Polymer Derived From Acrylic Or Methacrylic Esters, Or Vinyl Acetate Monomer Patents (Class 525/330.3)
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Water-soluble polymers reduced in molecular weight, process for production thereof and usage thereof
Patent number: 7732527Abstract: The invention relates to water-soluble polymers reduced in molecular weight, a process for production of the same, and usage thereof.Type: GrantFiled: February 19, 2004Date of Patent: June 8, 2010Assignee: Hymo CorporationInventor: Motosuke Ono -
Patent number: 7728079Abstract: The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid F1 comprising a postcrosslinker, heating the water-absorbing polymeric formations in contact with the fluid F1 to a temperature in a range from 40 to 300° C. to obtain postcrosslinked water-absorbing polymeric formations P2, the water-absorbing polymeric formations P1 having a thermal stability, as determined in accordance with the test method described herein, of less than 3.0%.Type: GrantFiled: February 24, 2006Date of Patent: June 1, 2010Assignee: Evonik Degussa GmbHInventors: Jörg Harren, Jörg Issberner, Mirko Walden, Rainer Teni, Franck Furno, Peter Werle, Hans-Peter Krimmer
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Publication number: 20100129550Abstract: Pigments for inkjet inks are controllably functionalised to improve water-dispersibility, ozone resistance, etc., by irradiation of the pigment particle with high energy radiation, such as gamma radiation in air or by plasma activation, to form a stable functionalisable intermediate pigment particle, then activating the stable functionalisable intermediate, e.g. by heating, in the presence of a functionalising precursor (e.g. a polymer or polymerisable monomer) to form a modified pigment particle having one or more functionalising group grafted onto the pigment particle.Type: ApplicationFiled: December 22, 2005Publication date: May 27, 2010Inventors: John D. Goddard, Alan R. Pitt, Elizabeth A. Simister, Mark Bradley, Anais F. Ronot
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Patent number: 7723439Abstract: A process for producing a polyfluoroalkyl (meth)acrylate, which comprises isolating, from a reaction mixture containing a polyfluoroalkyl (meth)acrylate obtained by reacting a polyfluoroalkyl iodide of the formula CnF2n+1(CH2)mI (wherein n is an integer of from 2 to 7, and m is an integer of from 1 to 4) with a metal (meth)acrylate in tert-butanol, said polyfluoroalkyl (meth)acrylate by the following steps (1) to (3): (1) a step of taking out a crude liquid from the reaction mixture by solid-liquid separation; (2) a step of distilling the crude liquid to separate it into compound group A of compounds having a lower boiling point than the polyfluoroalkyl (meth)acrylate and compound group B of the polyfluoroalkyl (meth)acrylate and compounds having a higher boiling point than the polyfluoroalkyl (meth)acrylate; and (3) a step of distilling and purifying the polyfluoroalkyl (meth)acrylate from the compound group B in the presence of a polymerization inhibitor.Type: GrantFiled: January 8, 2009Date of Patent: May 25, 2010Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Taiki Hoshino, Ryuji Seki
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Patent number: 7723425Abstract: The present invention relates to a composition containing modified block copolymer dispersants and dispersible inorganic or organic pigments. The block copolymers are prepared by atom transfer radical polymerisation (ATRP) and modified with a salt forming group. The pigment composition is useful for preparing coating compositions, prints, images, inks or lacquers and other disperse systems.Type: GrantFiled: March 21, 2006Date of Patent: May 25, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Clemens Auschra, Ernst Eckstein, Marie-Odile Zink, Andreas Mühlebach
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Publication number: 20100093931Abstract: Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer, said unsaturated polymer being based on a conjugated diolefin and at least one other copolymerizable monomer, in the presence of a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, hydrogen and said homogeneous or heterogeneous catalyst is passed through a multistage agitated reactor, comprising a cylindrical, elongated shell having closed ends and separated by baffles into a multiplicity of discrete chambers with access from one chamber to another through concentric circular openings, axially centered with said baffles and a continuous rotatable shaft extending concentric with said baffles within said shell with at least one impeller attached thereto positioned in each chamber, said continuous rotatable shaft and said circular openings providing annular openings and said hydrogenated polymer being withdrawn at the opposite end of the multistaType: ApplicationFiled: July 21, 2009Publication date: April 15, 2010Applicant: LANXESS INC.Inventors: GARRY REMPEL, QINMIN PAN, LIFENG ZHANG
