From Vinyl Chloride Patents (Class 526/344)
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Patent number: 7915366Abstract: An extrudable polyvinyl chloride composition comprising from 80 to 99.9 percent by weight polyvinyl chloride for use in extruding a first part and a second part, wherein a fusion joint between the first extruded part and the second extruded part is formed by: A) composition at least a portion of a first terminal edge of the first extruded part and a first terminal edge of the second extruded part; B) engaging the melted terminal edges; and C) maintaining pressure between the engaged terminal edges to create a fused joint having a strength that is at least 50% of the tensile strength of the extruded part as measured by ASTM D638-2a. The extruded parts can be pipe sections.Type: GrantFiled: July 29, 2009Date of Patent: March 29, 2011Assignee: Underground Solutions Technologies Group, Inc.Inventors: Mark A. Smith, Thomas Marti, Bryan St. Onge, Henri St. Onge
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Patent number: 7902308Abstract: A complex compound comprising the skeletal unit of Formula A, wherein the ring represented by C(R1)-A1-A2-(A3)x-C(R2)—C— has delocalised unsaturation and is optionally substituted via one or more of A1, A2 and A3 with atoms or groups selected from hydrogen, alkyl, aryl, halogen, or heterocyclic groups containing at least one N, S or O in a carbon ring; A1, A2 and A3 are selected from carbon, nitrogen or oxygen, R1 and R2 are each selected from chlorine, bromine or iodine; x is zero or 1, O is oxygen, E is nitrogen, phosphorus or arsenic, Q represents a divalent bridging group comprising one or more Group 14 atoms; M is a metal selected from Groups 3 to 7; X represents a monovalent atom or group covalently or ionically bonded to M; L is a mono- or bidentate molecule datively bound to M, y satisfies the valency of M and z is from 0 to 5. The complex can be used to polymerise olefins optionally with organo-A1 or -B compounds as activator.Type: GrantFiled: September 15, 2006Date of Patent: March 8, 2011Assignee: Ineos Europe LimitedInventors: Vernon Charles Gibson, Daniel Charles Howard Oakes
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Publication number: 20110046328Abstract: The invention pertains to a process wherein initiators having a half-life from 0.0001 hour to 0.05 hour at the polymerization temperature are dosed to a polymerization mixture. The dosing of such initiator allows improved control of the polymerization rate and faster polymerization rates, and the process will render a polymer with very low residual initiator levels.Type: ApplicationFiled: October 25, 2010Publication date: February 24, 2011Applicant: AKZO NOBEL N.V.Inventors: Hans WESTMIJZE, Andreas Petrus Van Swieten, Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel
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Publication number: 20110034570Abstract: The present invention provides, e.g., methods to recycle and/or reduce plastic, non-plastic, or a combination thereof, from a waste stream. The methods of the present invention include contacting the plastic waste with infrared (IR) energy at one or more frequencies and at one or more intensities, over a period of time effective to heat plastic present in the plastic waste.Type: ApplicationFiled: September 20, 2010Publication date: February 10, 2011Inventors: Peter Anthony Smith, Adam J. Koffler, Philip Mark Smith
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Publication number: 20100330372Abstract: The present invention provides coating systems for surfaces and methods for coating and repairing surfaces.Type: ApplicationFiled: May 16, 2008Publication date: December 30, 2010Applicant: JOHNSONDIVERSEY, INC.Inventors: Nathan E. Ludtke, Ryan E. Kron, Jia Liu, Christopher C. Cypcar
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Patent number: 7842769Abstract: An extrudable polyvinyl chloride composition comprising from 80 to 99.9 percent by weight polyvinyl chloride for use in extruding a first part and a second part, wherein a fusion joint between the first extruded part and the second extruded part is formed by: A) composition at least a portion of a first terminal edge of the first extruded part and a first terminal edge of the second extruded part; B) engaging the melted terminal edges; and C) maintaining pressure between the engaged terminal edges to create a fused joint having a strength that is at least 50% of the tensile strength of the extruded part as measured by ASTM D638-2a. The extruded parts can be pipe sections.Type: GrantFiled: November 13, 2006Date of Patent: November 30, 2010Assignee: Underground Solutions Technologies Group, Inc.Inventors: Mark A. Smith, Thomas Marti, Bryan St. Onge, Henri St. Onge
