Polymer Substrate Derived From Hydrocarbon Reactants Only Patents (Class 525/84)
  • Patent number: 10550913
    Abstract: A pulley contacting portion of a friction transmission belt is made of a rubber composition containing an EPDM mixture as a rubber component. The EPDM mixture as the rubber component includes a first EPDM with an ethylene content of 67% by mass or more and a second EPDM with an ethylene content of 57% by mass or less. A content of the second EPDM in the EPDM mixture is larger than a content of the first EPDM in the EPDM mixture. An average ethylene content of the EPDM mixture is 54% by mass or more and 59% by mass or less.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 4, 2020
    Assignee: Bando Chemical Industries, Ltd.
    Inventor: Yasuhiko Yoshida
  • Patent number: 10246577
    Abstract: A tire is provided with a tread comprising a rubber composition based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a polymethyl methacrylate thermoplastic resin, the polymethyl methacrylate thermoplastic resin exhibiting a Vicat point, measured according to Standard ISO 306: 2013 B50, within a range extending from 60° C. to 100° C.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 2, 2019
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Didier Vasseur, Frederic Lemerle
  • Patent number: 9034963
    Abstract: A transparent thermoplastic resin composition includes (A) a rubber-modified graft copolymer which is prepared by copolymerizing (a2) a (meth)acrylic acid alkyl ester monomer, (a3) a styrene-based monomer and (a4) an acrylonitrile-based monomer onto (a1) a butadiene-based rubber polymer; (B) a styrene-based copolymer having a glass transition temperature of about 90 to about 100° C. which is prepared by copolymerizing (b1) a methacrylic acid alkyl ester monomer, (b2) an acrylic acid alkyl ester monomer, (b3) a styrene-based monomer and (b4) an acrylonitrile-based monomer; and (C) a silicone oil. The composition can have improved whitening resistance at low temperatures and/or excellent impact strength.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 19, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jun Hwan Ahn, Il Jin Kim, Sun Hong Min
  • Patent number: 9000091
    Abstract: Disclosed is a method for preparing polyolefin-based adhesives. In the method, a maleated polyolefin is blended, in sequence, with a polyolefin elastomer and then with a linear low density polyethylene. The polyolefin-based adhesive made according to the method of the invention shows improved clarity and adhesion in multilayer polyolefin films.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: April 7, 2015
    Assignee: Equistar Chemicals, LP
    Inventors: Chun D. Lee, Maged G. Botros, Charles S. Holland
  • Publication number: 20140378576
    Abstract: The present invention relates to rubber polymer latex with a multi-layer core-shell structure, a method of preparing thereof, an acrylonitrile-butadiene-styrene graft copolymer comprising the same, and a thermoplastic resin composition using the same. The rubber polymer latex with a multi-layer core-shell structure has improved weather resistance while maintaining the properties of a diene-based rubber component. The impact resistance, the coloring properties and the weather resistance of the acrylonitrile-butadiene-styrene graft copolymer including the same may be improved. Thus, the impact strength, the coloring properties and the weather resistance of the thermoplastic resin including the acrylonitrile-butadiene-styrene graft copolymer may be improved, and the graft copolymer may be easily applied in industries using thereof.
    Type: Application
    Filed: April 30, 2014
    Publication date: December 25, 2014
    Applicant: LG Chem, Ltd.
    Inventors: Yu Sung JUNG, Joo Byung CHAI, Eun Seon PARK, Tae Young JEON, Keun Hoon YOO, Bong Keun AHN
  • Publication number: 20140187704
    Abstract: Disclosed are a transparent thermoplastic resin composition including (A) about 5 to about 40 wt % of an impact-reinforcing agent having a core-shell structure where an acrylic-based compound is grafted on a rubber core including a copolymer of an acrylic-based monomer and a diene-based monomer, to form a shell, and (B) about 60 to about 95 wt % of an acrylic-based resin, and a molded article using the same.