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Publication number: 20100092871Abstract: Binder for an electrode of an electrochemical system having a non-aqueous electrolyte, said binder comprising a first polymer which has functional groups capable of reacting with a crosslinking agent and is crosslinked with said crosslinking agent, the crosslinked first polymer forming a three-dimensional network in which a second polymer chosen from fluoropolymers is imprisoned.Type: ApplicationFiled: February 8, 2008Publication date: April 15, 2010Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE, INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLEInventors: Franck Medlege, Helene Rouault, Naceur Belgacem, Anne Blayo
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Patent number: 7696138Abstract: A novel reaction product and method for making the reaction product. The reaction product is a copolymer obtained by reacting together i) an acylated alkylacrylate copolymer having a number average molecular weight ranging from about 5,000 to about 500,000; ii) a hydrocarbyl acylating agent having a number average molecular weight ranging from about 500 to about 5000; and iii) a compound selected from the group consisting of (a) a polyamine; (b) a polyol; and (c) an aminoalcohol to provide a functionalized polyalkylacrylate copolymer. According to the reaction, a mole ratio of component (i) to (ii) ranges from about 1:10 to about 5:1.Type: GrantFiled: June 18, 2007Date of Patent: April 13, 2010Assignee: Afton Chemical CorporationInventors: Naresh C. Mathur, John T. Loper, Akhilesh Duggal
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Publication number: 20100072421Abstract: A particulate water-absorbent agent containing a polyacrylate salt-type water-absorbent resin. The agent has an absorption capacity without load of 28 g/g or higher and has a diffusion absorption index of 1.40 to 10.0 g/g min. The amount of water-soluble components in the agent, with stirring, is 15-60% by mass. The difference between this amount and the amount of water-soluble components, without stirring, is 15-50% by mass. Also disclosed is a method of making the above-identified agent.Type: ApplicationFiled: February 28, 2008Publication date: March 25, 2010Applicant: Nippon Shokubai Co., Ltd.Inventors: Takahiro Kitano, Takaaki Kawano, Katsuyuki Wada
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Publication number: 20100043969Abstract: Pressure-sensitive adhesive tape made of a flat, support material each side of which is coated with a pressure-sensitive adhesive, the pressure-sensitive adhesive on at least one side being produced from a monomer mixture comprising a monomer of the formula CH2?CH(R1)(COOR2), where R1=H or CH3 and R2 is an alkyl radical having 1 to 10 carbon atoms or H and the homopolymer possesses a static glass transition temperature of <?30° C.Type: ApplicationFiled: October 2, 2009Publication date: February 25, 2010Applicant: TESA SEInventors: Marc Husemann, Torsten Runge, Stephan Zollner
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Patent number: 7652112Abstract: A polymer extender composition comprising monomers copolymerized in the following percentages by weight: (a) from about 5% to about 90% of a monomer of the formula I: R1—OC(O)—C(R)?CH2??(I) (b) from about 5% to about 85% of vinylidene chloride, vinyl chloride, vinyl acetate, or a mixture thereof, (c) from about 0.5% to about 3% of a monomer of the formula II: HO—CH2—NH—C(O)—C(R)?CH2??(II) (d) from about 0.5% to about 3% of a monomer of the formula III HO—CH2CH2—OC(O)—C(R)?CH2??(III) and (e) from about 1% to about 5% of a monomer of the formula IV: H—(OCH2CH2)m—O—C(O)—C(R)?CH2??(IV) (f) from 0% to about 25% of methyl methacrylate, vinylbenzyl chloride, styrene or a mixture thereof, wherein each R is independently H or CH3; R1 is a linear or branched or cyclic alkyl chain having from about 4 to about 18 carbon atoms, and m is 2 to about 10.Type: GrantFiled: July 6, 2005Date of Patent: January 26, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Ying Wang, John J. Fitzgerald