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Publication number: 20100267912Abstract: 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: ApplicationFiled: February 5, 2007Publication date: October 21, 2010Applicant: LG Chem, Ltd.Inventors: Seong-Yong Ahn, Kyung-Hyun Kim, Young-Suk Kim, Jong-Hun Cho, Chang-Ryang Jang
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Publication number: 20100261851Abstract: Disclosed herein are novel polymer-tethered ligands, metal complexes comprising these ligands, and the use of these complexes as chain transfer catalysts to control the molecular weight of oligomeric and polymeric materials produced in a radical polymerization process. The materials made by the processes disclosed herein have significantly reduced color, making them suitable for a wide range of color-critical end-uses, including automotive coatings.Type: ApplicationFiled: August 16, 2006Publication date: October 14, 2010Inventors: Henry Edward Bryndza, Michael Charles Grady, Sigridur Soley Kristjansdottir, Christina M. Older, Matthew Arthur Page, Joachim C. Ritter, Wilson Tam
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Publication number: 20100233461Abstract: The invention relates to a colored, multi-layered composition having a high level of Total Solar Reflectance (TSR). The composition includes a thin top, weatherable layer having a minimal amount of colored pigment suitable for optical hiding. In one embodiment a pigmented topcoat having less than 12 percent colored (non-white) pigment in a KYNAR AQUATEC emulsion (Arkema Inc.) is placed over a white elastomeric acrylic primer on a substrate to produce a colored multiplayer composition with a TSR of greater than 70%.Type: ApplicationFiled: October 3, 2008Publication date: September 16, 2010Applicant: Arkema Inc.Inventors: Kurt A. Wood, Jerrold K. Petersheim
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Publication number: 20100222533Abstract: The present invention relates to a method of producing an electret material, to a new class of electret materials and to a device comprising such electret materials.Type: ApplicationFiled: September 14, 2009Publication date: September 2, 2010Applicant: SONY CORPORATIONInventors: Nikolaus KNORR, Silvia ROSSELLI, Tzenka MITEVA, Gabriele NELLES
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Patent number: 7786228Abstract: Disclosed herein is an optimization method in a polymerization system in which heat is generated during the polymerization with an initiator.Type: GrantFiled: January 19, 2007Date of Patent: August 31, 2010Assignee: LG Chem, Ltd.Inventors: Hokyung Lee, Sujin Lee, Seungyoung Park, Jongku Lee
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Publication number: 20100190946Abstract: The present invention provides a method of preparing vinyl chloride polymer having excellent processability and high bulk density by the separate stepwise additions of vinyl chloride monomer during suspension polymerization.Type: ApplicationFiled: February 9, 2007Publication date: July 29, 2010Applicant: LG CHEM, LTDInventors: Seong-Yong Ahn, Kyung-Hyun Kim, Young-Suk Kim, Jong-Hun Cho, Chang-Ryang Jang
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Patent number: 7759458Abstract: A process for the purification of a vinyl chloride polymer containing a compound of a heavy metal by: (a) dissolving the PVC in a solvent; (b) treating the solution with at least one additive capable of adsorbing or of forming a complex with the compound of the heavy metal; (c) centrifuging the treated solution to precipitate the adsorbed or complexed compound of the heavy metal; and (d) separating the precipitate from the PVC solution.Type: GrantFiled: November 21, 2005Date of Patent: July 20, 2010Assignee: Solvay (Societe Anonyme)Inventors: Eric Fassiau, Jean-Christophe Lepers, Michaël Lannoy