    Type: Application
    Filed: October 3, 2013
    Publication date: July 3, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Kee-Hae KWON, In-Chol KIM, Jung-Eun PARK, Jeong-Min LEE, Jin-Young HUH, Chang-Min HONG
  • Patent number: 8742016
    Abstract: Procedure for the manufacture of carboxylated ethylene polymer blends, in which in a 1st step, in a fluid mixing reactor, to 100 pbw of a particulate ethylene polymer—chosen from among ethylene homopolymers (HDPE, LDPE) and/or linear ethylene copolymers with 2 to ?20 wt.-% polymerized-in C3-12-olefin units (LLDPE, EOP), with a melt-flow rate MFR (190° C./2.16 kg)?20 g/10 min—are added 0.05-15 pbw of a ?,?-ethylenically unsaturated mono and/or dicarboxylic acid or its anhydride (carboxyl monomer), or a monomer mixture containing at least one carboxyl monomer and 0.01-10 pbw of a radical initiator or initiator mixture, and graft-polymerizing at reaction temperatures of 30-120° C., over a reaction time of 5-120 min and subsequently, in a 2nd step, reacting a mixture continuously fed into a reaction extruder of 100 pbw of the modified ethylene polymer obtained in the 1st solid phase step, 150-4,000 pbw of an ethylene polymer or polymer blend with a melt flow rate MFR (190° C., 2.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: June 3, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Klaus Besser, Jochen Gerecke, Lutz Haeussler, Bianka Leitner, Inno Rapthel
  • Patent number: 8742015
    Abstract: The objective of the present invention is to provide a thermoplastic resin composition having an excellent balance of chemical resistance, heat resistance and impact resistance and a molded article comprising this thermoplastic resin composition. The present thermoplastic resin composition comprises a rubber-reinforced resin, an ethylene•(meth)acrylic acid ester•carbon monoxide copolymer, and polytetrafluoroethylene, and contents of ethylene•(meth)acrylic acid ester•carbon monoxide copolymer and polytetrafluoroethylene are respectively from 0.5 to 20 parts by weight and from 0.01 to 5 parts by weight, with respect to 100 parts by weight of the rubber-reinforced resin. A modified polyolefin resin may be contained.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: June 3, 2014
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Keigo Higaki, Yasuhiko Itou
  • Patent number: 8742014
    Abstract: An object of the invention is to provide a liquid resin composition with low viscosity while containing polymer particles. Further, another object of the invention is to provide a liquid resin composition containing a large quantity of polymer particles without increasing the viscosity of the liquid resin composition. A liquid resin composition of the invention is comprising a liquid resin component and polymer particles each having an elastic core layer, an intermediate layer formed with a monomer having two or more double bonds and coated on the core layer, and a shell layer coated on the intermediate layer; wherein the polymer particles are dispersed at a ratio of their volume average particle diameter (Mv) to their number average particle diameter (Mn) of 3 or lower.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: June 3, 2014
    Assignee: Kaneka Corporation
    Inventor: Shinya Hongo
  • Publication number: 20140039104
    Abstract: Disclosed are an alkyl(meth)acrylate-based thermoplastic resin composition and a thermoplastic resin with modified scratch resistance and yellowness. The alkyl(meth)acrylate-based thermoplastic resin composition provides improved scratch resistance and low yellowness index while maintaining transparency, flowability, and impact strength, even when the total content of the vinyl cyan-based monomer contained in the resin composition is reduced to a level unattainable by conventional techniques, and the content of the alkyl(meth)acrylate-based monomer is increased.
    Type: Application
    Filed: July 27, 2012
    Publication date: February 6, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Hyun Seok Yang, Dae Woo Lee, Han Jong You, Chang Hun Han, Seong Lyong Kim
  • Patent number: 8501868
    Abstract: The present invention relates to thermoplastic molding compositions having a mixture of (a) from 10 to 50% by weight of a methyl methacrylate polymer as component (A), from 20 to 60% by weight of a copolymer as component (B), and from 20 to 70% by weight of a graft copolymer as component (C). Component (C) is obtainable from components (c1) a core, (c2) a first graft shell, and (c3) a second graft shell. The second graft shell (c3) is obtainable via polymerization of a C1-C8-alkyl ester of methacrylic acid as component (c31) and a further vinylaromatic monomer as component (c32). Graft copolymer (C) is produced via emulsion polymerization and is isolated from the reaction mixture by precipitation resulting from shear. Also disclosed are processes for producing the molding compositions, the use of the molding compositions, and moldings obtainable from the molding compositions.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: August 6, 2013
    Assignee: Styrolution GmbH
    Inventors: Matthias Müller, Ludger Leber, Achim Datko, Leonie Felicitas Braun, Christian Lemaire, Piyada Charoensirisomboon, Michel Pepers
  • Patent number: 8399561
