Oxide Or Hydroxide Patents (Class 528/489)
  • Patent number: 9688782
    Abstract: The present invention relates to a method for separation of a polymer from a polymer solution or dispersion, wherein (i) a solution or dispersion of a polymer in an organic solvent is atomized by being brought into contact with water vapor in an atomizer container; (ii) the mixture obtained in the atomizer container is routed into a polymer degasification container and flows through same, wherein the organic solvent present in the polymer particles is driven at least partially out of the polymer particles due to the thermal contact between the polymer particles and the water vapor and transitions into the gas phase (iii) the mixture exiting from the polymer degasification container is routed into a phase separator (1) and the organic solvent present in the gas phase is separated from the polymer particles and the condensed water vapor; and (iv) the polymer particles and the condensed water vapor are routed into a phase separator (2) in order to separate the polymer particles from the condensed water vapor.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 27, 2017
    Assignee: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.
    Inventors: Ulrich Wendler, Marcus Vater, Carsten Gehrhardt, Frank Herzig
  • Patent number: 9023981
    Abstract: The use of non aqueous dispersions NADs has enabled the development of fast setting sheet fed inks, for example. However either due to residual monomers or fractions of initiators, these NAD's have an objectionable odor. A chemical means of dramatically reducing the odor of the NAD's is thus presented. In exemplary embodiments of the present invention, such a chemical treatment can include an amine/alkali mixture in a coupling solvent. In exemplary embodiments of the present invention, the coupling solvent can be one or more of an alcohol, glycol or glycol ether, such as, for example, isopropyl alcohol. In exemplary embodiments of the present invention the amine can be an alkyl amine, such as, for example, diethyl amine, or various other amines, whether alone or in combination. In exemplary embodiments of the present invention, the alkali can be one or more of sodium hydroxide, potassium hydroxide and ammonium hydroxide, whether alone or in any combination thereof.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: May 5, 2015
    Assignee: Sun Chemical Corporation
    Inventors: Ramasamy Krishnan, Mark Schneider, David Klein
  • Patent number: 8962792
    Abstract: A process for preparing an aliphatic or cycloaliphatic epoxy resin including the steps of: (I) reacting a mixture of (a) an aliphatic or cycloaliphatic hydroxyl containing material, (b) an epihalohydrin, (c) a basic acting substance, (d) a non-Lewis acid catalyst, and (e) optionally, a solvent, forming an epoxy resin composition; (II) subjecting the epoxy resin composition produced in step (I) to a separation process to remove (A) “light” components such as, for example, solvent used in the epoxidation reaction, if any, unreacted epihalohydrin, and co-products such as di(epoxypropyl)ether; (B) unreacted aliphatic or cycloaliphatic hydroxyl containing material, if any; (C) partially epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, MGE; (D) fully epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, DGE, such that the (E) aliphatic or cycloaliphatic polyfunctional epoxy resin product remaining contains no more than 50% by weight of s
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: February 24, 2015
    Assignee: Dow Global Technologies LLC
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 8937149
    Abstract: The present invention provides nano-sized particles of melanin, and the method for formation of the melanin particles comprise the following steps: adding a base to a dopamine.H+X?-containing solution (wherein H+X? is an acid) and allowing an acid-base neutralization reaction; and forming nano-sized particles of melanin by controlling the addition of nucleic dopamine.H+X? (a) to base (b) at a ratio of a:b=1:0.1-1, and allow concurrent or consecutive formation of melanin by oxidation curing of the dopamine in air (polymerization). The manufacturing method according to the present invention can produce nano-sized melanin particles in a short period of time. Furthermore, the nano-sized melanin particles made according to the present invention are distinctive from conventional solvents containing dispersions of natural melanin and synthetic melanin, and have excellent application in various fields.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: January 20, 2015
    Assignee: SNU R&DB Foundation
    Inventors: Jin Kyu Lee, Kuk Youn Ju
  • Patent number: 8921513