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Patent number: 7649054Abstract: A curable composition is described comprising a Michael donor component, a polyacryl component, and 1) an ethylenically unsaturated monomer having a reactive azlactone functional group, or 2) an ethylenically unsaturated monomer having a reactive ring-opened azlactone functional group. A telechelic polymer that is the reaction product of these components is also described.Type: GrantFiled: November 14, 2007Date of Patent: January 19, 2010Assignee: 3M Innovative Properties CompanyInventors: Kevin M. Lewandowski, Duane D. Fansler, Babu N. Gaddam
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Publication number: 20100010166Abstract: Silane-terminated prepolymers which contain, on at least one silicon atom, at least one hydrolyzable aryloxy type functional group. The use of these prepolymers, containing silyl-aryloxy terminated groups, in adhesive sealant formulations increases their reactivity so enabling the use of metal-based catalysts, which are in most cases toxic and act as oxidation catalysts, to be avoided or their quantity to be reduced compared with the standard quantity used in conventional formulations, yet ensuring considerably shorter cross-linking times than those of formulations based on known silane-terminated prepolymers.Type: ApplicationFiled: September 14, 2007Publication date: January 14, 2010Applicant: N.P.T. S.R.L.Inventors: Alessandro Galbiati, Paolo Galbiati
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Publication number: 20100004152Abstract: Synthetic microgel polymer compositions are useful for treating and/or modifying hard surfaces, in particular by promoting the hydrophilization thereof, notably in cleaning or rinsing operations.Type: ApplicationFiled: December 12, 2006Publication date: January 7, 2010Applicant: RHODIA OPERATIONSInventors: Katerina Karagianni, Claire Pitois
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Patent number: 7642321Abstract: A curable composition is described comprising a Michael donor component, a polyacryl component, and 1) an ethylenically unsaturated monomer having a reactive azlactone functional group, or 2) an ethylenically unsaturated monomer having a reactive ring-opened azlactone functional group. A telechelic polymer that is the reaction product of these components is also described.Type: GrantFiled: March 27, 2007Date of Patent: January 5, 2010Assignee: 3M Innovative Properties CompanyInventors: Duane D. Fansler, Kevin M. Lewandowski, Babu N Gaddam
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Publication number: 20090318622Abstract: The invention concerns methods for grafting bioactive polymers on a prosthetic material, the materials obtainable by said method and applications thereof. More specifically, the invention concerns a method for directly grafting polymers on the surface of prosthetic materials.Type: ApplicationFiled: June 7, 2007Publication date: December 24, 2009Inventors: Véronique Migonney, Gérard Helary, Flavie Noirclere
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Patent number: 7632892Abstract: Provided are an acrylic copolymer composition, a method for preparing an acrylic copolymer, and a vinyl chloride resin composition including the acrylic copolymer. The acrylic copolymer composition includes 5-15 wt % of a crosslinking agent and an alkyl acrylate monomer constituting an alkyl acrylate crosslinked polymer and 85-95 wt % of methyl methacrylate and at least one monomer selected from the group consisting of alkyl acrylate and alkyl methacrylate. Addition of the acrylic copolymer to the vinyl chloride resin composition enhances the foaming property of the vinyl chloride resin. Combination of the acrylic copolymer with an impact modifier further enhances the impact strength of the vinyl chloride resin.Type: GrantFiled: September 3, 2004Date of Patent: December 15, 2009Assignee: LG Chem, Ltd.Inventors: Yong-Hun Lee, Jung-sup Han, Hyung-Jun Son
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Patent number: 7629419Abstract: It is an object of the invention to provide a method for producing a modified polymer compound and a production apparatus of a modified polymer capable of producing a modified polymer compound with a high purity in a short time, and such a modified polymer compound. The invention provides a method for producing a modified polymer compound, which comprises chemically modifying a polymer compound in a supercritical fluid or a high temperature and high pressure fluid, said modified polymer compound being composed of monomer units obtainable by chemically modifying part of or all of monomer units composed of the polymer compound before modification reaction.Type: GrantFiled: October 16, 2002Date of Patent: December 8, 2009Assignee: Sekisui Chemical Co., Ltd.Inventors: Katsunori Toyoshima, Toshio Tada, Yohei Nishimura