    Abstract: The present invention relates to a process for preparing a high impact monovinylaromatic polymer comprising admixing a rubber, at least one monovinylaromatic monomer and optionally one or more comonomer in the presence of at least a borane complex of the L-BH3 type wherein L is a Lewis base and polymerizing the monovinylaromatic monomer. The borane complex initiator, L may be an ether (e.g THF, tetrahydrofurane), a thioether (e.g dimethylthioether) or an amine. A preferred complex is an amine borane such as by way of example triethylamine borane. The present invention also relates to a high impact monovinylaromatic polymer having a weight ratio of grafted monovinylaromatic monomer and optional comonomer to the initial monovinylaromatic monomer and optional comonomer above 0.1%, advantageously above 2% and preferably in the range 2 to 4%. The invention is of particular interest to make high impact polystyrene.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: March 19, 2013
    Assignees: Total Petrochemicals France, Centre National de la Recherche Scientifique
    Inventors: Michel Duc, Bruno Vuillemin, Denis Bertin, Sylvain Marque, Christophe Galindo
  • Patent number: 8378026
    Abstract: One aspect of the invention relates to a transparent rubber-modified styrenic resin composition. The resin composition comprises about 5 to about 30 parts by weight of a styrene-butadiene rubbery copolymer; and about 0 to about 15 parts by weight of a matrix resin comprising about 20 to about 40 parts by weight of styrenic monomer, about 30 to about 60 parts by weight of unsaturated carboxylic acid alkyl ester monomer and about 0 to about 15 parts by weight of vinyl cyanide monomer; wherein the difference between the refractive index of the rubbery copolymer and the matrix resin is about 0.005 or less and the transparent rubber-modified styrenic resin composition has a haze of about 5% or less as measured by a Nippon Denshoku Haze meter using a 3 mm thick test sample.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: February 19, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Byeong Do Lee, Young Sub Jin, Hwan Seok Park, Jae Keun Hong
  • Patent number: 8349964
    Abstract: The present invention provides a polymer/metal nano-composite. The nano-composite includes at least one copolymer chain having alkenyl monomer units and maleimide monomer units, and a nano-sized metal or inorganic crystal. It also provides a method of producing nano-sized metal/inorganic crystals in pure form. These nano-composites and nano-crystals can be useful as polymer fillers, tire rubber compounds, semiconductors, nano-magnets, catalysts, and quantum dots etc.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 8, 2013
    Assignee: Bridgestone Corporation
    Inventors: Xiaorong Wang, Victor J. Foltz, Pat Sadhukhan, Georg C. A. Böhm
  • Patent number: 8314182
    Abstract: A resin composition having good scratch resistance includes about 5 to about 50 parts by weight of core-shell graft resin (A) and about 95 to about 50 parts by weight of resin (B) which includes about 40 to about 100% by weight of (meth)acrylic acid alkyl ester. The outer shell of the core-shell graft resin (A) comprises (meth)acrylic acid alkyl ester.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: November 20, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Doo Han Ha, Bong Jae Jeong
  • Publication number: 20120157628
    Abstract: The present invention relates to, amongst other things, a process for manufacturing an impact modifier, concerns impact modified thermoplastic molding compositions and in particular a process for manufacturing and recovering the impact modifiers and their use in polymeric thermoplastic compositions. More particularly the present invention relates to a polymeric impact modifier with a core-shell structure manufactured by a multistage process comprising a special recovery process so that the composition of the thermoplastic polymer containing the impact modifier has a high fluidity while keeping its high impact strength.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Applicant: Arkema France
    Inventors: Christophe Navarro, Stephane Girois, Elisabeth Bay, Jean-Claude Saint-Martin, Magali Bergeret-Richaud
  • Patent number: 8148466
    Abstract: Thermoplastic polymer compositions, films, containers, laminates and fibers can comprise a modified polymer. The said modified polymer having a moiety comprising a half-ester reaction product of cyclodextrin and metal and/or organic group covalently bonded to some portion of the half-acid moieties. The cyclodextrin compound, grafted to the polymer structure, can scavenge impurities, permeants, or other undesirable volatile contaminants. The cooperation between the modified polymer's carboxylic acidic groups, basic groups and grafted cyclodextrin can provide active barrier properties to a film, web, fiber or other polymer structure. A permeant or a contaminant can be complexed or trapped within the polymer and held within the film, web or fiber preventing the permeant from passing into the interior of a container, or the contaminant can be scavenged from the enclosed headspace or surrounding environment.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: April 3, 2012
    Assignee: Cellresin Technologies, LLC
    Inventors: Willard E. Wood, Neil J. Beaverson
