Mercaptan Patents (Class 526/224)
  • Patent number: 10449124
    Abstract: A polymerizable composition for dental use including a (meth)acrylate monomer that is able to cyclopolymerize is provided.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 22, 2019
    Assignee: GC Corporation
    Inventors: Takayuki Murata, Nobuhito Takagi, Takayuki Ueno
  • Patent number: 10030081
    Abstract: A (meth)acrylic resin composition is obtained by a method comprising: continuously feeding a raw material solution essentially comprising methyl methacrylate, a chain transfer agent and a radical polymerization initiator, and optionally comprising an acrylic acid alkyl ester in a mass ratio of the acrylic acid alkyl ester to the methyl methacrylate of 0/100 to 20/80 into a tank reactor to allow bulk polymerization to proceed in the tank reactor at a polymerization conversion ratio of 40 to 70% by mass to obtain a reaction product while continuously discharging the reaction product from the tank reactor; heating the discharged reaction product with a heat exchanger; removing volatile matter from the heated reaction product; filtrating a liquid additive through a filter; and adding the filtrated liquid additive to the reaction product from which the volatile matter has been removed.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: July 24, 2018
    Assignee: KURARAY Co., Ltd.
    Inventors: Yasuhito Kitade, Hiroshi Ozawa, Shouji Tanaka
  • Patent number: 10017587
    Abstract: A method for producing a (meth)acrylic resin composition, the method comprising continuously feeding a polymerizable monomer component comprising 50 to 100% by mass of methyl methacrylate, 0 to 20% by mass of an acrylic acid alkyl ester and 0 to 30% by mass of an additional monomer, a chain transfer agent, and a radical polymerization initiator to a tank reactor; conducting bulk polymerization of the polymerizable monomer component at a polymerization conversion ratio of 40 to 70% by mass to obtain a liquid containing a (meth)acrylic resin; continuously feeding the liquid to a vented extruder to separate a volatile component from the (meth)acrylic resin; continuously feeding the separated volatile component to a distillation column to obtain a fraction containing methyl methacrylate; adding a polymerization inhibitor to the fraction; and reusing the fraction which contains the polymerization inhibitor as part of the polymerizable monomer component.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: July 10, 2018
    Assignee: KURARAY Co., Ltd.
    Inventors: Hiroshi Ozawa, Yasuhito Kitade, Shouji Tanaka
  • Patent number: 9803042
    Abstract: Additives comprising a low surface energy group and one or more hydroxyl groups are described.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: October 31, 2017
    Assignee: 3M Innovative Properties Co.
    Inventors: Thomas P. Klun, Mahfuza B. Ali, Richard J. Pokorny, Daniel R. Cremons, Michelle L. Toy
  • Patent number: 9624327
    Abstract: A method for producing a (meth)acrylic resin composition, the method comprises the steps of continuously feeding methyl methacrylate and the other materials into a tank reactor while controlling each of the amounts thereof, performing bulk polymerization in the tank reactor to obtain a reaction product, recovering a mixture (A) containing methyl methacrylate and the others from the reaction product, and continuously feeding the mixture (A) into the tank reactor, wherein each of the amounts of methyl methacrylate and the others being fed into the tank reactor are controlled on the basis of the amount of the mixture (A) being fed into the tank reactor and the proportions of methyl methacrylate and the others in the mixture (A), and the perfect-mixing time of the tank reactor, the half life of a radical polymerization initiator at a temperature equal to the temperature inside the tank reactor, the agitation power of the tank reactor, the mean residence time of a reaction starting material in the tank reactor, an
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: April 18, 2017
    Assignee: KURARAY Co., Ltd.