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Patent number: 7625445Abstract: An aggregate for making a molded article and a method of making the aggregate is disclosed. The aggregate consists of an acrylate based resin matrix and anti abrasive particles chiefly quartz particles having a size of between 0.1 mm and 1.2 mm, at least 30 percent of the anti abrasive particles being broken particles having irregular shape with sharp edges silanized and non-silanized. The aggregate includes fine powders, cross linking agent and Peroxides. The molded article made from the aggregate has anti-abrasive properties and “look and feel” of natural material.Type: GrantFiled: September 13, 2004Date of Patent: December 1, 2009Inventors: Chirag Parekh, Ashwin Parekh
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Patent number: 7625989Abstract: Processes for making temporary wet strength additives, more particularly, processes for oxidizing a homo-crosslinking monomeric unit present in a polymer having a homo-crosslinking monomeric unit and a cationic monomeric unit to produce a temporary wet strength additive are provided.Type: GrantFiled: June 21, 2007Date of Patent: December 1, 2009Assignee: The Procter & Gamble CompanyInventors: Robert Lee Barcus, Khosrow Parviz Mohammadi
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Patent number: 7622531Abstract: The present invention relates to a powder paint composition comprising at least (a) a thermosetting polymer having functional groups capable of reacting with ?-hydroxyalkylamide units (b) a compound comprising ?-hydroxyalkylamide units and (c) a deceleration agent, capable of reversibly blocking the functional groups of polymer (a). The deceleration agent is present in an amount sufficient to block at least 9% of the total amount of functional groups of polymer (a). The present invention relates also to the use of a specific amine compound as a deceleration agent in a powder paint composition.Type: GrantFiled: June 10, 2004Date of Patent: November 24, 2009Assignee: DSM IP Assets B.V.Inventors: Antonia Urmanova, Eimbert Gerrit Belder, Jurjen Bolks, Coenraad Maarten Gehrels
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Patent number: 7622533Abstract: Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.Type: GrantFiled: August 6, 2007Date of Patent: November 24, 2009Assignee: Nerites CorporationInventor: Bruce P. Lee
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Publication number: 20090280318Abstract: Provided is a new adhesive polyolefin resin composition, containing 1 to 100% by weight of a high polymer structure, that has good heat resistance and excellent adhesion performance to polyolefins and various polar materials, wherein a polyolefin segment (A) is bonded with an addition polymer segment (B) of a non-olefinic vinyl monomer and a reactive group is introduced into the addition polymer segment (B) and an adhesive or dispersion obtained therefrom.Type: ApplicationFiled: December 8, 2006Publication date: November 12, 2009Applicant: MITSUI CHEMICALS, INC.Inventors: Tomoaki Matsugi, Junji Saito, Hideyuki Kaneko, Norio Kashiwa, Shin-ichi Kojoh, Takayuki Onogi, Motoaki Isokawa, Seiji Ota, Shigeyuki Yasui
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Patent number: 7608663Abstract: The invention provides methods for preparing polymers bearing a terminal propionic acid. The method involves first reacting a water soluble and non-peptidic polymer comprising at least one hydroxyl group with a tertiary alkyl acrylate in the presence of a catalyst to form a propionic acid ester of the polymer, wherein the polymer has a weight average molecular weight of at least about 10,000 Da; and then treating the propionic acid ester of the polymer with a strong acid to form a propionic acid of the polymer.Type: GrantFiled: January 21, 2005Date of Patent: October 27, 2009Assignee: Nektar TherapeuticsInventors: Antoni Kozlowski, Samuel P. McManus
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Patent number: 7601675Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with a polyamine salt of an imide of polymaleic anhydride. The salt may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions of this invention are more environmentally friendly than some current technology.Type: GrantFiled: October 16, 2007Date of Patent: October 13, 2009Assignee: Baker Hughes IncorporatedInventors: David J. Poelker, JoAnn McMahon, John A. Schield