    Abstract: Methods for forming a low chlorine content washed polyarylene sulfide are described. Methods include washing a polyarylene sulfide that includes aryl halide endgroups with a solution that includes a disulfide compound. The solution can also include a catalyst and an organic solvent. During the disulfide wash, a nucleophilic substitution reaction occurs between the disulfide compound and aryl halides endgroups of the polyarylene sulfide. The nucleophilic substitution reaction is carried out at conditions to prevent chain scission of the polyarylene sulfide that includes the aryl halide endgroups. Compositions and products formed with the low chlorine content disulfide washed polyarylene sulfide are also described.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: December 30, 2014
    Assignee: Ticona LLC
    Inventors: Rong Luo, Xinyu Zhao
  • Patent number: 8883959
    Abstract: A method for producing a polyarylene sulfide resin, comprising: producing a slurry (I) containing a solid alkali metal sulfide by allowing a hydrous alkali metal sulfide, or a hydrous alkali metal hydrosulfide and an alkali metal hydroxide, and an aliphatic cyclic compound (c1) that can be ring-opened by hydrolysis to react with each other while conducting dehydration in the presence of a non-hydrolyzable organic solvent; adding an aprotic polar organic solvent after the production of the slurry (I) and distilling off water to conduct dehydration; and conducting polymerization by allowing a polyhaloaromatic compound (a), an alkali metal hydrosulfide (b), and an alkali metal salt (c2) of a hydrolysate of the compound (c1) to react with each other in the slurry (I) in a state where the amount of water existing in the reaction system is 0.02 moles or less relative to 1 mole of the aprotic polar organic solvent.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: November 11, 2014
    Assignee: DIC Corporation
    Inventor: Toshio Hinokimori
  • Patent number: 8809488
    Abstract: A film of a carboxylated polymer of formula (I): wherein the sum of x, y and z is an integer from 10 to 10,000 and degree of hydrolysis is 0.05 or greater provides gas separation materials in which the degree of hydrolysis may be used to tune the selectivity of the gases to an optimal required range. Such films may be prepared by casting a film of a polymer of formula (II): wherein n is an integer from 10 to 10,000, and hydrolyzing all or a portion of the —CN groups to form —COOH groups.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 19, 2014
    Assignee: National Research Council of Canada
    Inventors: Naiying Du, Michael D. Guiver, Gilles P. Robertson, Jingshe Song
  • Patent number: 8742061
    Abstract: It is aimed to provide a polyarylene sulfide film for an acoustic instrument vibrating plate excellent in heat resistance, molding processability, acoustic properties, and also heat moldability. Provided is a polyarylene sulfide film wherein the elongation at break in either a longitudinal direction or a width direction of the film is 100% or more and 250% or less, and the Young's modulus in either a longitudinal direction or a width direction of the film is 1.5 GPa or more and less than 4 GPa.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: June 3, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuya Machida, Yasuyuki Imanishi, Masatoshi Ohkura, Takuji Higashioji
  • Patent number: 8735533
    Abstract: This invention relates to polymeric violet anthraquinone colorants having at least one poly(oxyalkylene) chain attached to an anthraquinone structure. Such colorants exhibit bright violet shade, excellent compatibility with organic media or aqueous systems, good lightfastness, and excellent thermal stability. The water soluble poly(oxyalkylene) substituted polymeric violet anthraquinone colorants also possess high water solubility, high color strength, non-staining properties, and high pH stability. The processes and methods for making such polymeric violet anthraquinone colorants and their use for coloring consumer products are also provided.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 27, 2014
    Assignee: Milliken & Company
    Inventors: Xiaoyong Michael Hong, Robert L Mahaffey
  • Patent number: 8729218
    Abstract: The present invention relates to a manufacturing method of polyaspartic acid. More particularly, the present invention relates to a manufacturing method of polyaspartic acid comprising steps of carrying out condensation polymerization of maleic anhydride and ammonia in the presence of a polar solvent without active hydrogen to give polysuccinimide and hydrolyzing the resulting polysuccinimide to obtain polyaspartic acid. Specifically, the present invention is characterized in that the quality of the synthetic product, polysuccinimide and polyaspartic acid, is improved by minimizing the decomposition and the degradation of the maleic acid during the process of the polymerization resulted from the introduction of substituent to maleic acid.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: May 20, 2014
    Assignee: Aekyung Petrochemical Co., Ltd.