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Publication number: 20100178512Abstract: A process for modifying the surface of an inorganic or organic substrate with strongly adherent nanoparticles is described, providing to the surface modified substrate durable effects like hydrophobicity, hydrophilicity, electrical conductivity, magnetic properties, flame retardance, color, adhesion, roughness, scratch resistance, UV-absorbance, antimicrobial properties, antifouling properties, antiprotein properties, antistatic properties, antifog properties, release properties. In this process, an optional first step a) a low-temperature plasma, ozonization, high energy irradiation, corona discharge or a flame is caused to act on the inorganic or organic substrate, and in a second step b) one or more defined nanoparticles or mixtures of defined nanoparticles with monomers, containing at least one ethylenically unsaturated group, or solutions, suspensions or emulsions of the afore-mentioned substances, are applied, preferably at normal pressure, to the inorganic or organic substrate.Type: ApplicationFiled: November 26, 2007Publication date: July 15, 2010Applicant: CIBA CORPORATIONInventors: Thomas Giesenberg, Pascal Hayoz, Thomas Vogel, Andreas Muhlebach, Markus Frey, Stephan Ilg, Rachel Kohli Steck, Laurent Michau, Francois Rime
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Publication number: 20100179292Abstract: Method for recovering a polymer from a liquid medium (1) substantially containing the polymer and a solvent for the latter, wherein: (a) this liquid medium (1) is injected into a reactor (2) containing a stirred substantially monophase liquid mixture comprising a major fraction by weight of a non-solvent and a minor fraction by weight of a solvent, the mixture having a composition and temperature such that the polymer precipitates therefrom progressively; (b) the polymer is recovered in the form of particles in suspension (5) in a liquid rich in non-solvent; (c) the polymer particles (9) are separated from the liquid.Type: ApplicationFiled: August 17, 2006Publication date: July 15, 2010Applicant: SOLVAY SAInventors: Eric Fassiau, Bernard Vandenhende, Jean-Raphael Caille, Jean-Christophe Lepers
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Publication number: 20100175326Abstract: A door operator is provided for operating a door leaf of a door, in particular of a swing leaf door or of a sliding door, having at least one structural member made from a plastic material. The at least one of the structural member is made from at least one of a flame-resistant material and self-extinguishing plastic material.Type: ApplicationFiled: January 8, 2010Publication date: July 15, 2010Applicant: Dorma GmbH+Co. KGInventor: Matthias DRUX
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Patent number: 7745556Abstract: A copolymer of (i) an alkyl acrylate or alkyl methacrylate and (ii) a hydroxyalkyl acrylate or hydroxyalkyl methacrylate is used as a secondary protective colloid in the suspension polymerization of vinyl chloride monomer. The alkyl group of the alkyl acrylate or alkyl methacrylate is preferably a 2-ethylhexyl group. The hydroxyalkyl group of the hydroxyalkyl acrylate or hydroxyalkyl methacrylate is preferably a hydroxyethyl group.Type: GrantFiled: December 14, 2005Date of Patent: June 29, 2010Assignee: Ineos Technologies (Vinyls) LimitedInventors: Paul A Ferguson, Jill Galligan, Raymond J Harvey
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Patent number: 7737237Abstract: The present invention concerns a controlled structure copolymer comprising at least two different parts, a first part A, amphoteric or zwitterionic, including anionic or potentially anionic units, and cationic or potentially cationic units, or zwitterionic units, and another part B, non amphoteric or zwitterionic. Said copolymer further exhibits a high potential for adaptation, through variation in its composition, in order to improve or modify the properties of compositions in which it is introduced.Type: GrantFiled: October 31, 2003Date of Patent: June 15, 2010Assignee: Phodia ChimieInventor: Mathias Destarac
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Publication number: 20100144916Abstract: Disclosed herein is a composition comprising a crosslinked organic polymer; wherein the composition has a coefficient of friction that is in a range of ±30% of a coefficient of friction for a composition comprising the same organic polymer that is not crosslinked; and wherein the composition has a lower K factor than a K factor of the composition comprising the same organic polymer that is not crosslinked; the coefficient of friction and the K factor being measured in a thrust washer apparatus as per ASTM D-3702, where the counter stationary surface in the thrust washer apparatus comprises carbon steel having a Rockwell C hardness of 18 to 22 and a 12 to 16 micro-inch surface finish.Type: ApplicationFiled: December 8, 2008Publication date: June 10, 2010Applicant: SABIC INNOVATIVE PLASTICSInventors: Domenico La Camera, Alexis Chopin, Andre Kijkuit
