone ring-containing polymer and at least one other thermoplastic resin. The optical planar thermoplastic resin composition of the present invention has high transparency, high heat resistance, and high optical isotropy, and therefore, can sufficiently exhibit characteristics according to various optical applications.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 12, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Shoji Ito, Ken-ichi Ueda, Nobuhisa Noda, Shigeru Oka, Shigeo Otome, Hiroko Izumi
  • Publication number: 20130059964
    Abstract: The instant invention pertains to the preparation of polymers or copolymers wherein in a first step a controlled free radical polymerization process is carried out and in a second step the resulting polymer is modified by transesterification reactions. The final modified polymer or copolymer is useful as a dispersant for pigments. Further aspects of the invention are the thus prepared polymers or copolymers, a pigment concentrate containing the polymer or copolymer and a coating material containing the pigment concentrate.
    Type: Application
    Filed: October 25, 2012
    Publication date: March 7, 2013
    Applicant: BASF SE
    Inventor: BASF SE
  • Patent number: 8383734
    Abstract: The present invention relates to bone cements and, more particularly, to acrylic-based orthopedic bone cements, their use in spinal applications, and methods for making the same. An embodiment of the present invention provides a method of grafting PMMA brushes on cross-linked PMMA nanospheres comprising at least one of the following steps: performing a hydrolysis reaction of surface methyl ester groups of said cross-linked PMMA nanospheres to form surface carboxylic acid groups of said cross-linked PMMA nanospheres; forming a 2-aminoethyl acrylate compound; coupling said surface carboxylic acid groups of said cross-linked PMMA nanospheres with said 2-aminoethyl acrylate compound to form a coupled compound with an initiating site; and grafting said PMMA brushes onto said initiating site.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: February 26, 2013
    Assignee: Syracuse University
    Inventors: Julie M. Hasenwinkel, Jeremy L. Gilbert, Danieli C. Rodrigues, Rebecca Bader
  • Patent number: 8349967
    Abstract: The present invention provides a sealing film for a solar cell having the improved heat resistance and light resistance and a solar cell made by using the same. A sealing film for a solar cell including ethylene/vinyl acetate copolymer and an organic peroxide, which includes a specific peroxycarbonate as the organic peroxide, and which includes a dihydroxydimethoxybenzophenone ultraviolet absorber without substantially including a hindered amine light stabilizer to prevent yellowing. A sealing film for a solar cell including ethylene/vinyl acetate copolymer and an organic peroxide, which includes a specific dialkylperoxide as the organic peroxide, and which includes dihydroxydimethoxybenzophenone ultraviolet absorber without substantially including monohydroxyalkoxybenzophenone ultraviolet absorber to prevent yellowing.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: January 8, 2013
    Assignee: Bridgestone Corporation
    Inventor: Hisataka Kataoka
  • Publication number: 20130005915
    Abstract: The present invention provides a pressure-sensitive adhesive composition excellent in the anti-foaming release property and high-temperature stress relaxation property, and a pressure-sensitive adhesive layer composed of the pressure-sensitive adhesive composition. The invention relates to a pressure-sensitive adhesive composition including an acrylic polymer which is formed from a monomer component including methyl methacrylate and has a glass transition temperature (Tg) of ?40° C. or more, wherein the pressure-sensitive adhesive composition has a shear storage elastic modulus at 85° C. as measured by a dynamic viscoelasticity measurement of from 1×104 to 3×105 Pa.
    Type: Application
    Filed: April 26, 2012
    Publication date: January 3, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi SUZUKI, Hiroaki KISHIOKA, Masatomo NATSUI
  • Patent number: 8329818
    Abstract: Provided is a modified ethylene-vinyl alcohol copolymer (C) having an ethylen content of 5 to 55 mol %, which contains a specific structural unit (I) in an amount of 0.3 to 40 mol % and may be obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) having a molecular weight of not more than 500. This can be produced by a method for producing the modified ethylene-vinyl alcohol copolymer (C) which comprises melting and kneading an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) in an extruder. The modified ethylene-vinyl alcohol copolymer (C) is superior to a unmodified ethylene-vinyl alcohol copolymer (A) in transparency, stretchability, flexibility and flexing resistance due to the specific structural unit (I) incorporated therein, and thus, can be used as a barrier material in various applications requiring the above performance capabilities.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: December 11, 2012
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Shinji Tai, Kouta Isoyama, Tomoyuki Watanabe
  • Publication number: 20120232222
    Abstract: The invention provides a process for preparing 1-alkoxy-2-methyl-1-oxopropan-2-yl(meth)acrylate, e.g. 1-methoxy-2-methyl-1-oxopropan-2-yl(meth)acrylate, by transesterifying alkyl ?-hydroxyisobutyrates. Copolymerization of such monomers in the preparation of poly(meth)acrylate-based moulding materials improves the heat distortion resistance thereof.