    Inventors: Jeong Gon Kim, Jong Hwa Lee, Sung Duck Seo, Yeong Im Yu
  • Patent number: 8653150
    Abstract: The present invention relates to a method for decomposing, in the presence of subcritical water, a thermosetting resin comprising a polyester moiety and a crosslinking moiety therewith to provide a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, and collecting the compound in an efficient yield, specifically, which comprises steps of: (I) decomposing the thermosetting resin in the presence of subcritical water to provide a solid comprising a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, (II) subjecting the solid to an organic solvent to dissolve the compound into the organic solvent, wherein the organic solvent has a higher solubility which can dissolve the compound than that of water, and (III) collecting, separating or isolating the compound from the organic solvent.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 18, 2014
    Assignees: Panasonic Corporation, International Center for Environmental Technology Transfer
    Inventors: Takumi Izumitani, Takaharu Nakagawa, Masaru Hidaka, Keishi Shibata, Junko Matsui
  • Patent number: 8609790
    Abstract: The invention provides a production process of a granular poly(arylene sulfide) by polymerizing a sulfur source and a dihalo-aromatic compound in an organic amide solvent by a polymerization process containing a phase-separation polymerization step, wherein the production process contains a step I of adding an aromatic compound in a proportion of 0.01 to 20 mol per 100 mol of the organic amide solvent into the liquid phase containing the organic amide solvent and a formed polymer within the polymerization reaction system, said liquid phase being in the phase-separated state, after the phase-separation polymerization step; a step II of cooling the liquid phase within the polymerization reaction system; and a step III of collecting the formed polymer from the liquid phase.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Kureha Corporation
    Inventors: Kenji Suzuki, Tomoyoshi Koizumi, Yoshinori Shiojiri
  • Patent number: 8557949
    Abstract: Process for the production of di- and poly(diamino diphenyl methane) comprising the steps of (a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce a reaction mixture containing di- and polyamines; (b) neutralizing the reaction mixture containing di- and polyamines; (c) separating the neutralized reaction mixture into an organic phase containing di- and polyamines and an aqueous phase; (d) further treating the organic phase separated off in step (c) by (d1) washing with water followed by (d2) separating the washed mixture into an organic phase and an aqueous phase and (d3) further fractionation of the organic phase to produce purified di- and polyamines on the one hand and aniline/water on the other hand; (e) further treating the aqueous phase separated off in step (c) by (e1) washing with aniline followed by (e2) separating the washed mixture into an aqueous phase and an organic phase and (e3) further treatment of the aqueous phase to remove the aniline thereby leaving an efflu
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: October 15, 2013
    Assignee: Huntsman International LLC
    Inventors: Robert Carr, Johannes Lodewijk Koole, Willem Van Der Borden
  • Patent number: 8546518
    Abstract: A method is provided for producing a polyarylene sulfide by reacting a sulfidizing agent with a dihalogenated aromatic compound in an organic polar solvent in the presence of an alkali metal hydroxide, the method includes <Step 1>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 230° C. to less than 245° C. (T1a) is not less than 30 minutes and less than 3.5 hours and that the conversion ratio of the dihalogenated aromatic compound at the end of the step is 70 to 98 mol. % and <Step 2>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 245° C. to less than 280° C. (T2) is not less than 5 minutes and less than 1 hour.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: October 1, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Takeshi Unohara, Hiroyuki Isago, Toru Nishimura, Masahiro Inohara
  • Patent number: 8546520
    Abstract: The present invention relates to a method of reducing allergenicity of natural rubber latex products caused by allergens by reducing extractable protein levels found for said products, said method comprising the steps of: subjecting said products to a wash in a strong alkaline solution to deteriorate the allergens, and a system for reducing allergenicity of natural rubber latex products caused by allergens by reducing extractable protein levels found for said products, and a product, such as a glover or condom, manufactured from natural rubber latex.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: October 1, 2013
    Assignee: Budev B.V.