  • Patent number: 8129469
    Abstract: The present invention relates to a graft copolymer, a method for preparing the same and a thermoplastic resin composition comprising the same. The graft copolymer of the present invention comprises a composite rubber polymer (A-1) having an average particle diameter of 250-600 nm prepared by particle enlargement after mixing a diene rubber polymer (a-1) latex having an average particle diameter of 50-150 nm and a core-shell structured, cross-linked alkyl acrylate rubber polymer (b-1) latex having an average particle diameter of 50-250 nm. A thermoplastic resin composition prepared by mixing the graft copolymer of the present invention with a hard matrix (B) has very superior weathering resistance and superior pigmentation property, gloss, impact resistance and low-temperature impact strength.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: March 6, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-taek O, Tae-bin Ahn, Jung-tae Park, Min-jung Kim, Keun-hoon Yoo
  • Patent number: 8119736
    Abstract: Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: February 21, 2012
    Assignee: Bridgestone Corporation
    Inventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G. A. Böhm, Mark Arigo, Noriko Mori
  • Patent number: 8110629
    Abstract: A flame-retardant composition includes: a powdery acid-modified hydrogenated block copolymer (a) having a bulk density of 0.1 to 0.4 g/ml and which is a hydrogenated block copolymer modified by addition of an unsaturated carboxylic acid or a derivative thereof, the hydrogenated block copolymer comprises a polymer block A composed mainly of a vinyl aromatic compound unit and a polymer block B composed mainly of a conjugated diene unit, and has a weight average molecular weight of 50,000 to 500,000; a polyolefin resin (b); a non-aromatic rubber softener (c); and a metal hydrate (d). The flame-retardant composition contains the components (a), (b), (c) and (d) in proportions that satisfy the following relationships (1) to (3): 0.1?Wa/(Wa+Wb)?0.9??(1) 0.05?Wc/(Wa+Wb+Wc)?0.5??(2) 0.4?Wd/(Wa+Wb+Wc+Wd)?0.75??(3) wherein Wa, Wb, Wc and Wd represent masses of the acid-modified hydrogenated block copolymer (a), the polyolefin resin (b), the non-aromatic rubber softener (c) and the metal hydrate (d), respectively.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: February 7, 2012
    Assignee: Kuraray Co., Ltd.
    Inventors: Hajime Kitano, Koichi Wada, Hideo Takamatsu
  • Publication number: 20110262663
    Abstract: The present invention relates to a retardation film, a method for manufacturing the same, and a liquid crystal display device comprising the same. More particularly, the present invention relates to a retardation film which comprises 1) an acryl copolymer that comprises an acryl monomer and an aromatic vinyl monomer; and 2) a rubber component, and the retardation film according to the present invention has excellent optical transparency, haze, brittleness, mechanical strength, heat resistance and durability.
    Type: Application
    Filed: January 22, 2009
    Publication date: October 27, 2011
    Inventors: Jeong-Min Choi, Yoo-Seong Hong, Min-Hee Lee, Sang-Min Kwak, Jun-Geun Um, Kyung-Sik Kim
  • Publication number: 20110237749
    Abstract: The present invention relates to thermoplastic molding compositions comprising a mixture of (a) from 10 to 50% by weight, based on the entirety of components (A), (B), and (C), of a methyl methacrylate polymer as component (A), and (b) from 20 to 60% by weight, based on the entirety of components (A), (B), and (C), of a copolymer as component (B), obtainable via polymerization of a vinylaromatic monomer and of a vinyl cyanide, and (c) from 20 to 70% by weight, based on the entirety of components (A), (B), and (C), of a graft copolymer as component (C), obtainable from (c1) from 50 to 70% by weight, based on (C), of a core as component (C1), obtainable via polymerization of a 1,3-diene and of a vinylaromatic monomer and an agglomeration polymer, and (c2) from 15 to 25% by weight, based on (C), of a first graft shell as component (C2), obtainable via polymerization of a vinylaromatic monomer, of a C1-C8-alkyl ester of methacrylic acid, and/or of a C1-C8-alkyl ester of acrylic acid, and a crosslinking monomer,
    Type: Application
    Filed: March 25, 2011
    Publication date: September 29, 2011
    Applicant: BASF SE
    Inventors: Matthias Müller, Ludger Leber, Achim Datko, Leonie Felicitas Braun, Christian Lemaire, Piyada Charoensirisomboon, Michel Pepers
  • Patent number: 8008397
    Abstract: Provided are a rubber latex having a multi-layer structure, wherein an inner-layer rubber latex has a refractive index greater than that of an outer-layer rubber latex, a graft copolymer prepared from the rubber latex, a polyvinyl chloride (PVC) resin blend containing the graft copolymer, and a method of preparing the rubber latex. The PVC resin blend containing the graft copolymer including the rubber latex according to the present invention has improved color property and low-temperature impact strength than conventional PVC resins.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: August 30, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Yoon Ho Kim, Wonsuk Jang, Geon Soo Kim
  • Patent number: 7723433