    Type: Application
    Filed: September 7, 2010
    Publication date: September 13, 2012
    Applicant: Evonik Roehm GmbH
    Inventors: Thorben Schütz, Joachim Knebel, Guenther Graeff, Ruediger Carloff, Roger Recktenwald, Volker Herzog
  • Patent number: 8247499
    Abstract: A water-absorbing polymer structure is disclosed, whose surface has been brought into contact with a combination of a metal salt and an oxide of a metal. The invention also relates to a process for treating the surface of water-absorbing polymer structures whereby the surface of water-absorbing polymer structures is brought into contact with a combination of a metal salt and an oxide of a metal at a temperature of from about 50 to about 300° C. The present invention further relates to the water-absorbing polymer structures obtainable by this process, a composite comprising a water-absorbing polymer structure and a substrate, chemical products such as foams and fibers comprising water-absorbing polymer structures or a composite, and the use of a combination of an oxide of a metal and of a metal salt for treatment of the surface of super-absorbing polymer structures.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: August 21, 2012
    Assignee: Evonik Stockhausen GmbH
    Inventors: Mirko Walden, Franck Furno, Harald Schmidt
  • Patent number: 8188193
    Abstract: A process for thermally surface postcrosslinking water-absorbing polymer particles in a fluidized bed generated by means of a carrier gas, wherein the surface postcrosslinker is supplied to the fluidized bed in gaseous form.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: May 29, 2012
    Assignee: BASF SE
    Inventors: Stefan Blei, Marco Krüger, Wilfried Heide, Matthias Weismantel, Uwe Stueven
  • Publication number: 20110293895
    Abstract: The present invention relates to a moisture barrier for the protection of internal environment of sensitive devices comprising a homogeneous dispersion of superficially functionalized containing surface modifying organic group belonging to the same chemical class of at least one functional group of the polymeric compound, to a process for the production of said barrier and to sensitive device comprising such barriers.
    Type: Application
    Filed: December 4, 2009
    Publication date: December 1, 2011
    Applicant: SAES GETTERS S.P.A.
    Inventors: Antonio Bonucci, Roberto Macchi, Roberto Giannantonio
  • Patent number: 8063151
    Abstract: The copolymers include a hydrophobic monomer and an acryloyl or methacryloyl ester of a propylene glycol monomethyl ether, also referred to as 1-methyl-2-methoxyethyl acrylate (“MMOEA”). The combination of the hydrophobic monomer and the MMOEA monomer advantageously provides desired mechanical strength, biocompatibility, and drug permeability in the copolymers. The copolymers can advantageously be used on medical devices.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: November 22, 2011
    Assignee: Abbott Laboratories
    Inventor: Stephen Pacetti
  • Publication number: 20110224375
    Abstract: The instant invention pertains to the preparation of polymers or copolymers wherein in a first step a controlled free radical polymerization process is carried out and in a second step the resulting polymer is modified by transesterification reactions. The final modified polymer or copolymer is useful as a dispersant for pigments. Further aspects of the invention are the thus prepared polymers or copolymers, a pigment concentrate containing the polymer or copolymer and a coating material containing the pigment concentrate.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 15, 2011
    Inventors: Ralf KNISCHKA, Ernst Eckstein, Clemens Auschra, Akira Matsumoto
  • Publication number: 20110178228
    Abstract: The present invention relates to resin syrup, which comprises a high-molecular-weight acrylic material containing a carboxyl group, and comprises a room-temperature-curing initiator and a high-temperature-curing initiator, and it also relates to an artificial marble containing a hardened form of the resin syrup, and to a production method for the same. The present invention can provide resin syrup having outstanding curing efficiency and a viscosity suitable for press molding by a process such as maturation because of the inclusion of the high-molecular-weight acrylic material containing a carboxyl group, the room-temperature-curing initiator, and the high-temperature-curing initiator, and it can provide an artificial marble containing a hardened form of the resin syrup, and a production method for the same.