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Patent number: 7691953Abstract: A method is disclosed for producing polyvinyl chloride which includes mixing a vinyl chloride solution with an initiator solution in at least one high shear mixing device comprising at least one rotor/stator set producing a rotor tip speed of at least 5.1 m/sec (1000 ft/min), to form a polymerization mixture; and allowing the mixture to polymerize by free radical polymerization to form polyvinyl chloride. The polymerization mixture may be subjected to free radical polymerization conditions comprising a temperature in the range of about 20° C. to about 230° C. In some embodiments, the high shear mixing device produces a shear rate of at least 20,000 s?1. A system for carrying out the method is also disclosed.Type: GrantFiled: June 18, 2008Date of Patent: April 6, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Patent number: 7683144Abstract: The present invention relates to a process and composition for the chain stopping of vinyl chloride polymerization or copolymerization in the presence of a stable free nitroxyl radical and a phenolic antioxidant. A further subject of the invention is the use of a stable free nitroxyl radical together with a phenolic antioxidant as a chain stopping mixture for the vinyl chloride polymerization or copolymerization. A further aspect of the invention is the use of higher sterically hindered nitroxyl radicals alone as chain stopping agents for the vinyl chloride polymerization.Type: GrantFiled: April 24, 2003Date of Patent: March 23, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Alex Wegmann, Thomas Wannemacher, Dietrich Braun
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Publication number: 20100059175Abstract: The present invention relates to a surface decoration kit comprising a covering for a surface to be painted, wherein said covering is PVC-based and coated with a UV-crosslinkable polyurethane polymer-based protective varnish, and a container containing a urethane-acrylic-based paint.Type: ApplicationFiled: November 16, 2009Publication date: March 11, 2010Applicant: Tarkett SASInventor: Jean-Philippe Georges
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Publication number: 20100035049Abstract: One exemplary embodiment of the invention includes grafting a thermoplastic hot melt adhesive material to a shape memory polymer surface.Type: ApplicationFiled: April 29, 2009Publication date: February 11, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Tao Xie
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Patent number: 7655741Abstract: A process for the preparation of vinyl chloride copolymers involves free radical suspension polymerization or emulsion polymerization of a mixture of vinyl chloride, epoxide-containing vinyl monomers and further comonomers copolymerizable therewith, wherein a) from 49.5 to 90% by weight of vinyl chloride, b) from 0.01 to 0.7% by weight of epoxide-containing vinyl monomers and c) from 9.5 to 50% by weight of further comonomers copolymerizable with a) and b) are polymerized, the data in % by weight totaling 100% by weight, and from 0.001 to 0.1% by weight of one or more aliphatic or alicyclic, saturated or unsaturated dicarboxylic acids having 1 to 10 carbon atoms, or aliphatic and alicyclic, saturated and unsaturated hydroxymono-, hydroxydi- and hydroxytricarboxylic acids having 3 to 10 carbon atoms and 1 to 4 hydroxyl groups are added during or after the polymerization, and the vinyl chloride copolymer is isolated as a solid resin.Type: GrantFiled: September 6, 2005Date of Patent: February 2, 2010Assignee: Wacker Chemie AGInventors: Stephan Kaiser, Robert Hohenadel, Karl Weber, Franz Zenk, Claudia Strohmeier