    Abstract: A clear, impact modified, heat resistant polyvinyl chloride composition is provided comprising (a) at least one polyvinyl halide; (b) at least one clear impact modifier possessing a refractive index which is not more than about 2% above or below the refractive index of the polyvinyl halide; and (c) at least one clear heat modifier comprising a terpolymer obtained by the copolymerization of a vinyl aromatic monomer, an acrylonitrile and an alkyl acrylate or alkyl methacrylate, wherein the terpolymer possesses a refractive index which is not more than about 2% above or below the refractive index of the polyvinyl halide and possesses a weight average molecular weight ranging from about 75,000 to about 400,000.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: May 25, 2010
    Assignee: Chemtura Corporation
    Inventors: Larry B. Simmons, George P. McCarty
  • Patent number: 7723434
    Abstract: An olefinic thermoplastic elastomer with improved properties can be obtained by melting and kneading a graft copolymer, acrylic rubber, a crosslinking agent, and a co-crosslinking agent. The graft copolymer is composed of an olefin polymer segment formed from a nonpolar ?-olefin monomer and a vinyl polymer segment formed from a vinyl monomer, with particles of one segment being dispersed in the other segment. The particle diameter is 0.01 to 1 ?m. The acrylic rubber can be obtained by polymerizing a monomer mixture containing methoxyethyl acrylate.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: May 25, 2010
    Assignee: Nof Corporation
    Inventors: Motoyuki Sugiura, Toru Tamura, Takamitsu Kano, Toru Kato
  • Publication number: 20100093915
    Abstract: A method is disclosed for preparing an acrylic-styrene-acrylonitrile (ASA) resin, which comprises the steps of: (a) polymerizing a mixture comprising at least one acrylate monomer and at least one polyethylenically unsaturated monomer to form a rubber substrate, followed by (b) polymerizing a mixture of monomers in the presence of the rubber substrate, at least one of which monomers is selected from the group consisting of vinyl aromatic monomers and at least one of which monomers is selected from the group consisting of monoethylenically unsaturated nitrile monomers, and optionally followed by (c) polymerizing one or more monomers in at least one subsequent stage in the presence of the rubber substrate from (b), wherein the one or more monomers comprise at least one monomer selected from the group consisting of (C1-C12)alkyl- and aryl-(meth)acrylate monomers; wherein the amount of unreacted polyethylenically unsaturated monomer remaining in the rubber substrate before step (b) is less than 5.
    Type: Application
    Filed: May 20, 2009
    Publication date: April 15, 2010
    Inventors: Albin Peter Berzinis, Sandeep Dhawan, Viswanathan Kalyanaraman
  • Patent number: 7579406
    Abstract: The present invention relates to a transparent thermoplastic resin composition which characteristically contains A) 20-80 weight % of graft copolymer composed of a) conjugated diene rubber latex; b) intermediate layer prepared by copolymerization of acrylic acid alkylester derivative and aromatic vinyl derivative with the above a); and c) graft layer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, a romatic vinyl derivative and vinyl cyan derivative with the above b) and B) 20-80 weight % of MSAN copolymer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, aromatic vinyl derivative and vinyl cyan derivative.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: August 25, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-su Choi, Mi-young Lee, Hyong-min Bahn, Keun-hoon Yoo, Won-seok Lee
  • Patent number: 7538157
    Abstract: The present invention provides a series of baroplastic materials, and systems and methods of making and using such baroplastic materials. In one aspect of the invention, polymeric particles are provided that can be used to produce baroplastic materials under certain pressures and/or below certain temperatures. In one set of embodiments, the polymeric particles include an inner “core” region and an outer “shell” region. In some cases, more than one “shell” region may be present. In another arrangement the particles can include materials, or domains, in nanoscale proximity with each other. Non-particulate materials can also be processed in accordance with the invention. In another aspect of the invention, the invention provides for polymeric particles that can be processed and/or recycled multiple times, without causing significant degradation or alteration in the physical and/or chemical properties of the polymer.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: May 26, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Anne M. Mayes, Sang-Woog Ryu, Metin H. Acar, Juan A. Gonzalez
  • Publication number: 20090043047
    Abstract: A resin composition having good scratch resistance includes about 5 to about 50 parts by weight of core-shell graft resin (A) and about 95 to about 50 parts by weight of resin (B) which includes about 40 to about 100% by weight of (meth)acrylic acid alkyl ester. The outer shell of the core-shell graft resin (A) comprises (meth)acrylic acid alkyl ester.
    Type: Application
    Filed: October 17, 2008
    Publication date: February 12, 2009
    Applicant: Cheil Industries Inc.