    Type: Application
    Filed: September 4, 2009
    Publication date: July 21, 2011
    Inventor: Hang Young Kim
  • Patent number: 7928166
    Abstract: There is disclosed a polyvinyl alcohol having a 1,2-glycol bond in a side chain, and a process for preparing the polyvinyl alcolnol wherein there is no generation of dimethyl carbonate hence no need of a process of eliminating dimethyl carbonate in the recovering process of waste liquid after hydrolysis. Also, even when an introduction amount of 1,2-glycol bonds is increased, there is no deterioration of solubility in a hydrolyzing solution (methanol) of a copolymer (paste) before hydrolysis. Further, water-insolubility is not lowered even in experiencing thermal history. Specifically, there is provided a polyvinyl alcohol having a 1,2-glycol bond in a side chain obtained by hydrolyzing a copolymer of a vinyl ester monomer and a compound shown in the formula (1) wherein the hydrolysis degree of the polyvinyl alcohol is at least 60% by mol.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 19, 2011
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Mitsuo Shibutani
  • Publication number: 20100285244
    Abstract: The present invention relates to an acrylic pressure sensitive adhesive composition. More specifically, the present invention relates to an acrylic pressure sensitive adhesive composition which comprises a) acrylic copolymers; and b) a compound having an ester value of 200 or more. The acrylic pressure sensitive adhesive composition of the present invention has an excellent wettability to the surface of an adhered article with surface unevenness, an excellent endurance reliability, transparency, and stain resistance of adhered article, and a high-rate release property without any considerable change of adhesive properties.
    Type: Application
    Filed: October 17, 2007
    Publication date: November 11, 2010
    Inventor: Dong Han Kho
  • Patent number: 7776962
    Abstract: Low shear-thinning polyvinyl acetals having a solution viscosity in 30% strength by weight solution in methyl ethyl ketone which changes by not more than 10% in a shear rate range from 1 to 100 s?1. The preparation of the low shear-thinning polyvinyl acetals involves acetalation of partly hydrolyzed or completely hydrolyzed vinyl ester polymers comprising ?50 mol % of vinyl alcohol units with one or more aldehydes, optionally in the form of the hydrates, hemiacetals or full acetals, wherein from 0 to 60% by weight of the aldehyde, based on the total amount of the aldehyde, is initially introduced over the course of the first one to ten minutes of the acetalation and is prereacted over the course of from 1 to 30 minutes, and the remaining proportion is then metered in continuously over the course of at least 20 minutes.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: August 17, 2010
    Assignee: Kuraray Europe GmbH
    Inventor: Kurt Stark
  • Patent number: 7683135
    Abstract: The present invention provides an ethylene-vinyl alcohol based copolymer (EVOH) having fundamentally improved thermal stability. The EVOH is characterized in that the proportion of ethylene units (III) is from 20 to 60 mole % with respect to the total (III+IV+V) of ethylene units (III), vinyl alcohol units (IV), and vinyl ester units (V), and the proportion of the total (I+II) of carboxylic acids units (I) and lactone ring units (II) in copolymer terminals with respect to the total (III+IV+V) is 0.12 mole % or less. The EVOH can be obtained by, for example, contacting a reducing agent with an ethylene-vinyl ester based copolymer before saponification and/or EVOH after saponification.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: March 23, 2010
    Assignee: Kuraray Co., Ltd.