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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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Publication number: 20090326179Abstract: Process for the manufacture of 1,2-dichloroethane (DCE) starting with a hydrocarbon source which is subjected to a cracking thus producing a mixture of cracking products then subjected to treatment steps to obtain a mixture of products containing ethylene. The mixture is afterwards subjected to a first separation step into a fraction enriched with the compounds that are lighter than ethylene containing some of the ethylene conveyed to a chlorination reactor in which most of the ethylene is converted to DCE, and into a fraction F1 which is subjected to a second separation step into a fraction F2 and into a heavy fraction. Fraction F2 is afterwards subjected to a third separation step into a fraction enriched with ethylene conveyed to an oxychlorination reactor in which most of the ethylene is converted to DCE, and into a fraction F3 mainly composed of ethane.Type: ApplicationFiled: June 21, 2007Publication date: December 31, 2009Applicant: SOLVAY S.A.Inventors: Dominique Balthasart, Michel Lempereur, Michel Strebelle
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Publication number: 20090311531Abstract: The present invention relates to a large-sized vinyl chloride seed with an average particle size of 0.65 to 1.5 ?m, a vinyl chloride resin with improved low-viscosity properties, and preparation methods thereof. The preparation of the large-sized vinyl chloride seed includes adding a vinyl chloride monomer, an emulsifier, and a polymerization initiator to an aqueous medium; homogenizing the mixed solution using a rotor-stator type homogenizer; and subjecting the resultant monomer droplets to a polymerization reaction.Type: ApplicationFiled: June 10, 2009Publication date: December 17, 2009Applicant: LG CHEM, LTD.Inventors: Kyung Seog Youk, Hyun Jin Shin, Han Hong Kim
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Publication number: 20090270579Abstract: Process for the manufacture of 1,2-dichloroethane (DCE) starting from a stream of ethane which is subjected to a catalytic oxydehydrogenation (ODH) producing a gas mixture containing ethylene, then dried and subjected to an absorption to be separated into a fraction enriched with the compounds that are lighter than ethylene containing some of the ethylene conveyed to a chlorination reactor in which most of the ethylene is converted to DCE, and into a fraction F1. Fraction F1 is then subjected to a desorption to be separated into a fraction enriched with ethylene conveyed to an oxychlorination reactor in which most of the ethylene is converted into DCE, and into a fraction F3.Type: ApplicationFiled: June 22, 2007Publication date: October 29, 2009Applicant: SOLVAY (Société Anonyme)Inventors: Dominique Balthasart, Michel Strebelle
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Patent number: 7598312Abstract: A process for preparing a halogenated polymer in a medium comprising liquid or supercritical carbon dioxide, comprising a step involving the radical polymerization of at least one halogenated monomer and at least one step involving cross-flow filtration; and a cross-flow filtration device.Type: GrantFiled: July 12, 2006Date of Patent: October 6, 2009Assignee: Solvay (Société Anonyme)Inventors: Jean-Marie Blaude, Roland Martin
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Publication number: 20090209679Abstract: A flow improver comprising a plurality of core-shell particles that can be formed by emulsion polymerization. The core of the core-shell particles can include a drag reducing polymer, while the shell of the particles can include repeat units of a hydrophobic compound and an amphiphilic compound. The flow improver can demonstrate increased pumping stability over conventionally prepared latex flow improvers.Type: ApplicationFiled: February 14, 2008Publication date: August 20, 2009Applicant: CONOCOPHILLIPS COMPANYInventors: Wayne R. Dreher, Kenneth W. Smith, Stuart N. Milligan, Timothy L. Burden, William F. Harris, Ray L. Johnston, Wolfgang Klesse, Gerold Schmitt, John Wey
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Publication number: 20090203868Abstract: Process for the purification of a vinyl chloride polymer (PVC) comprising at least one compound of a heavy metal, according to which: (a) the PVC is dissolved in a solvent; (b) the solution is treated with at least one additive capable of adsorbing or of forming complexes with the compound of the heavy metal; (c) the solution treated is subjected to centrifuging, so as to precipitate the adsorbed or complexed compound of the heavy metal; and (d) the precipitate is separated from the PVC solution.Type: ApplicationFiled: November 21, 2005Publication date: August 13, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Eric Fassiau, Jean-Christophe Lepers, Michael Lannoy