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Patent number: 7598321Abstract: Disclosed is a composition which comprises or consists essentially of a high melt index ethylene acid copolymer comprising monomer units derived from ethylene, an alkyl (meth)acrylate, a (meth)acrylic acid, and an optional comonomer. Also disclosed is a composition comprising the ethylene acid copolymer crosslinked with a polyamine, a polyvalent metal salt, or combinations thereof. Also disclosed is a solution of the ethylene acid copolymer which can be used for solutions application to substrates.Type: GrantFiled: August 2, 2006Date of Patent: October 6, 2009Assignee: E. I. du Pont de Nemours and CompanyInventor: Charles J. Talkowski
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Patent number: 7598331Abstract: Processes for making temporary wet strength additives, more particularly, processes for oxidizing a homo-crosslinking monomeric unit present in a polymer comprising the homo-crosslinking monomeric unit and a cationic monomeric unit to produce a temporary wet strength additive are provided.Type: GrantFiled: February 16, 2006Date of Patent: October 6, 2009Assignee: The Procter & Gamble CompanyInventors: Robert Lee Barcus, Khosrow Parviz Mohammadi
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Patent number: 7598303Abstract: A process for making an aqueous dispersion is provided. More specifically, a process for making an aqueous dispersion having at least two polymeric components is provided.Type: GrantFiled: January 24, 2006Date of Patent: October 6, 2009Assignee: Rohm and Haas CompanyInventor: Willie Lau
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Patent number: 7572863Abstract: The present invention relates to the development of hydrophobically modified polymers [HMPs], which have emerged as promising materials in diverse fields such as paints, cosmetics, oils, food and textiles. They are used as thickeners in these applications. In our study, the hydrophobic modification on PAA was performed using hydrophobic compounds obtained from naturally occurring materials such as Cashew Nut Shell Liquid, [CNSL]. The DCCI coupling method was chosen for the hydrophobic modification of PAA. A series of hydrophobically modified PAAs were synthesized with different degrees of hydrophobic contents and were characterized by solution rheology.Type: GrantFiled: September 6, 2005Date of Patent: August 11, 2009Assignees: Countil of Scientific and Industrial Research, Ecole Superieur de Physique et Chimie Industrielles de la Ville de Paris (ESPCI)Inventors: Manohar Virupax Badiger, Prakash Purushot Wadgaonkar, Ashish Kishori Lele, Aarti Subhash Shedge, Dominque Hourdet, Patrick Perrin, Christophe Chassenieux
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Patent number: 7563831Abstract: A method for curing a chemical composition, the composition containing at least one or more binders having ethylenically unsaturated groups, as well as one or more initiators for triggering a radical polymerization. The method includes a thermal curing step, in which the curing of the composition is effected by a radical polymerization of the binder, which is triggered by a thermal initiator and is carried out under protective gas. Paint films having improved mechanical properties can be produced using the method according to the present invention.Type: GrantFiled: December 23, 2005Date of Patent: July 21, 2009Assignee: Daimler AGInventors: Markus Bischof, Elisabeth Gemmler, Fritz Mezger, Thomas Raith, Christoph Ruechardt
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Patent number: 7557166Abstract: A gel-type polymer electrolyte, wherein said polymer comprises (A) an ethylene-unsaturated carboxylic acid copolymer or a derivative thereof and (B) a polyalkylene oxide having a hydroxyl group at one terminal thereof or a derivative thereof, which are bonded together by an ester bond. The gel-type polymer electrolyte has a high ionic conductivity, and makes it possible to provides a cell which has excellent charge/discharge characteristics at low temperatures as well as at high temperatures.Type: GrantFiled: October 18, 2001Date of Patent: July 7, 2009Assignees: Du Pont-Mitsui Polychemicals Co. LtdInventors: Noboru Oyama, Yuki Fujimoto, Yoshiyuki Iwase, Kouichi Nishijima
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Publication number: 20090163365Abstract: The present invention relates to a water-swellable material comprising an inherently crosslinked polymer matrix and inorganic solid particles bound therein with a time-dependent swelling behavior that corresponds to a water uptake of at least 7.5 times the inherent weight of the hybrid material within one hour, as well as the applications thereof. The present invention further relates to a method for manufacture of such a water-swellable hybrid material.Type: ApplicationFiled: April 4, 2006Publication date: June 25, 2009Inventors: Wulf Bentlage, Reinmar Peppmoller, Jürgen Kunstmann, Oliver Zindel