    Inventors: Herman Feil, Mark Domselaar
  • Patent number: 8530531
    Abstract: Method for the recycling of polyvinyl butyral based on obtaining recycled polyvinyl butyral (PVB) from laminated glass which is shattered and the polyvinyl butyral (PVB) is separated. The sheet obtained is cut into pieces and cleaned to eliminate dirt and foreign matter. The solid state PVB is subjected to a first polyvinyl butyral (PVB) purification stage with a chemical treatment with a first reagent and a final chemical treatment with a second reagent. The obtained purified polyvinyl butyral is suitable to be used in the manufacture of laminated glass.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 10, 2013
    Assignee: L'Urederra Fundacion para el Desarrollo Technologico y Social
    Inventors: Claudio Fernández Acevedo, Luis Martínez de Morentín Osaba, Edurne Osés Arteta, Germán Medina Herrera, María Antonia Fernández Fernández
  • Patent number: 8507644
    Abstract: Methods of making metal-terephthalate polymers from a polyester ethylene terephthalate or terephthalic acid produces high yield and high purity reaction products for a range of metals. Among the preferred metal compounds employed in the processes are metal oxides and metal hydroxides. The methods are preferably carried out at a low pressure and can produce metal-terephthalate polymer powders containing small crystals which can be employed to enhance properties of polymers or disperse metals in specific applications by thermal decomposition of metal-terephthalate polymers.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: August 13, 2013
    Assignee: Chem Engineering Energy
    Inventors: Daniel Eric Steinmeyer, Jonathan Lyle Wistrom
  • Patent number: 8501904
    Abstract: A process for the preparation of a polyol which includes reacting an amino-group-containing starter compound with an alkylene oxide in the presence of a catalyst to form a polyol, wherein the catalyst is based on a compound selected from the group consisting of alkali metal hydroxides, alkali, alkaline earth metal hydrides, alkaline earth metal carboxylates, and alkaline earth hydroxides, and wherein the catalyst is present in an amount of from 0.004 to 0.1 wt. % based on the amount of polyol; and neutralizing the polyol with from 0.75 to 1 mol of sulfuric acid per mol of catalyst used.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: August 6, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Klaus Lorenz, Arnulf Werner, Marcus Eichmann
  • Patent number: 8487049
    Abstract: A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the superabsorbent polymer gel. The process requires treating the superabsorbent polymer fines with a caustic, followed by mixture with polymerizable monomer solution, and polymerizing the mixture of the superabsorbent polymer fines and monomer to form the aqueous fluid absorbent polymer. In the process, the fines are incorporated into the new polymer gel and become indistinguishable there from. The gel may then be comminuted into a particulate dried and then separated into a portion having a desired minimum particle size in a fines portion having less than the desired size. The particulate may then be coated with a surface crosslinking agent and surface additives and heated for surface conversion.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: July 16, 2013
    Assignee: Evonik Stockhausen, LLC
    Inventors: Gonglu Tian, Scott J. Smith, Janet Pate-Linton
  • Patent number: 8445629
    Abstract: A method for producing an acid group-containing polyarylene sulfide of the present invention includes a reaction step of reacting a polyhaloaromatic compound (a), an alkali metal hydrosulfide (b), and an alkali metal carboxylate (c) in the presence of a solid alkali metal sulfide and a lithium ion.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: May 21, 2013
    Assignee: DIC Corporation
    Inventors: Toshio Hinokimori, Nobuhiko Yamauchi, Takashi Furusawa
  • Patent number: 8445631
    Abstract: The present disclosure relates to a process for neutralizing a sulfonated block copolymer with a metal compound, to metal-neutralized block copolymers, and to various articles comprising the metal-neutralized block copolymers, e.g., in form of a water vapor permeable membrane which comprises the metal-neutralized block copolymers. The present disclosure further relates to a means and a method for storing and stabilizing a polar component such as a metal compound in a non-polar liquid phase by immuring the polar component in micelles of the sulfonated block copolymer in the non-polar liquid phase.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: May 21, 2013