    Inventors: Hiroshi Ozawa, Yasuhito Kitade, Shouji Tanaka
  • Patent number: 9273231
    Abstract: Heat activable adhesive tape for bonding electronic components and conductor tracks, with an adhesive composition having at least an acid-modified or acid anhydride-modified vinylaromatic block copolymer, and epoxide compound and a metal chelate.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: March 1, 2016
    Assignee: tesa SE
    Inventor: Thorsten Krawinkel
  • Patent number: 9052441
    Abstract: Disclosed is a dual layer prism sheet including two patterned prism sheets adhered to each other with an adhesive layer interposed therebetween. The adhesive layer includes a polymeric adhesive and a lubricant. A liquid crystal display including the dual layer prism sheet is also disclosed. Each pattern on the prism sheet is arranged to make a predetermined angle with a liquid crystal panel.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: June 9, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Hwan Hong, Jeong-Uk Heo, Ho-Yun Byun, Boo-Kan Ki, Min-Oh Choi
  • Patent number: 9034992
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 19, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Rolf Josten, Michael Klimpel
  • Publication number: 20150105515
    Abstract: An improved polymerization process using a specific molecular weight regulator makes it possible to produce new nitrile rubbers featuring particularly low emission values and giving vulcanizates which have an advantageous profile of properties and which are of outstanding quality, in particular in odour-sensitive applications.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 16, 2015
    Inventors: Sven BRANDAU, Andreas KAISER, Hans MAGG, Uwe WESTEPPE
  • Patent number: 8981019
    Abstract: There is provided a method capable of producing a methacrylic-based polymer excellent in pyrolysis resistance and excellent in fabricability in a high productivity. The method for producing a methacrylic-based polymer includes the following steps (1) and (2): step (1) of using a complete mixing reactor (A) to thereby obtain the first syrup, including specific steps; step (2) of using a reaction apparatus (D) including a plug flow mixer (B) and a plug flow reactor (C) to thereby obtain the second syrup, including specific steps.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hisaaki Yoshimura, Masahiro Hayashida, Daisuke Nonaka, Yusuke Morita, Mitsuhiro Matsuo
  • Patent number: 8912299
    Abstract: This invention relates to a method for preparing a star-shaped polycarboxylate superplasticizer by the first esterification step with polyol and (meth)acrylic acid as main reactants and the second polymerization step. In the first step, the star-shaped polymerizable active ends were synthesized by esterification between polyol and (meth)acrylic acid in the presence of catalyst. In the second step, the final star-shaped polycarboxylate superplasticizer was prepared by radical polymerization among the product obtained in first step, unsaturated polyoxyethylene ethers, molecular weight regulator and unsaturated carboxylic acid in the presence of initiator. The production process of this invention exhibits some characteristics including simple, easily controllable, high polymerization degree, low cost and pollution free. The star-shaped molecular structure of polycarboxylate superplasticizer can be achieved through synthesizing active “core” by esterification and “arm” by radical polymerization.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: December 16, 2014
    Assignee: Beijing University of Technology
    Inventors: Xiao Liu, Ziming Wang, Suping Cui, Mingzhang Lan, Qianjin Mao, Hongxia Guo, Yali Wang, Jinbo Yang, Xiaoyu Ma, Jie Zhu
  • Patent number: 8859704
    Abstract: Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (Mw/Mn) from about 2 to about 30, a melt index (I2) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: October 14, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Christopher R. Eddy, Mehmet Demirors, Wallace W. Yau, Sarat Munjal, Stefan Hinrichs, Jian Wang, Otto J. Berbee, Werner Zschoch, Cornelis J. Hosman, Lonnie G. Hazlitt
  • Publication number: 20140302335
    Abstract: A paper coating slip additive obtainable by free-radical polymerization, its preparation and its use in paper coating compositions are described. The additive is formed from (a) acid monomers selected from ethylenically unsaturated C3 to C8 carboxylic acids, (b) associative monomers of the general formula H2C?CR1—COO-(EO)n—(PO)m—R2 where R1 is hydrogen or methyl, n is at least two, m is from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and R 2 is a C8-C30 alkyl group or a C8-C30 alkaryl group, and (c) nonionic copolymerizable monomers other than a) and b), wherein said additive has a weight average molecular weight of below 200 000 and wherein tert-dodecyl mercaptan is used as chain transfer agent.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 9, 2014
    Applicant: BASF SE
    Inventors: Hermann Seyffer, Carmen-Elena Cimpeanu, Anja Song, Thomas Steinmacher, Joerg Claussen, Philipp Zacharias, Vijay Raman, Petra Schoecker
  • Publication number: 20140235807
    Abstract: Disclosed herein is a chain transfer agent in a free-radical emulsion polymerization process, of at least one mercapto-methyl ester, and also relates to the free-radical emulsion (co)polymerization process comprising at least one such mercapto-methyl ester and uses thereof. Also disclosed herein are mercapto-methyl diesters.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 21, 2014
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Benoit Cazaux, Pascal Saint-Louis-Augustin, Georges Fremy
  • Publication number: 20140179888
    Abstract: The present invention relates to a method of removing and preventing water and condensate blocks in wells by contacting a subterranean formation with a composition comprising a low molecular weight fluorinated copolymer having perfluoro alkyl moieties which are no longer than C6. A fluorinated copolymer of low molecular weight of about 50,000 g/mol and a method of preparing the same are also disclosed.