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Publication number: 20090148717Abstract: Crosslinked films having electro-optic activity, methods for making the films, polymers useful in making the films, and devices that include the films. The films include a host crosslinked polymer having aligned polarizable chromophore moieties and aligned guest polarizable chromophore compounds.Type: ApplicationFiled: December 7, 2007Publication date: June 11, 2009Applicant: WASHINGTON, UNIVERSITY OFInventors: Kwan-Yue Jen, Jingdong Luo, Tae-Dong Kim
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Patent number: 7544740Abstract: 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: GrantFiled: February 15, 2005Date of Patent: June 9, 2009Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz
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Publication number: 20090123689Abstract: A carpet cushion has attached thereto or thereon a layer of polymer composition comprising, consisting essentially of, consisting of, or produced from a fatty acid-modified ionomer and optionally blended or coextruded with an ethylene-containing polymer wherein the ionomer comprises, consists essentially of, consists of, or is produced from an ethylene copolymer and a fatty acid.Type: ApplicationFiled: November 7, 2008Publication date: May 14, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Donna Lynn Visioli, Gregory E. Hindman
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Publication number: 20090118433Abstract: A process for producing a polyfluoroalkyl (meth)acrylate, which comprises isolating, from a reaction mixture containing a polyfluoroalkyl (meth)acrylate obtained by reacting a polyfluoroalkyl iodide of the formula CnF2n+1(CH2)mI (wherein n is an integer of from 2 to 7, and m is an integer of from 1 to 4) with a metal (meth)acrylate in tert-butanol, said polyfluoroalkyl (meth)acrylate by the following steps (1) to (3): (1) a step of taking out a crude liquid from the reaction mixture by solid-liquid separation; (2) a step of distilling the crude liquid to separate it into compound group A of compounds having a lower boiling point than the polyfluoroalkyl (meth)acrylate and compound group B of the polyfluoroalkyl (meth)acrylate and compounds having a higher boiling point than the polyfluoroalkyl (meth)acrylate; and (3) a step of distilling and purifying the polyfluoroalkyl (meth)acrylate from the compound group B in the presence of a polymerization inhibitor.Type: ApplicationFiled: January 8, 2009Publication date: May 7, 2009Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Shoji FURUTA, Taiki Hoshino, Ryuji Seki
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Publication number: 20090118434Abstract: There is disclosed pressure sensitive adhesive composition for polarization films use in the case of pasting the polarization films by means of crossed Nicols at ?0 and 90 degrees to the front and rear sides of a liquid crystal cell which composition comprises an acrylic copolymer (A) of a(meth) acrylic ester and a monomer having a cross-linkable functional group in the molecule each as a monomer component and a cross-linking agent (B), wherein the storage elasticity of the composition after cross-linking at 0 to 50° C. is in the range of 105 to 109 Pa, and the glass transition temperature (Tg) thereof is minus 20° C. or higher. The pressure sensitive adhesive composition is capable of providing optically functional films which are imparted with very excellent light leakage resistance without the occurrence floating peeling of films under the condition of high temperature and high humidity, when used for pasting polarization films by means of crossed Nicols at ?0 and 90 degrees.Type: ApplicationFiled: December 29, 2008Publication date: May 7, 2009Applicant: LINTEC CORPORATIONInventors: Takayuki ARAI, Mikihiro KASHIO, Eiko KOZUKUE
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Publication number: 20090110924Abstract: A pressure-sensitive adhesive for an optical film of the present invention comprises a (meth)acrylic polymer comprising 50 to 99.99% by weight of alkyl (meth)acrylate monomer unit and 0.01 to 30% by weight of a photocrosslinkable monomer unit having an unsaturated double bond-containing polymerizable functional group and a photocrosslinkable moiety different from the functional group. A pressure-sensitive adhesive layer is formed from the pressure-sensitive adhesive on at least one side of an optical film, wherein the photocrosslinkable moiety of the (meth)acrylic polymer in the pressure-sensitive adhesive is crosslinked by active energy ray irradiation. The pressure-sensitive adhesive can form the pressure-sensitive adhesive layer with a high level of durability and preferable workability.Type: ApplicationFiled: October 29, 2008Publication date: April 30, 2009Applicant: NITTO DENKO CORPORATIONInventors: Shinichi INOUE, Yuusuke TOYAMA, Mizue NAGATA, Toshitsugu HOSOKAWA