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Carl Lesley Willis
  • Patent number: 8426552
    Abstract: A method for producing an acid group-containing polyarylene sulfide of the present invention includes a reaction step of reacting a polyhaloaromatic compound (a), an alkali metal hydrosulfide (b), an alkali metal carboxylate (c), and an aromatic compound (d) having an elimination group and an acid group, which function in a nucleophilic reaction, in the presence of a solid alkali metal sulfide.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: April 23, 2013
    Assignee: DIC Corporation
    Inventors: Toshio Hinokimori, Nobuhiko Yamauchi, Takashi Furusawa
  • Patent number: 8404754
    Abstract: A process for recycling a coloured thermoplastic material comprising an absorbed disperse dye comprises contacting the optionally comminuted coloured thermoplastic material with a caustic wash and recovering an at least partly colour-modified thermoplastic composition from the caustic wash.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 26, 2013
    Assignee: Colormatrix Europe Limited
    Inventors: Mark Frost, Fuquan Zeng, Victoria Sayer
  • Patent number: 8399608
    Abstract: A process for the preparation of polyether alcohols by reacting at least one alkylene oxide with at least one unsaturated starter having at least one active hydrogen atom per molecule under basic catalysis, that the alkoxylation is carried out in at least two stages, in stage (I) the alkoxylation of the starter or starters being carried out with not more than 10 mol of alkylene oxide per mole of starter with a catalyst concentration of not more than 0.0085 mol of basic catalyst per mole and in stage (II) and the optionally following stages, the alkoxylated starter or starters from stage (I) being reacted with further alkylene oxide at a catalyst concentration of at least 0.01 mol of basic catalyst per mole of starter.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 19, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Matthias Zipplies, Thomas Ostrowski, Ulrich Annen, Markus Klumpe
  • Patent number: 8389673
    Abstract: An aryl composition includes aryl ether oligomers. These compositions may be prepared by reaction of one or more dihalobenzenes with one or more dihydroxybenzenes by an Ullman ether reaction. The oligomers may have two or more benzene rings and include terminal halogen, e.g., bromine (Br), or hydroxyl (OH) groups. These oligomers may be brominated to form flame retardant compositions for thermoplastic polymers.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 5, 2013
    Assignee: Chemtura Corporation
    Inventors: Larry D. Timberlake, Julia E. Holland
  • Patent number: 8362195
    Abstract: An ionically conductive polymer has the chemical structure 1 as shown herein. Examples of the polymer include 4,4?-(4-(1H-benzo[d]imidazol-2-yl)butane-2,2-diyl)diphenol, sulfonated poly(aryl ether sulfone) containing benzimidazole backbone, sulfonated poly(aryl ether sulfone) containing carboxylic acid backbone, and sulfonated poly(aryl ether sulfone) containing benzimidazole backbone from carboxylic acid containing sulfonated poly(aryl ether sulfone). The polymer has intrinsic ion conducting properties so that it is effectively conductive even under low water conditions. In one embodiment, the polymer has an ionic conductivity of at least 1×10?5 S/cm at a temperature of 120° C. when the polymer is substantially anhydrous.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: January 29, 2013
    Inventors: Ramanathan S. Lalgudi, Jeffrey Boyce, Jay Sayre, Bhima R. Vijayendran
  • Patent number: 8349974
    Abstract: A biaxially oriented polyarylene sulfide film which has an excellent elongation at break and flatness is provided. The biaxially oriented film may be a biaxially oriented polyarylene sulfide film which is substantially composed of a polyarylene sulfide resin (A), wherein one of the elongations at break in the machine direction and in the transverse direction of the film is not lower than 110%; one of the breaking stresses in the machine direction and in the transverse direction of the film of the film is not higher than 200 MPa; and both of the heat shrinkage ratio in the machine direction of the film and that in the transverse direction of the film at 260° C. for 10 minutes are not less than 0% and not more than 10%.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: January 8, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuya Machida, Masatoshi Ohkura, Yasuyuki Imanishi
  • Patent number: 8344094