    Inventors: Doo Han HA, Bong Jae JEONG
  • Patent number: 7452939
    Abstract: A polyesterified block copolymer represented by the general formula (1), (2) or (3) (for example, polyolefin/polyolefin block copolymer of the following general formula (1)), obtained by an esterification reaction between a terminal maleated polymer and a terminal hydroxylated polymer. Also, a process for producing the same is provided. (1) wherein each of R1 and R2 represents hydrogen or methyl; m is an integer of 10 to 200; n is an integer 10 to 200; k is an integer 5 of to 3000.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 18, 2008
    Assignees: San-Ei Kougyou Corporation, Takashi Sawaguchi
    Inventor: Takashi Sawaguchi
  • Patent number: 7396877
    Abstract: Disclosed is a resin composition comprising (A) 100 parts by weight of a base resin comprising a rubber-modified styrene-containing graft copolymer and a styrene-containing copolymer; (B) 0.5-8 parts by weight of an acrylic rubber graft copolymer resin having an average particle size of 0.1-0.5 ?m; and (C) 0.5-8 parts by weight of a graft copolymer resin comprising an ethylene ?-olefinic copolymer rubber having an average particle size of 0.1-0.8 ?m. The thermoplastic resin composition of the present invention greatly improves chemical resistance to insulating materials, such as urethane foam, or foaming agent compounds, such as freon (CFC-11, HCFC-141b, HFC-245fa, HFC-245eb, HFC-245ca, HFC-356mffm) and cyclopentane and offers superior impact strength, whiteness and processability. It can be useful for extrusion sheets of refrigerator interiors.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: July 8, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Sung-je Cha, Sung-tae Ahn, Dong-chul Kim, Yun-kyoung Cho
  • Patent number: 7390575
    Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA).
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 24, 2008
    Assignee: Japan Polypropylene Corporation
    Inventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama
  • Patent number: 7368061
    Abstract: A continuous process for the production of an elastomer-modified thermoplastic is disclosed. The process entails (i) obtaining graft elastomer (D) having residual moisture content of 1 to 50 wt. %, particularly 5 to 50 wt. %, particularly preferably 10 to 40 wt. %, (ii) introducing (D) and thermoplastic resin (B) through an inlet to a reactor operating under conditions calculated to melt (D) and (B) and to remove organic volatile components C) to produce a molten blend, the reactor being equipped with a plurality of kneading bars, that convey a portion of the molten blend towards the reactor inlet.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 6, 2008
    Assignee: Lanxess Deutschland GmbH
    Inventors: Alfred Eitel, Haakan Jonsson, Ulrich Liesenfelder, Stefan Moss, Ricarda Nothelle, Andreas Frankenau, Stephen Böhmer
  • Patent number: 7342087
    Abstract: A method for prevention of increase in particles in copolymer for semiconductor resist, which comprises passing, through a filter containing a resin having an amino group and/or an amide bond a copolymer solution for semiconductor resist which contains a copolymer for semiconductor resist having a polar group-containing recurring unit and an alicyclic structure-containing recurring unit and which contains no ionic additive. With the method, there can be obtained a copolymer semiconductor resist, which can be suitably used in a resist film used for formation of a fine pattern in semiconductor production and which is very low in formation of particle s during storage and accordingly generates substantially no defect after development.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: March 11, 2008
    Assignee: Maruzen Petrochemical Co. Ltd.
    Inventors: Takanori Yamagishi, Kazuhiko Mizuno
  • Patent number: 7217763
    Abstract: The present invention relates to acrylonitrile-butadiene-styrene copolymer transparent resin having superior chemical resistance and transparency and preparation thereof, and particularly to acrylonitrile-butadiene-styrene copolymer transparent resin having superior chemical resistance and transparency by graft-copolymerzing on a) conjugated diene rubber latex, b) methacrylate alkylester or acrylate alkylester compound, c) aromatic vinyl compound and d) vinyl cyanide compound, and preparation thereof. In addition, according to the present invention, chemical resistance and ESCR can be further improved by further adding e) polyester-amide copolymer to the acrylonitrile-butadiene-styrene copolymer transparent resin.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 15, 2007
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-Su Choi, Sung-Hee Kim, Hyoung-Min Bahn, Keun-Hoon Yoo
  • Patent number: 7129293
    Abstract: A crosslinked polymer or polymer fine particles which can be obtained through copolymerization of at least a macromonomer having a polyethylene glycol segment, a comonomer having tertiary amine groups in its side chains and a crosslinking agent are provided. Said crosslinked polymer can be provided in the form of polymer nano- or micro-spheres; and also as conjugate nano- or micro-spheres with their core parts fixing or encapsulating metal or semiconductor ultrafine particles.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: October 31, 2006
    Assignees: Japan Science and Technology Agency, NOF Corporation
    Inventors: Kazunori Kataoka, Yukio Nagasaki, Hidenori Otsuka, Atsuhiko Ogura, Takehiko Ishii, Hisato Hayashi, Teppei Uno
  • Patent number: 7119145
    Abstract: Pre-formed polymer particles are chemically modified by free radical-initiated surface graft modification. The resulting resin is specifically adapted to provide enhanced chromatographic performance throughout chromatographic separations.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: October 10, 2006
    Assignee: Phenomenex, Inc.