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Patent number: 7511102Abstract: A liquid sealing agent used for automobile parts, electric parts, various kinds of machine parts and the like exhibits good oil resistance, heat resistance, adhesiveness and flexibility. A vinyl polymer has at least one crosslinkable silyl group and can yield a cured product exhibiting an oil resistance superior to that of a cured product from a reference polymer obtained by replacing the repeating unit thereof with butyl acrylate alone, in any one item of the immersion test according to JIS K 6258 for the land use 3-5 lubricating oil specified in JIS K 2215.Type: GrantFiled: January 25, 2007Date of Patent: March 31, 2009Assignee: Kaneka CorporationInventors: Nobuhiro Hasegawa, Yoshiki Nakagawa
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Patent number: 7501165Abstract: A retardation film according to the present invention consists of a single-layer film in which a birefringent chain polymer is oriented, the polymer having as a repeating unit (A), a structure represented by the following general formula (V): wherein R3 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; R4 and R8 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, a linear or branched alkoxyl group having 1 to 4 carbon atoms, a linear or branched thioalkoxyl group having 1 to 4 carbon atoms, halogen, a nitro group, an amino group, a hydroxyl group, or a thiol group (where R4 and R8 are not simultaneously hydrogen atoms); and R5, R6, and R7 each independently represent a hydrogen atom or a substituent.Type: GrantFiled: June 3, 2005Date of Patent: March 10, 2009Assignee: Nitto Denko CorporationInventors: Yutaka Ohmori, Michie Sakamoto, Shuusaku Nakano, Takahisa Konishi, Seiji Umemoto
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Patent number: 7491772Abstract: The purpose of the invention is to obtain a water-dispersible adhesive composition capable of coating in an aqueous system and, particularly, an adhesive composition capable of preparing a removable water-dispersible acrylic adhesive sheet with less contamination to the surface of an adherend and having high resistance to water intrusion during wafer polishing, which is particularly suitable as an adhesive sheet for use in semiconductor wafer processing. The invention relates to a water-dispersible acrylic adhesive composition, which includes an acryl emulsion polymer obtainable by an emulsion polymerization of a monomer mixture containing an alkyl (meth)acrylate ester; and a crosslinker which is a carbodiimide crosslinker or a hydrazine crosslinker, in which the acryl emulsion polymer has a glass transition temperature of from ?80 to ?20° C.Type: GrantFiled: December 22, 2006Date of Patent: February 17, 2009Assignee: Nitto Denko CorporationInventors: Katsuhiko Kamiya, Tomonari Naito, Satomi Yoshie
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Patent number: 7488782Abstract: A process for producing a hydrogenated polymer, which includes a step of hydrogenating aromatic rings of an aromatic vinyl compound—(meth)acrylate copolymer. In the process, the copolymer having a ratio, A/B, of from 0.25 to 4.0 (A is a molar number of constitutional units derived from the (meth)acrylate monomer, and B is a molar number of constitutional units derived from the aromatic vinyl monomer) is hydrogenated in a solvent in the presence of a catalyst which is composed of zirconium oxide supporting palladium. By the process, a highly transparent, hydrogenated polymer is stably and rapidly produced for a long period of time or repeatedly.Type: GrantFiled: February 27, 2007Date of Patent: February 10, 2009Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Yuuichi Sugano, Yasuhiro Kushida, Tatsuya Yamauchi, Hideyuki Sato, Yoshikazu Shima
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Patent number: 7473740Abstract: The present invention relates to a method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer, obtained by radical polymerisation controlled by reversible addition-cleavage with thiocarbonylthio agents, Said method comprising the step of contacting said polymer with an ozone-containing gas, during which ozone reacts with the one or several thiocarbonylthio ends.Type: GrantFiled: October 21, 2004Date of Patent: January 6, 2009Assignee: Rhodia ChimieInventors: Samir Zard, Béatrice Sire, Philippe Jost