    Inventors: Naohiko Uchiumi, Takashi Wakui
  • Patent number: 7566751
    Abstract: Polyvinyl acetals with low solution viscosities and maximum Newtonian flow behavior contain sulphonate-functional vinyl ether or sulphonate-functional allyl ether units in addition to conventional vinyl ester, vinyl alcohol, and vinyl acetal units.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: July 28, 2009
    Assignee: Kuraray Europe GmbH
    Inventor: Andreas Lumpp
  • Patent number: 7544740
    Abstract: A multi-layer nano-particle composition including a polymer core and at least two additional layers is provided. The nano-particles have a mean average diameter less than about 100 nm. The nano-particles can be modified via, for example, hydrogenation or functionalization. The nano-particles can be advantageously incorporated into rubbers, elastomers, and thermoplastics.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: June 9, 2009
    Assignee: Bridgestone Corporation
    Inventors: Xiaorong Wang, Victor J. Foltz
  • Patent number: 7402632
    Abstract: Method for increasing the molecular weight of polyacrylates, in which polyacrylates, functionalized at least in part of their chain ends by functional groups X, are reacted with a compound having at least functional groups Y capable of linking reactions with functional groups X.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: July 22, 2008
    Assignee: tesa Aktiengesellschaft
    Inventors: Marc Husemann, Stephan Zöllner
  • Patent number: 7399801
    Abstract: Provided is a curable composition which can easily regulate the properties of a cured object prepared therefrom, which can prepare a cured object that does not substantially discolor or soften a finishing agent or coating material applied to the surface thereof, and which has a high curing rate in the inner regions. The curable composition contains (A) a polymer having at least one mercapto group at the molecular ends, the polymer being derived from a thiocarbonylthio group-containing polymer (a2) prepared by polymerizing a monomer (a1) which contains an acrylic ester as a principal component and which contains 50% by weight or more of the acrylic ester and less than 50% by weight of a monomer copolymerizable with the acrylic ester in the presence of a thiocarbonylthio group-containing compound; (B) a compound having at least two mercapto groups per molecule; and (C) an oxidizing agent.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: July 15, 2008
    Assignee: Kaneka Corporation
    Inventors: Ryotaro Tsuji, Tomoki Hiiro
  • Patent number: 7390843
    Abstract: An antifouling coating which comprises a varnish comprised of a metal-containing acrylic resin having, in a side chain thereof, at least one group represented by the following formula (1): wherein X represents a group of the formula: n represents 0 or 1; Y represents a hydrocarbon group; M represents a metal; m represents an integer equal to [(the valence number of metal M)?1]; A represents an organic acid residue derived from a monobasic acid, said varnish having a nonvolatile fraction of not less than 40 weight % and a viscosity at 25° C. of not more than 18 poises and said antifouling coating having a volatile organic compound (VOC) content of not more than 400 g/L.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: June 24, 2008
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Kiyoaki Higo, Masayuki Matsuda, Satoshi Okamoto, Naoki Yamamori
  • Patent number: 7365126
    Abstract: A shaped medical device article prepared from a polymer melt composition comprising a polymer ester, a transesterification catalyst, and a tri- or tetraalkoxy silane, by forming and solidifying said composition, and after solidification, subjecting the composition to reaction conditions to effect hydrolysis at least some alkoxysilyl groups remaining in the composition to form silanol groups and to effect condensation of said silanol groups to form a ceramic network. The polymer ester may be a vinyl ester homopolymer or copolymer, or a polymer having ester groups in the backbone thereof.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 29, 2008
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Liliana Atanasoska, Michele Zoromski, Robert Warner
  • Patent number: 7358304
    Abstract: The invention relates to high-molecular, crosslinked polyvinyl butyrals, obtainable by (self-) crosslinking polyvinyl butyrals that contain coacetalated, acid-functionalized aldehydes. The invention also relates to a method for producing the same and to the use thereof.
    Type: Grant
    Filed: August 31, 2002
    Date of Patent: April 15, 2008
    Assignee: Kuraray Europe GmbH
    Inventors: Bernd Papenfuhs, Martin Steuer, Simon Jonas
  • Patent number: 7342076
    Abstract: The present invention is concerned with a vinyl polymer having at least one group of the general formula (1) permolecule at the molecular chain terminus. —Z—R—CR1?CR2R3??(1) wherein Z represents an oxygen atom, a sulfur atom, a group of the formula NR?, R? represents a univalent hydrocarbon group containing 1 to 20 carbon atoms, or a bivalent organic group containing 1 to 20 carbon atoms, and R represents a carbonyl group, a direct bond or a bivalent organic group containing 1 to 20 carbon atoms; R1 and R2 are the same or different and each represents a hydrogen atom or a univalent organic group containing 1 to 20 carbon atoms, and R3 represents an organic group containing 1 to 20 carbon atoms. The present invention is further concerned with a curable composition comprising the above vinyl polymer.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: March 11, 2008