    Inventors: Arthur R. Dixon, Emmet E. Welch, Shahana Huq
  • Patent number: 7022763
    Abstract: A branched olefin copolymer demonstrating excellent performance in various uses, comprising a building block (A) represented by formula (1) below and a building block (B) represented by formula (2) below, obtained by e.g.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 4, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tomoaki Matsugi, Nobuo Kawahara, Hideyuki Kaneko, Shingo Matsuo, Shin-ichi Kojoh, Norio Kashiwa
  • Patent number: 7019049
    Abstract: The present invention relates to an impact resistant resin composition having superior balance of physical properties of chromacity, impact resistance and strength, and a process for preparing an impact resistant resin composition that can largely reduce draining treatment. The process of the present invention comprises the steps of preparing a resin without rubber ingredient by a mass polymerization, and adding and mixing a conjugated copolymer having rubber ingredient, when the resin is molten in the latter part of monomer-removal process, to prepare an impact resistant resin composition, wherein the conjugated copolymer is previously dehydrated and dried by filtering a copolymerization liquid.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: March 28, 2006
    Assignee: LG Chemical Co. Ltd.
    Inventors: Keun Hoon Yoo, Jeong Su Choi, Sung Hee Kim, Chan Hong Lee
  • Patent number: 6849690
    Abstract: The present invention relates to a method of preparing rubber-modified styrene copolymer resin with excellent transparency and impact resistance, specifically to a method of preparing transparent resin of rubber-modified styrene copolymer comprising graft-copolymerizing styrene monomer and (meth)acrylate monomer in the presence of block or random styrene-butadiene copolymer which has 30-50% of styrene skeleton content and 20-40 cp of 5% toluene solution viscosity at 25 iÉ. According to the method of the present invention, the transparent resin containing the rubber particles of a double structure comprising onion and core-shell structure can provide transparent resin of rubber-modified styrene copolymer resin with excellent transparency and impact resistance as well as good gloss.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: February 1, 2005
    Assignee: LG Chem, Ltd.
    Inventors: Chang-Hun Han, Oh-Jin Kwon, Dae-Woo Lee
  • Patent number: 6812283
    Abstract: A process for the agglomeration of at least one rubber (A), dispersed in an aqueous phase, by the addition of a dispersion of at least one agglomerating polymer (B) in aqueous phase, in which the agglomerating polymer B used is one containing substantially no free acid groups and the agglomeration is carried out in the presence of at least one basic electrolyte.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: November 2, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Wil Duijzings, Sabine Oepen, Norbert Niessner, Michael Breulmann, Hardy Korb
  • Patent number: 6777083
    Abstract: This invention provides a process for manufacturing a methyl methacrylate polymer comprising the steps of feeding a monomer containing at least 80 wt % of methyl methacrylate and a radical polymerization initiator represented formula (III) to a reactor; polymerizing the material at a polymerization temperature of 110 to 160° C. under the conditions satisfying particular equations between an initiator concentration and a polymerization temperature; feeding a reaction mixture taken out from the reactor to a devolatilization step (feeding step); and separating and removing volatiles from the reaction mixture (devolatilization step). A methyl methacrylate polymer having adequately good optical properties and a plastic optical fiber having improved transmission performance can be prepared according to this invention.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: August 17, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka, Takeshi Kitayama, Tatsuyuki Takayanagi, Jun-ichiro Atarashi, Yasukazu Yoshida, Masaharu Yanai, Motomu Oh-Kita
  • Patent number: 6767965
    Abstract: The present invention provides a method of preparing a monomer-grafted syndiotactic polystyrene with polarity, which comprises (a) forming swollen syndiotactic polystyrene by mixing with a syndiotactic polystyrene in powder state and a radical initiator in a solvent at the temperature of 40-80° C. using a batch reactor, and (b) grafting a monomer selected from the group consisting of maleic anhydride, maleic imide and derivatives thereof onto the swollen syndiotactic polystyrene.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: July 27, 2004
    Assignee: Samsung Atofina Co. Ltd.
    Inventors: Xuequan Zhang, Jae Gon Lim, Jung Hyun Baik, Hyun Joon Kim
  • Patent number: 6737476
    Abstract: A brominated butyl rubber and a polymer based on a conjugated diolefin monomer are grafted by mixing the solid polymer at a temperature greater than 50° C. for a time sufficient to cause grafting. The grafted copolymer is useful especially in tire tread compositions.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: May 18, 2004
    Assignee: Bayer Inc.