    Type: Application
    Filed: February 26, 2014
    Publication date: June 26, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Cheryl Lynn Iaconelli, Gerald Oronde Brown, Christopher James Martin, Erick J. Acosta
  • Patent number: 8748548
    Abstract: To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: June 10, 2014
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura
  • Patent number: 8664340
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: March 4, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Publication number: 20140037837
    Abstract: A process for preparing vinyl polymer beads said process comprising aqueous suspension polymerisation of olefinically unsaturated monomers using a free-radical initiator, wherein at least 20 wt % of the olefinically unsaturated monomers used is derived from at least one bio-renewable olefinically unsaturated monomer.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 6, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Gerardus Cornelis Overbeek, Tijs Nabuurs, Adrianus Antonius johannes Van Geel
  • Patent number: 8623981
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: January 7, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Rolf Josten, Michael Klimpel
  • Patent number: 8569394
    Abstract: An active light-curable ink composition contains a polymerizable compound, a color material having an absorption peak in a wavelength region, and a polymerization initiator having an absorption peak in a different wavelength region from the color material.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: October 29, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Satoru Miura
  • Patent number: 8568875
    Abstract: Copolymers which are composed of at least 4 monomers, including (meth)acrylate compounds containing perfluoroalkyl groups, are suitable for the treatment of fiber materials. The copolymers are usually used here in the form of aqueous dispersions. The fiber materials are in particular fabrics, for example made of polyolefin. Treatment with the copolymers imparts to them oil- and water-repellent properties and also repellent properties toward low molecular weight alcohols.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 29, 2013
    Assignee: Huntsman Textile Effects (Germany) GmbH
    Inventors: Rolf Moors, Wilhelm Artner, Isabella Rettenbacher, Edeltraud Schidek
  • Patent number: 8563659
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 22, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Publication number: 20130267669
    Abstract: Provided herein are methods for the preparation of telechelic polyolefins via polymerization reaction with a terpene initiator.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Inventors: Casey D. Stokes, Young Chang
  • Patent number: 8497332
    Abstract: The present invention provides: resins which can be used for various applications such as radical curable resin compositions, colorant-dispersed compositions, and photosensitive resin compositions; resin compositions; and means for producing the resins. Specifically, the present invention provides an ?-allyloxymethylacrylic copolymer having in its main chain a structural unit represented by formula (1): wherein R is a hydrogen atom or a C1-C30 organic group.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: July 30, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventor: Tomomasa Kaneko
  • Publication number: 20130190468
    Abstract: The invention relates to a process for preparing a (meth)acrylate copolymer containing tertiary amino groups by free-radical polymerization in solution from a monomer mixture selected from a) 30 to 70% by weight of a C1-C4-alkyl ester of acrylic acid or methacrylic acid and b) 70 to 30% by weight of an alkyl ester of acrylic acid or methacrylic acid with a tertiary amino group in the alkyl radical and c) 0 to 10% of further copolymerizable vinyl monomers, whereby one or more polymerization initiators, optionally one or more molecular weight regulators and one or more solvents or of a solvent mixture are added to the monomer mixture to give a polymerization mixture, which is polymerized at temperatures from 30 to 120° C.