    Assignee: Kaneka Corporation
    Inventors: Yoshiki Nakagawa, Kenichi Kitano
  • Patent number: 7332459
    Abstract: A method of inhibiting scale formation in a subterranean formation comprising: (a) injecting a suspension comprising particles of a controlled release scale inhibitor suspended in an aqueous medium into a formation through an injection well wherein the particles have a mean diameter of less than 10 microns, preferably less than 5 microns, more preferably less than 1 micron; (b) allowing the suspension to percolate through the subterranean formation towards a production well; and (c) controllably releasing the scale inhibitor from the particles in the near well bore region of the production well. Suitably, the particles of the controlled release scale inhibitor comprise an esterifiable scale inhibitor cross-linked with a polyol via ester cross-links.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: February 19, 2008
    Assignee: BP Exploration Operating Company Limited
    Inventors: Ian Ralph Collins, Simon Neil Duncum
  • Patent number: 7179865
    Abstract: This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said vinyl polymer being brought into contact with an oxidizing agent or a reducing agent.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: February 20, 2007
    Assignee: Kaneka Corporation
    Inventors: Nao Fujita, Kenichi Kitano, Yoshiki Nakagawa
  • Patent number: 7098272
    Abstract: The present invention provides a method for producing hydroxyl group-containing polymer particles including causing cross-linked polymer particles containing a (meth)acrylate polymer to react in the presence of a metal-containing ester-exchange reaction catalyst with at least one compound selected from the group consisting of a compound including at least two hydroxyl groups and a compound including at least one primary amino group and at least one hydroxyl group, the cross-linked polymer particles comprising the (meth)acrylate polymer represented by the following formula (I): wherein R1 represents a hydrogen atom or a methyl group; R2 to R4 may be the same or different from each other, and each independently represents a substituted or non-substituted alkyl group or a substituted or non-substituted aryl group, any one of which has 1 to 12 carbon atoms; and n represents an integer of 1 or more.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: August 29, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Takako Kobayashi, Chisato Urano
  • Patent number: 7097890
    Abstract: A family of polymers containing selected cyclic allylic pendent groups for oxygen scavenging packaging which has minimal organoleptic by-products after oxidation.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: August 29, 2006
    Assignee: Chevron Phillips Chemical Co. LP
    Inventors: Ta Yen Ching, Joseph L. Goodrich, James P. Leonard, Kenneth W. Russell
  • Patent number: 7045560
    Abstract: An antifouling coating which comprises a varnish comprised of a metal-containing acrylic resin having, in a side chain thereof, at least one group represented by the following formula (1): wherein X represents a group of the formula: n represents 0 or 1; Y represents a hydrocarbon group; M represents a metal; m represents an integer equal to [(the valence number of metal M)-1]; A represents an organic acid residue derived from a monobasic acid, said varnish having a nonvolatile fraction of not less than 40 weight % and a viscosity at 25° C. of not more than 18 poises and said antifouling coating having a volatile organic compound (VOC) content of not more than 400 g/L.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: May 16, 2006
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Naoki Yamamori, Satoshi Okamoto, Kiyoaki Higo, Masayuki Matsuda
  • Patent number: 7041731
    Abstract: This invention provides a method for producing a saponified ethylene-vinyl acetate copolymer in which visible imperfections (particularly fish eyes) of the saponified copolymer is inhibited. In this invention, a mixture solution is prepared by adding water to a methanol solution after saponifying an ethylene-vinyl acetate copolymer, and insoluble materials are removed from this mixture solution. Various types of filter or centrifugal separator are used to remove insoluble materials. It is preferable that the weight ratio of methanol to water is from 5:5 to 9:1, the concentration of the saponified copolymer is from 30 to 60 wt %, and the temperature is from 55 to 80° C. This method is particularly suitable for producing a saponified ethylene-vinyl acetate copolymer having an ethylene content of 20 to 70 mol % and a saponification degree of at least 95 mol %.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: May 9, 2006
    Assignee: Kuraray Co., Ltd.