    Inventor: William Hopkins
  • Patent number: 6716917
    Abstract: A rubber-reinforced styrene transparent resin composition contains a styrene copolymer reinforced with a rubber polymer, wherein the monomer composition of an acetone soluble resin component contained in the resin composition contains 5 to 70% by weight of aromatic vinyl monomer (a1), 30 to 95% by weight of unsaturated carboxylic acid alkyl ester monomer (a2), 0 to 50% by weight of vinyl cyanide monomer (a3), and 0 to 50% by weight of another monomer copolymerizable with these monomers, and the acid value of the acetone soluble resin component is 0.01 to 1 mgKOH/g.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: April 6, 2004
    Assignee: Toray Industries, Inc.
    Inventors: Ryota Kido, Hiroshi Shibata, Hajime Takamura, Akihiro Ohmura, Yoshiyuki Yamamoto
  • Patent number: 6716916
    Abstract: A molding composition containing a graft polymer is disclosed. The graft is a product of a free-radical emulsion polymerization of resin-forming vinyl monomers in the presence of rubber present in latex form having a glass transition temperature of ≦0° C. using an initiator combination comprising a persulfate compound and a redox initiator system. The process for preparing the graft polymer entails adding the persulfate compound at the beginning of the graft polymerization reaction and a later addition of the redox initiator. The composition that features good gloss and flowability is suitable for the preparation of molded articles.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: April 6, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Liqing-Lee Sun, Herbert Eichenauer, Heinrich Alberts
  • Publication number: 20040006179
    Abstract: A cured elastomeric rubber composition with a reduced coefficient of friction and a relatively high surface energy is disclosed. The composition comprises an elastomeric rubber with polar functional groups grafted to the polymer backbone. The polar functional groups can include amide, amine urethane, ester or silane functional groups. The elastomeric rubber may be any relatively non-polar elastomeric rubber such as EPDM or polyisoprene. Also incorporated into the rubber composition are various rubber additives including for example, carbon black, processing oils, curatives, and clay filler. The incorporation of various functional groups in the rubber compositions effectively reduces the coefficient of friction of the resulting cured rubber component.
    Type: Application
    Filed: July 1, 2002
    Publication date: January 8, 2004
    Applicant: Cooper Technology Services LLC
    Inventor: Hans-Joachim Graf
  • Patent number: 6663953
    Abstract: A Fresnel lens base sheet is provided which is suitable for the formation of a lens layer of an ultraviolet-cured resin and has excellent impact resistance and environmental resistance. The Fresnel lens base sheet comprises a specific rubber-modified styrene resin comprising a rubber-like elastic material as dispersed particles and a copolymer of a styrene monomer with an acrylic (methacrylic) ester monomer as a continuous phase.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: December 16, 2003
    Assignees: Asahi Kasei Kabushiki Kaisha, Dai Nippon Printing Co., Ltd.
    Inventors: Shunji Kamiya, Makoto Honda, Keiji Hanamoto
  • Patent number: 6660806
    Abstract: A rubber-modified styrenic resin composition comprising (A) 100 wt. parts of a rubber-modified styrenic resin which contains 10 to 35 wt. % of soft component particles having an average particle size of 0.1 to 0.5 &mgr;m, where said soft component particles have a single occlusion structure comprising a core part which consists of a single continuous phase of a styrenic resin and a shell part which comprises a rubber polymer and occludes said core part, and (B) 0.1 to 10 wt. parts of a polymer having a solubility parameter (SP) of 8.45 to 8.70 and having no aromatic vinyl compound unit therein. This composition has excellent plane impact strength and gloss properties, as well as moldability and other physical properties, and satisfies properties required for exterior materials, wrapping materials and molded foam articles.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: December 9, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shuji Yoshimi, Hayato Kihara, Takahiro Ishii
  • Patent number: 6653404
    Abstract: A rubber composition having satisfactory processability and dimension stability, exhibits excellent tensile strength and wearing resistance when vulcanized and comprises (1) a crosslinked rubber particle containing as repeating units (a) 39.89 to 79.89% by weight of a conjugated diene unit such as 1,3-butadiene or the like, (b) 20 to 60% by weight of an aromatic vinyl unit such as styrene, (c) 0.01 to 10% by weight of a monomer unit having at least two polymerizable unsaturated group such as divinylbenzene, and the like, and (d) 0.1 to 30% by weight of a monomer unit having one polymerizable unsaturated group and an amino group such as vinylbenzylmethylamine, and the like and (2) a conjugated diene/aromatic vinyl copolymeric rubber such as styrene-butadiene copolymeric rubber and the like.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: November 25, 2003
    Assignee: JSR Corporation
    Inventors: Tomohisa Konno, Toshihiro Tadaki, Yoshiyuki Udagawa, Hiroshi Akema