    Type: Application
    Filed: October 13, 2010
    Publication date: July 25, 2013
    Applicant: EVONIK RÖHM GmbH
    Inventors: Christian Meier, Andreas Weber, Johannes Vorholz, Alpertunga Kueksal, Andreas Klosendorf, Pamela Boehmann, Marcus Denger, Norbert Hoffmann, Nikolaos Papadopoulos
  • Patent number: 8470034
    Abstract: The material of the invention is obtained by radical polymerization from a mixture of acrylic and/or methacrylic monomers. The mixture further contains at least one transfer agent, preferably from the thiol family, that substantially enhances the flexibility of the polymer material thus obtained, and reduces the tackiness thereof. The polymer material thus obtained is intended for making ophthalmologic implants, and more particularly, intraocular lenses.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: June 25, 2013
    Assignee: Acrylian
    Inventor: Jean Terrisse
  • Patent number: 8415442
    Abstract: Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (Mw/Mn) from about 2 to about 30, a melt index (I2) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: April 9, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Christopher R. Eddy, Mehmet Demirors, Wallace W. Yau, Sarat Munjal, Stefan Hinrichs, Jian Wang, Otto J. Berbee, Werner Zschoch, Cornelis J. Hosman, Lonnie G. Hazlitt
  • Patent number: 8367778
    Abstract: Process for the elimination of residual mercaptans from nitrile rubbers, comprising: a. adding a colloidal emulsion of sulfur to a nitrile latex emulsion (NBR rubber latex) containing free mercaptan and with a pH of between 7 and 14, at a temperature ranging from 30 to 120° C.; b. coagulating the nitrile latex c. washing with demineralized water and drying the NBR rubber recovered after coagulation.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 5, 2013
    Assignee: Polimeri Europa S.p.A.
    Inventors: Gian Tommaso Viola, Davide De Santi, Romano Lima
  • Patent number: 8349976
    Abstract: Copolymers which are composed of at least 4 monomers, including (meth)acrylate compounds containing perfluoroalkyl groups, are suitable for the treatment of fiber materials. The copolymers are usually used here in the form of aqueous dispersions. The fiber materials are in particular fabrics, for example made of polyolefin. Treatment with the copolymers imparts to them oil- and water-repellent properties and also repellent properties toward low molecular weight alcohols.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: January 8, 2013
    Assignee: Huntsman Textile Effects (Germany) GmbH
    Inventors: Rolf Moors, Wilhelm Artner, Isabella Rettenbacher, Edeltraud Schidek
  • Patent number: 8314192
    Abstract: The present invention relates to a process for producing an interpenetrating polymer network structure, which comprises the steps of impregnating a polymer molding with a radical polymerizable composition containing an ethylenically unsaturated compound and a radical polymerization initiator; and polymerizing the ethylenically unsaturated compound in a swollen state of the polymer molding impregnated with the radical polymerizable composition; wherein a chain transfer agent and/or a radical polymerization inhibitor are added to the radical polymerizable composition and/or the polymer molding before impregnating the polymer molding with the radical polymerizable composition. According to the present invention, a highly uniform interpenetrating polymer network structure can be obtained.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: November 20, 2012
    Assignee: Toray Industries, Inc.