    Inventors: Takaharu Kawahara, Toshio Tuboi
  • Patent number: 7030194
    Abstract: To eliminate a halogen group of a halogen group-terminated vinyl polymer, the present invention provides a method to treat said polymer with an oxy anion compound to thereby eliminate a terminal halogen group easily. Thus, it is possible to improve the storage stability of the polymer or a curable composition comprising said polymer and to prevent various materials coming into contact with the reaction apparatus or the polymer from being corroded. In particular, it is possible to improve the storage stability of a crosslinkable silyl group-containing polymer.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: April 18, 2006
    Assignee: Kaneka Corporation
    Inventors: Yoshiki Nakagawa, Kenichi Kitano, Nao Fujita
  • Patent number: 6933349
    Abstract: A binder composition, obtained by polymerizing acrylic acid monomer in water in the presence of a cure accelerator comprising an alkali metal salt of a phosphorous-containing inorganic acid to form a low molecular weight polyacrylic acid and subsequently reacting said low molecular weight polyacrylic acid with a polyhydroxy crosslinking agent in a crosslinking step to make a composition suitable for use as a component in a binder for fiberglass. A significant improvement involves conducting the crosslinking step in the absence of added catalyst. Moreover, satisfactory results are obtained in the absence of conventional undesirable sulfur odors.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: August 23, 2005
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Liang Chen, William Downey
  • Patent number: 6933350
    Abstract: A vinyl polymer having at least one group of the general formula (1) per molecule at the molecular chain terminus. —Z—R—CR1?CR2R3??(1) wherein Z represents an oxygen atom, a sulfur atom, a group of the formula NR?, R? represents a univalent hydrocarbon group containing 1 to 20 carbon atoms, or a bivalent organic group containing 1 to 20 carbon atoms, and R represents a carbonyl group, a direct bond or a bivalent organic group containing 1 to 20 carbon atoms; R1 and R2 are the same or different and each represents a hydrogen atom or a univalent organic group containing 1 to 20 carbon atoms, and R3 represents an organic group containing 1 to 20 carbon atoms; and a curable composition comprising the above vinyl polymer are provided.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: August 23, 2005
    Assignee: Kaneka Corporation
    Inventors: Yoshiki Nakagawa, Kenichi Kitano
  • Patent number: 6916545
    Abstract: A resin composition to be used as a material for a various part of an automotive vehicle. The resin composition comprises a copolymer (A) formed by copolymerization of a first unsaturated monomer (a) and a second mononer (b). The first unsaturated monomer has a functional group which is bondable by hydrogen bond to a hydroxyl group. The second monomer is copolymerizable with the first unsaturated monomer. A metal oxide (B) is dispersed in the copolymer and having hydroxyl groups and hydrophobic groups at surface of the metal oxide.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: July 12, 2005
    Assignees: Nissan Motor Co., Ltd., Nihon University School Jurdical Person, Tama-TLO Corporation
    Inventors: Shoichiro Yano, Takashi Sawaguchi, Masatoshi Chikazawa, Takashi Takei, Tomohiro Ito, Masao Nakajima, Takashi Seino, Yasuaki Kai, Shinkichi Torii, Kouichi Handa, Katsuhiko Suzuki, Kenji Uesugi
  • Patent number: 6906146
    Abstract: Disclosed is a process for esterifying and/or transesterifying a polymer having a polyethylenic backbone and pendant acid and/or ester moieties comprising contacting a melt of the polymer with a transesterifying compound so that the polymer undergoes esterification and/or transesterification but not alcoholysis. The esterified or transesterified polymer also has pendant ester moieties which differ in kind and/or number from the unreacted polymer. In one embodiment, the process also comprises adding an amount of a transition metal salt that is effective to promote oxygen scavenging. Also in a further embodiment, the process comprises irradiating the transesterified polymer with actinic radiation to reduce the induction period before oxygen scavenging commences. Also disclosed are compositions comprising a component which comprises an ethylenic or polyethylenic backbone and a pendant or terminal moiety comprising a benzylic, allylic, or ether-containing radical.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 14, 2005
    Assignee: Phillips Petroleum Company
    Inventors: Ta Yen Ching, Kiyoshi Katsumoto
  • Patent number: 6870009
    Abstract: Low molecular weight polyvinyl acetals have a solution viscosity of from 2 to 12 mPas and a degree of polymerization Pw less than 200, and are obtained by hydrolyzing a vinyl ester polymer having a solution viscosity of from 1.0 to 1.6 mPas until the content of vinyl alcohol units is ?50 mol %, to produce a polyvinyl alcohol whose solution viscosity is from 1.0 to 2.0 mPas, and then acetalizing the resultant polyvinyl alcohol. The products may be used as binders and films of increased adhesion to substrates.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: March 22, 2005
    Assignee: Wacker Polmer Systems GmbH & Co. KG
    Inventors: Kurt Stark, Bernhard Glaser, Werner Bauer, Peter Tschirner
  • Patent number: 6841258
    Abstract: High-density, miniaturized arrays including high surface areas. Arrays described include substrate with a coating of linking agents, as well as arrays with reactants affixed to the substrates. Methods of manufacturing high-density arrays of reactants. The methods include the use of oriented, heat shrink films and elastomeric materials. Methods of functionalizing a substrate with linking agents for subsequent affixation of reactants are also disclosed herein.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: January 11, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Kurt J. Halverson, Sanjay L. Patil, Jerald K. Rasmussen