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Patent number: 7470738Abstract: A non-aqueous absorbent comprising a crosslinked polymer which contains a structural unit having a carboxyl group and/or a sulfonate group in an amount of 20 to 100% weight in its molecule and in which from 30 to 100% by mol of the protons in the carboxyl group and/or the sulfonate group have been substituted by onium cations; a non-aqueous gel made of this non-aqueous absorbent and an organic solvent; and a non-aqueous absorbent sheet and a non-aqueous absorbent agent containing the non-aqueous absorbent.Type: GrantFiled: December 24, 2002Date of Patent: December 30, 2008Assignee: Sanyo Chemical Industries, Ltd.Inventors: Takashi Sumiya, Kazuya Ohtani, Takeaki Yamaguchi, Youji Fujiura
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Patent number: 7439311Abstract: The present invention provides a method for producing a polymer by conducting polymerization in a polymerization reactor having an inner wall covered with an anti-fouling agent comprising an aqueous solution containing a polyvinyl alcohol obtained through saponification of a polyvinyl ester that contains monomer units having a silyl group. In the present invention, the polyvinyl alcohol satisfies the following formulae (I) and (II): 370<P×S<9000 ??(I) where P indicates the viscosity-average degree of polymerization of the polyvinyl alcohol, and S indicates the content (mole %) of the monomer units having a silyl group of formula (1) in the polyvinyl alcohol; 0.2/100?(A?B)/(B)?75/100 ??(II) where A indicates the content (ppm) of silicon atoms in the polyvinyl alcohol, and B indicates the content (ppm) of silicon atoms in the polyvinyl alcohol that was washed with sodium hydroxide-containing methanol and then washed with methanol by Soxhlet extraction.Type: GrantFiled: January 18, 2008Date of Patent: October 21, 2008Assignee: Kuraray Co., Ltd.Inventors: Masaki Kato, Kazuyuki Somemiya, Takeshi Kusudou, Naoki Fujiwara
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Patent number: 7439308Abstract: A method for producing a (meth)acrylic polymer having crosslinkable silyl groups at the termini, comprising a step of adding a hydrosilane compound having a crosslinkable silyl group to an alkenyl-terminated (meth)acrylic polymer (A), which is prepared by atom transfer radical polymerization, in the presence of a platinum hydrosilylation catalyst. The amount of the platinum hydrosilylation catalyst is 0.1 to 10 mg on a platinum metal basis per kilogram of the alkenyl-terminated (meth)acrylic polymer (A). An object of the invention is to provide a method for producing a (meth)acrylic polymer having terminal crosslinkable silyl.Type: GrantFiled: April 18, 2003Date of Patent: October 21, 2008Assignee: Kaneka CorporationInventors: Shigeki Ohno, Yoshiki Nakagawa, Kenichi Kitano, Masanao Takeda, Nao Fujita
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Patent number: 7423092Abstract: The present invention relates to radiation-curable compositions useful as ink vehicles or inks, in particular UV-curable inks, such as UV-litho inks, comprising a (meth)acrylated styrene allyl alcohol copolymer obtained from the (meth)acrylation of a styrene allyl alcohol (SAA) copolymer with (meth)acrylic acid and/or one or more alkyl(meth)acrylates, and at least one alkoxylated acrylated monomer.Type: GrantFiled: August 26, 2004Date of Patent: September 9, 2008Assignee: Cytec Surface Specialties, SAInventors: Isabelle Fallais, Luc Lindekens, Paul Gevaert
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Publication number: 20080176994Abstract: Ethylene vinyl acetate compositions that have been partially crosslinked using organic peroxides are disclosed, as well as methods for their production. The crosslinked compositions have low melt index values and increased tensile strength, leading to flexibility and heat resistant properties.Type: ApplicationFiled: January 18, 2007Publication date: July 24, 2008Inventors: Gerd A. Allermann, Hitesh A. Fruitwala
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Patent number: 7402624Abstract: Graft copolymers with segmented (or block) arms and a process for preparing the same. Such polymers are particularly useful in formulating air-dry clear coat and color coat lacquers used in automotive refinishing.Type: GrantFiled: November 8, 2004Date of Patent: July 22, 2008Assignee: E.I. du Pont de Nemours & CompanyInventor: Sheau-Hwa Ma
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Patent number: 7402632Abstract: 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: GrantFiled: November 22, 2002Date of Patent: July 22, 2008Assignee: tesa AktiengesellschaftInventors: Marc Husemann, Stephan Zöllner