    Inventors: Norikazu Tabata, Kazuhiko Hashisaka, Masahiro Sugimura, Takuo Sakamoto, Masaki Ue, Hiroyuki Nakayama, Seiji Fukuda
  • Patent number: 8241829
    Abstract: To provide a resist polymer comprising, as a structural unit, an acid-decomposable unit having a structure represented by formula (1) or (2) which exhibits a small line edge roughness and produces little defects in DUV excimer laser lithography or the like.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: August 14, 2012
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hikaru Momose, Atsushi Ootake, Tadashi Nakamura, Akifumi Ueda
  • Publication number: 20120142875
    Abstract: Disclosed are a maleimide-a-alkylstyrene-based, heat-resistant bulk tetrapolymer and a preparation process thereof. More specifically, disclosed are a bulk tetrapolymer, comprising 5-60 wt % of an N-substituted maleimide monomer, 10-70 wt % of an a-alkylstyrene monomer, 5-50 wt % of an unsaturated nitrile monomer and 3-50 wt % of an aromatic vinyl monomer, as well as a continuous bulk polymerization process for preparing the same. The disclosed bulk tetrapolymer has a weight-average molecular weight (Mw) of 70,000-300,000 and a glass transition temperature of 150-200 DEG C., shows excellent high-temperature thermal stability and heat resistance and a remarkably low melt viscosity, and thus is excellent not only in processability, but also in productivity, processability, moldability and blendability, when it is blended with other resins. Also, the continuous bulk polymerization process is equipped with a devolatilizer and enables the bulk tetrapolymer to be produced at low cost and high efficiency.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 7, 2012
    Inventors: Dong Cheol Sohn, Sup Joo Lee, Byung Yoon Ahn
  • Patent number: 8193271
    Abstract: Process for preparing an aqueous polymer composition using water-soluble free radical chain regulators.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: June 5, 2012
    Assignee: BASF SE
    Inventors: Oihana Elizalde, Matthias Gerst
  • Publication number: 20120071372
    Abstract: The present invention relates to a method of removing and preventing water and condensate blocks in wells by contacting a subterranean formation with a composition comprising a low molecular weight fluorinated copolymer having perfluoro alkyl moieties which are no longer than C6. A fluorinated copolymer of low molecular weight of about 50,000 g/mol and a method of preparing the same are also disclosed.
    Type: Application
    Filed: March 18, 2011
    Publication date: March 22, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CHERYL LYNN IACONELLI, GERALD ORONDE BROWN, CHRISTOPHER JAMES MARTIN, Erick J. Acosta
  • Publication number: 20110263805
    Abstract: The present invention provides: resins which can be used for various applications such as radical curable resin compositions, colorant-dispersed compositions, and photosensitive resin compositions; resin compositions; and means for producing the resins. Specifically, the present invention provides an ?-allyloxymethylacrylic copolymer having in its main chain a structural unit represented by formula (1): wherein R is a hydrogen atom or a C1-C30 organic group.
    Type: Application
    Filed: December 28, 2009
    Publication date: October 27, 2011
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventor: Tomomasa Kaneko
  • Patent number: 7989567
    Abstract: To provide a method for producing a water/oil repellent composition which can impart water/oil repellency to a surface of an article and has excellent durability (wash durability and heavy-rain durability) and an article which has water/oil repellency and is less susceptible to deterioration of water/oil repellency when it is washed or in heavy rain. A method for producing a water/oil repellent composition which comprises polymerizing a monomer component comprising the following monomer (a) in coexistence with the following compound (x) in a medium in the presence of a surfactant and a polymerization initiator: monomer (a) is a compound of the formula (Z—Y)nX wherein Z is a C1-20 polyfluoroalkyl group or the like, Y is a bivalent organic group or a single bond, n is 1 or 2, and X is a polymerizable unsaturated group; and the compound (x) is a compound having at least two groups of —(CH2)a—CHR1—(CH2)b—SH, wherein R1 is a methyl group or an ethyl group, a is an integer of from 0 to 2, and b is 0 or 1.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: August 2, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Kazunori Sugiyama, Yuuichi Oomori, Minako Shimada
  • Publication number: 20110183093
    Abstract: The present invention provides a pressure-sensitive adhesive (PSA) sheet which is formed using a non-toluene solvent-based acrylic PSA composition, and which minimizes corrosion of metals not in contact with the PSA sheet. PSA sheet 1 has PSA layers 21, 22 formed from a solvent-based PSA composition. The PSA composition includes, within an organic solvent that is substantially free of toluene substances, an acrylic polymer synthesized in presence of a sulfur-containing chain transfer agent. Moreover, in a gas generation test whereby PSA sheet 1 is heated at 85° C. for one hour, the emission of sulfur-containing gas is 0.043 ?g or less per 1 cm2 surface area of PSA sheet 1, when converted to SO42?.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 28, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shouhei WADA, Akiko TAKAHASHI, Mitsuyoshi SHIRAI, Toshihide SUZUKI, Kenichi YAMAMOTO
  • Publication number: 20110136980
    Abstract: Processes for making a core and core-shell copolymers are provided herein. Processes for making crosslinked elastomeric core particles includes emulsion polymerizing, in the presence of a radical polymerization initiator, a polymerization mixture containing at least one ethylenic elastomeric monomer, at least one crosslinking agent, and at least one sulfur-containing additive of the formula I below, where R and Z are defined herein. The core-shell copolymers formed are useful for example as additives in polymer matrices such as for modifying impact strength and improving optical properties.