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Publication number: 20090149619Abstract: Process for the purification of a vinyl chloride polymer (PVC) comprising at least one compound of a heavy metal, according to which: (a) the PVC is dissolved in a water-miscible polar organic solvent; (b) an aqueous solution comprising a reagent, which is either a base capable of reacting with the compound of the heavy metal (R1) or a dispersing agent capable of stabilizing the said compound (R2), is added to the organic solution, the water being introduced in an amount (Q) such that it brings about the formation of a two-phase medium, the continuous phase of which is the organic phase; (c) the two-phase medium is subjected to stirring for a time sufficient for the reagent to be able to interact with (exert its effect on) the compound of the heavy metal; (d) the precipitation of the PVC out of this two-phase medium is brought about.Type: ApplicationFiled: November 21, 2005Publication date: June 11, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Eric Fassiau, Murielle Manin
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Patent number: 7534823Abstract: A vinyl chloride resin composition comprising 100 parts by mass of a vinyl chloride resin, (a) 0.001 to 10 parts by mass of at least one benzotriazole compound represented by general formula (I), and (b) 0.001 to 10 parts by mass of at least one salicylamide compound represented by general formula (II): wherein R1, R2, R3, and R4 each represent a hydrogen atom, a halogen atom, a hydroxyl group, a nitro group, a carboxyl group, an alkyl group, an alkoxycarbonyl group or an alkanoylamino group. wherein R represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or an alkoxy group having 1 to 12 carbon atoms.Type: GrantFiled: June 28, 2005Date of Patent: May 19, 2009Assignee: Adeka CorporationInventors: Hidehiro Ishizuka, Yutaka Yonezawa
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Patent number: 7473746Abstract: A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations. The LTMC polymerization provides the polymer with improved properties such as no free radical residue and narrow molecular weight distribution.Type: GrantFiled: February 24, 2005Date of Patent: January 6, 2009Assignee: Equistar Chemicals, LPInventors: Jia-Chu Liu, Shao-Hua Guo
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Patent number: 7446074Abstract: The invention relates to highly concentrated aqueous emulsions of peroxides comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 80%, and optionally a non-ionic surfactant with an HLB value greater than 10 selected from alkylene oxide block-copolymers, ethoxylated fatty alcohols, and ethoxyfated fatty acids. The emulsions have a low COD value and are safe, storage stable, and generally applicable.Type: GrantFiled: April 24, 2003Date of Patent: November 4, 2008Assignee: Akzo Nobel N.V.Inventors: Johannes Jacobus Theodorus De Jong, Boen Ho O, Hans Westmijze
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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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Publication number: 20080221266Abstract: The invention pertains to a process to polymerize one or more monomers wherein one or more initiators and optionally one or more surfactants are added to a polymerization mixture when the pressure in the polymerization reactor is dropping. This process allows a shorter polymerization time due to a higher pressure drop rate at the end of the polymerization reaction. Moreover, the cooling capacity of the polymerization reactor is used more efficiently.Type: ApplicationFiled: March 7, 2008Publication date: September 11, 2008Applicant: Akzo Nobel N.V.Inventors: Lambertus MEULENBRUGGE, Koen Antoon Kornelis VANDUFFEL, Hans WESTMIJZE
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Patent number: 7345127Abstract: Acrylic polymers are made by the living radical polymerization of acrylic monomers utilizing organo halide initiators with either metal-free or metal catalysts. Moreover, block copolymers of vinyl halide monomers and acrylic monomers are described by generally polymerizing either the vinyl halide monomers or acrylic monomers utilizing an organo halide initiator in the presence of either a metal catalyst or a metal-free catalyst and subsequently polymerizing thereon the remaining type of monomer.Type: GrantFiled: January 26, 2005Date of Patent: March 18, 2008Assignee: University of PennsylvaniaInventors: Virgil Percec, Tamaz Guliashvili, Anatoliy V. Popov