    Abstract: An optical material is provided that has a high transmittance, a high refractive index, a low Abbe constant, a high secondary dispersion property, and a low water absorption rate. The optical material includes a polymer of a mixture which contains: a sulfur-containing compound represented by the following general formula (1): a sulfur-containing compound represented by the following general formula (2): and an energy polymerization initiator, in which a content of the sulfur-containing compound represented by the chemical formula (2) is 10% by weight or more to 60% by weight or less, an Abbe constant (?d) of the polymer of the mixture satisfies 18<?d<23, and a secondary dispersion property (?g,F) thereof satisfies 0.68<?g,F<0.69.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidefumi Iwasa, Shigeo Kiso, Terunobu Saitoh, Toshiji Nishiguchi
  • Patent number: 8329832
    Abstract: A method for producing a cyclic polyarylene sulfide, wherein a cyclic polyarylene sulfide is produced by heating a reaction mixture which is composed of at least a linear polyarylene sulfide (a), a sulfidizing agent (b), a dihalogenated aromatic compound (c) and an organic polar solvent (d). This method for producing a cyclic polyarylene sulfide is characterized in that not less than 1.25 liters of the organic polar solvent is used per 1 mole of the sulfur content in the reaction mixture. This method enables to efficiently produce a cyclic polyarylene sulfide, more specifically cyclic oligoarylene sulfide by an economical and simple process in short time.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: December 11, 2012
    Assignee: Toray Industries, Inc.
    Inventors: Shunsuke Horiuchi, Kohei Yamashita, Kayo Tsuchiya, Koji Yamauchi
  • Patent number: 8318895
    Abstract: A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the superabsorbent polymer gel. The process requires treating the superabsorbent polymer fines with a caustic, followed by mixture with polymerizable monomer solution, and polymerizing the mixture of the superabsorbent polymer fines and monomer to form the aqueous fluid absorbent polymer. In the process, the fines are incorporated into the new polymer gel and become indistinguishable there from. The gel may then be comminuted into a particulate dried and then separated into a portion having a desired minimum particle size in a fines portion having less than the desired size. The particulate may then be coated with a surface crosslinking agent and surface additives and heated for surface conversion.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: November 27, 2012
    Assignee: Evonik Stockhausen, LLC
    Inventors: Gonglu Tian, Scott J. Smith, Janet Pate-Linton
  • Patent number: 8309682
    Abstract: A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the superabsorbent polymer gel. The process requires treating the superabsorbent polymer fines with a caustic, followed by mixture with polymerizable monomer solution, and polymerizing the mixture of the superabsorbent polymer fines and monomer to form the aqueous fluid absorbent polymer. In the process, the fines are incorporated into the new polymer gel and become indistinguishable there from. The gel may then be comminuted into a particulate dried and then separated into a portion having a desired minimum particle size in a fines portion having less than the desired size. The particulate may then be coated with a surface crosslinking agent and surface additives and heated for surface conversion.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: November 13, 2012
    Assignee: Evonik Stockhausen, LLC
    Inventors: Gonglu Tian, Scott J. Smith, Janet Pate-Linton
  • Patent number: 8304464
    Abstract: The invention relates to a method for mixing a polyester with caustic material including providing a polyester, preferably PET, mixing the polyester with the caustic material; and heating the mixture in temperature stages defined as a function of a reaction sequence of the reaction between the PET and the caustic material.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: November 6, 2012
    Assignee: Cleanaway PET International GmbH
    Inventor: Ulrich Schmidt
  • Patent number: 8263734
    Abstract: The techniques provide a system and a method of producing polyphenylene sulfide (PPS) polymer. The PPS polymer is produced by reacting a sulfur source and a dihaloaromatic compound in the presence of a polar organic compound in a polymerization mixture in a polymerization vessel. The PPS polymer is washed with a base to lower the oligomer content of the PPS polymer and thus the off-gassing during processing.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: September 11, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeffrey S. Fodor, Aubrey South, Jr.