    Type: Application
    Filed: August 4, 2009
    Publication date: June 9, 2011
    Applicant: Arkema France
    Inventors: Rosangela Pirra, Philippe Hajji
  • Patent number: 7923518
    Abstract: The present application provides novel nitrile rubbers comprising repeating units of at least one ?,?-unsaturated nitrile, at least one conjugated diene and optionally one or more further copolymerizable monomers which nitrile rubbers are distinguished by a specific calcium content as well as a specific chlorine content and dispose of specific thio end groups. Additionally, an improved polymerization and work-up process is provided to produce the aforementioned nitrile rubbers.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: April 12, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Patent number: 7893176
    Abstract: 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: Grant
    Filed: March 23, 2007
    Date of Patent: February 22, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Timothy D. Shaffer, Michael F. McDonald, David Y. Chung, Robert N. Webb, Deborah J. Davis, Pamela J. Wright
  • Patent number: 7837829
    Abstract: An aqueous dispersion of a polymer, obtainable by emulsion polymerization of compounds (monomers) having unsaturated radicals in the presence of at least two different polymerization regulators A) and B), wherein A) is a compound selected from ?-methylstyrene dimer and hydrocarbons which form a pentadienyl or 1-phenylallyl radical on abstraction of a hydrogen atom and B) is a compound having a mercapto group, the amount of B) being more than 2 parts by weight per 100 parts by weight of monomers.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: November 23, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Gaschler, Marc Schroeder, Oliver Birkert, Christoph Hamers
  • Patent number: 7829259
    Abstract: A resin for photoresist compositions is disclosed with excellent resolution and line edge roughness characteristics. A photoresist composition and a method for forming a resist pattern using such a resin are also disclosed. The resin has a hydroxyl group bonded to a carbon atom at a polymer terminal, and the carbon atom in the ?-position to the hydroxyl group has at least one electron attractive group.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: November 9, 2010
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Hada, Masaru Takeshita, Shogo Matsumaru, Hiroaki Shimizu
  • Patent number: 7829606
    Abstract: High durable polarized film comprising a radiation curable PSA layer for lamination in TFT/LCD applications have high humidity and heat resistance. In one embodiment, the adhesive comprises a UV curable acrylic polymer, a compatible tackifier, a multifunction unsaturated oligomer, and a long chain alkyl acrylate monomer.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: November 9, 2010
    Assignee: Henkel AG & Co. KGaA
    Inventors: Ming Chang Lu, Peter D. Palasz
  • Publication number: 20100267912
    Abstract: The present invention relates to a method of preparing a vinyl chloride polymer, and more precisely, a method of preparing a vinyl chloride polymer having excellent processability by raising a final polymerization temperature up to 5˜20° C. from an first polymerization temperature.
    Type: Application
    Filed: February 5, 2007
    Publication date: October 21, 2010
    Applicant: LG Chem, Ltd.