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Patent number: 7326804Abstract: Provided is a novel triethyleneglycol based compound, a plasticizer composition for polyvinyl chloride resin including the same, and a method of preparing the plasticizer composition. In particular, the plasticizer composition for polyvinyl chloride resin includes the novel compound, 2-(2-(2-(2-ethylhexanoyloxy)ethoxy)ethoxy)ethyl 2-ethylhexanoate, and 2-(2-(2-phenylcarbonyloxyethoxy)ethoxy)ethyl benzoate in a proper mixture ratio. A polyvinyl chloride prepared using the plasticizer composition has low heating loss, excellent adhesion, high plasticization efficiency, high elongation, high tensile strength, and high transparency.Type: GrantFiled: April 12, 2006Date of Patent: February 5, 2008Assignee: LG Chem, Ltd.Inventors: Hyunkyu Kim, Kyeseok Lee, Kyu Il Lee, Byoungkue Chun
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Publication number: 20070238844Abstract: Disclosed herein is an optimization method in a polymerization system in which heat is generated during the polymerization with an initiator.Type: ApplicationFiled: January 19, 2007Publication date: October 11, 2007Inventors: Hokyung Lee, Sujin Lee, Seungyoung Park, Jongku Lee
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Publication number: 20070232771Abstract: The present invention relates to a dispersant for manufacturing vinyl chloride resin and a method of manufacturing vinyl chloride resin using the same. More precisely, this invention relates to a dispersant which is prepared by RAFT, harbors a hydrophobic group and one or more hydrophilic groups not containing a hydroxy group, and has a polydispersity index of 1.1-2, and a method of manufacturing vinyl chloride resin using the said dispersant. The dispersant for manufacturing vinyl chloride resin of the present invention and the manufacturing method of the present invention facilitates the preparation of vinyl chloride resin characterized by even size distribution, excellent sphericity and proper particle diameter.Type: ApplicationFiled: September 8, 2006Publication date: October 4, 2007Inventors: Yi-Rac Choi, Kyung-Hyun Kim, Seong-Yong Ahn, Min-Ju Yi, Hyun-Kyou Ha
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Publication number: 20070149741Abstract: The present invention is directed to a free radical control agent of the structural formula: wherein R1 is a divalent alkyl group of 1 to 12 carbon atoms, R2 and R3 are each independently hydrogen or an alkyl group of 1 to 12 carbon atoms, and R4 is —OH or —COOH, with the proviso that the total carbon atoms of R1, R2, and R3 is no greater than 12; and wherein Y represents a functional group that is capable of activating a vinylic carbon toward free radical addition.Type: ApplicationFiled: October 19, 2006Publication date: June 28, 2007Inventor: Dane Kenton Parker
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Patent number: 7230063Abstract: The present invention is directed to a free radical control agent of the structural formula: wherein R1 is a divalent alkyl group of 1 to 12 carbon atoms, R2 and R3 are each independently hydrogen or an alkyl group of 1 to 12 carbon atoms, and R4 is —OH or —COOH, with the proviso that the total carbon atoms of R1, R2, and R3 is no greater than 12; and wherein Y represents a functional group that is capable of activating a vinylic carbon toward free radical addition.Type: GrantFiled: October 19, 2006Date of Patent: June 12, 2007Assignee: The Goodyear Tire & Rubber CompanyInventor: Dane Kenton Parker
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Patent number: 7205349Abstract: The invention relates to isomeric nonyl benzoates, processes for their preparation, mixtures of the same with alkyl phthalate, alkyl adipate, or alkyl cyclohexanedicarboxylate, and also to the use of these mixtures.Type: GrantFiled: October 27, 2003Date of Patent: April 17, 2007Assignee: Oxeno Olefinchemie GmbHInventors: Jürgen Koch, Michael Grass
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Patent number: 7153581Abstract: The invention provides organic silicone copolymers based on a) from 30 to 99% by weight of a vinylaromatic, (meth)acrylic ester, vinyl ester, olefin, diene, and/or vinyl halide monomer, and b) from 1 to 70% by weight of a mixture of at least two diorganopolysiloxanes having the general formula R1aR3-aSiO(SiR2O)nSiR3-aR1a, in which each R denotes a monovalent, optionally substituted, C1-18 alkyl or C1-18 alkoxy radical, R1 denotes a polymerizable group, a is 0 or 1, at least one a being 1, and n is an integer, where b1) from 5 to 65% by weight of the silicone component b) is a diorganopolysiloxane with n?30 and only one terminal polymerizable group R1, and b2) from 35 to 95% by weight of the silicone component b) is a diorganopolysiloxane with n?55 and with one or two terminal polymerizable groups R1.Type: GrantFiled: January 30, 2003Date of Patent: December 26, 2006Assignee: Wacker Polymer Systems GmbH & Co. KGInventor: Kurt Stark