    Inventors: Seong-Yong Ahn, Kyung-Hyun Kim, Young-Suk Kim, Jong-Hun Cho, Chang-Ryang Jang
  • Patent number: 7807767
    Abstract: The present invention provides a method for producing acryl syrup by bulk polymerization, comprising a step of preparing a mixture comprising monomer component and 2,4-diphenyl-4methyl-1-pentene; a step of heating the mixture to the initial reaction temperature; and a step of adding an polymerization initiator having the half-life of not more than 30 minutes at 5-80° C., wherein the initial reaction temperature is controlled so that the polymerization initiator has the half-life of up to 30 minutes. The method of the present invention has such advantages that reaction runaway does not occur, the control of molecular weight and conversion rate is possible even at low exothermic temperature, and a partially polymerized acryl syrup can also be prepared therefrom.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: October 5, 2010
    Assignee: LG Chem, Ltd.
    Inventors: No-ma Kim, Jae-gwan Lee, Suk-ky Chang
  • Patent number: 7790822
    Abstract: A hyperbranched polymer having pendent olefinic groups and comprising polymer units derived from one or more terminally-unsaturated, acyclic aliphatic diene and polymer units derived from maleic anhydride. Optionally, the hyperbranched polymer may further comprise polymer units derived from one or more 1-alkenes and/or a chain transfer agent. A process to prepare the hyperbranched polymer comprises contacting maleic anhydride with at least one terminally unsaturated acyclic aliphatic diene having at least 7 carbon atoms in the presence of an effective amount of a radical initiator in an aprotic solvent under dilute conditions.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: September 7, 2010
    Inventors: Stephen Ernest Jacobson, Patricia Metzger Cotts
  • Patent number: 7700704
    Abstract: The present invention provides a method for producing an (meth)acrylate syrup by bulk polymerization which is characterized by: a) using (meth)acrylate ester monomer; and b) using 2,4-diphenyl-4methyl-1-pentenol singly or together with a thiol chain transfer agent as a chain transfer agent, c) initiating polymerization by adding an initiator having the half-life of up to 30 minutes at 55-80° C. of initial reaction temperature, so as to maintain the peak reactor temperature below 95° C. and the reactor conversion rate as 5-50 weight %. The method for producing an (meth)acrylate syrup of the present invention has such advantages that reaction runaway does not occur, the control of molecular weight and conversion rate is possible even at low exothermic temperature without stirring failure, and a partially polymerized (meth)acrylate syrup can also be prepared therefrom.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: April 20, 2010
    Assignee: LG Chem, Ltd.
    Inventors: No-ma Kim, Jae-gwan Lee, Suk-ky Chang
  • Publication number: 20100029876
    Abstract: A polymerization accelerator includes a specific thiol compound. A curable composition of excellent thermal stability contains the polymerization accelerator. A cured product is obtained from the curable composition. The polymerization accelerator includes a thiol compound having two or more groups represented by Formula (1) below: wherein R1 is a hydrogen atom or a C1-10 alkyl group, and m is an integer of 0, 1 or 2.
    Type: Application
    Filed: June 13, 2007
    Publication date: February 4, 2010
    Inventors: Hideo Miyata, Haruhiko Ikeda, Katsumi Murofushi, Yotaro Hattori, Katsuro Urakawa
  • Patent number: 7592123
    Abstract: A resin for photoresist compositions is disclosed with excellent resolution and line edge roughness characteristics. A photoresist composition and a method for forming a resist pattern using such a resin are also disclosed. The resin has a hydroxyl group bonded to a carbon atom at a polymer terminal, and the carbon atom in the ?-position to the hydroxyl group has at least one electron attractive group.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: September 22, 2009
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Hada, Masaru Takeshita, Shogo Matsumaru, Hiroaki Shimizu
  • Patent number: 7579403
    Abstract: Stain resistant composition comprises a hyperbranched polymer having pendent olefinic groups and comprising polymer units derived from one or more terminally-unsaturated, acyclic aliphatic diene and polymer units derived from maleic anhydride. Optionally, the hyperbranched polymer may further comprise polymer units derived from one or more 1-alkenes and/or a chain transfer agent. A method to provide stain resistance to a substrate comprises applying the stain resistant composition to said substrate. Suitable substrates include textiles and hard surfaces.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: August 25, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephen Ernest Jacobson, Patricia Metzger Cotts