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Patent number: 7135546Abstract: Process for recycling an article based on at least one vinyl chloride or vinylidene chloride polymer, according to which: (a) the article is cut up into fragments with a mean size of 1 cm to 50 cm in the case where it would exceed these sizes; (b) the article fragments are brought into contact with an azeotropic or quasiazeotropic mixture of water and of a solvent capable of dissolving the polymer, at a temperature of at least 120° C.; (c) the polymer dissolved in the solvent is precipitated by a reduction in pressure and by injection of steam into the solution thus obtained, which additionally results in the entrainment of the solvent-water azeotrope and thus leaves a mixture remaining which is essentially composed of water and of solid polymer particles; (d) the polymer particles are collected.Type: GrantFiled: September 18, 2000Date of Patent: November 14, 2006Assignee: Solvay (Societe Anonyme)Inventors: Bernard Vandenhende, Jean-Marie Yernaux
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Patent number: 7087693Abstract: The invention relates to a process to make and use specific diacyl peroxides in polymerization reactions. The peroxides are produced and used in a polymerization process within a short timeframe in order to overcome stability issues associated with them.Type: GrantFiled: February 20, 2003Date of Patent: August 8, 2006Assignee: Akzo Nobel N.V.Inventors: Marinus Catharinus Tammer, Johannes Jacobus Theodorus De Jong, Johannes Willibrordus Antonius Overkamp
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Patent number: 7078473Abstract: Radical polymerization process for the preparation of halogenated polymers and block copolymers. Halogenated polymers and block copolymers.Type: GrantFiled: May 16, 2003Date of Patent: July 18, 2006Assignee: Solvay (Societe Anonyme)Inventors: Patrick Lacroix-Desmazes, Romain Severac, Bernard Boutevin, Vincent Bodart, Vincent Kurowski
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Patent number: 7026420Abstract: A living polymerization process for preparation of poly(vinyl chloride) (PVC) with controlled molecular weight and molecular weight distribution is described. The polymerization reaction can be initiated by various polyhalocarbon initiators in conjunction with non-metallic reducing single electron transfer reagents as catalysts and accelerated by electron shuttles. The process occurs at room temperature in water or water-organic solvent medium. The polymerization provides PVC with a controlled molecular weight and narrow molecular weight distribution. The halogen containing polymer compositions are useful as, among others, viscosity modifiers, impact modifiers and compatibilizers.Type: GrantFiled: November 12, 2004Date of Patent: April 11, 2006Assignee: University of PennsylvaniaInventors: Virgil Percec, Anatoliy V. Popov
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Patent number: 6977288Abstract: A production process for a vinyl chloride polymer is proposed in which either vinyl chloride, or a monomer mixture comprising vinyl chloride, is polymerized in an aqueous medium inside a polymerization vessel, while heat removal is conducted using a reflux condenser. In this process, the liquid level of the contents inside the polymerization vessel is monitored using an electric wave liquid level gauge, which is disposed on the polymerization vessel and radiates microwaves with a frequency of 4 to 20 GHz. The operating efficiency of the reflux condenser can be improved, and the quantity of heat removed by the reflux condenser can be increased. Furthermore, the time required to complete the process, including the raw material addition step and/or the washing step conducted following completion of the polymerization, can be shortened.Type: GrantFiled: April 30, 2004Date of Patent: December 20, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshinori Nakahara, Masatsugu Takano, Yasuhiro Takahashi, Tadashi Amano