  • Patent number: 8202965
    Abstract: The invention concerns processes for hydrolyzing polyphosphoric acid in a never-dried spun multifilament yarn, comprising: a) removing surface liquid from filaments in a never-dried spun multifilament yarn; and b) contacting the yarn with a hot surface to hydrolyze polyphosphoric acid, wherein the filaments remain substantially unfused; wherein the hot surface has a surface temperature of at least about 150° C.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: June 19, 2012
    Assignees: E.I. du Pont de Nemours and Company, Magellan Systems International, LLC
    Inventor: Christopher William Newton
  • Patent number: 8183336
    Abstract: In a process for producing a poly(arylene sulfide) by polymerizing a sulfur source and a dihalo-aromatic compound in the presence of an alkali metal hydroxide in an organic amide solvent, the production process comprises washing a polymer obtained by the polymerization with a hydrophilic organic solvent containing water in a proportion of 1 to 30% by weight, thereby collecting a purified polymer, the content of nitrogen contained in an extract extracted by a mixed solvent containing 40% by weight of acetonitrile and 60% by weight of water from the purified polymer is at most 50 ppm on the basis of the weight of the polymer, and a poly(arylene sulfide), the content of nitrogen contained in an extract extracted by a mixed solvent containing 40% by weight of acetonitrile and 60% by weight of water from the purified polymer is at most 50 ppm on the basis of the weight of the polymer.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: May 22, 2012
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Koichi Suzuki, Hirohito Kawama
  • Patent number: 8138233
    Abstract: In one embodiment, the invention relates to a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the polyethylene terephthalate component into a molten mixture and the molten mixture is placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. In another embodiment, the invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butane diol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: March 20, 2012
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Parminder Agarwal, Kristen Cohoon-Brister, Sandeep Dhawan, Robert Russell Gallucci, Ganesh Kannan, Kenneth Frederick Miller, Dhaval Shah
  • Patent number: 8097696
    Abstract: A method for preparing multi-arm poly(ethylene glycol) (PEG) chlorides from multi-arm PEG polyols is described. The method comprises a process, wherein the multi-arm PEG polyol is reacted with thionyl chloride to form the multi-arm PEG chloride.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 17, 2012
    Assignee: Actamax Surgical Materials, LLC
    Inventor: Henry Keith Chenault
  • Patent number: 8088834
    Abstract: The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: January 3, 2012
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Parminder Agarwal, Kristen Cohoon, Sandeep Kumar Dhawan, Robert Russell Galucci, Ganesh Kannan, Sr., Kenneth Frederick Miller, Deepak Ramaraju, Gomatam Raghavan Ravi, Dhaval Shah
  • Patent number: 8076447
    Abstract: A poly(arylene sulfide) having properties that a melt viscosity is 1 to 3,000 Pa·s as measured under conditions of a temperature of 310° C. and a shear rate of 1,216 sec?1, a pH is 7.0 to 12.0 as measured in a mixed solvent of water/acetone (volume ratio=2/1), a crystallization temperature is at most 220° C. as measured in the course of lowing the temperature of the polymer at a rate of 10° C./min from a molten state, and a whiteness degree is at least 70 as measured in the form of a melt molded or formed product, and a production process thereof.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: December 13, 2011
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Koichi Suzuki, Hirohito Kawama
  • Patent number: 8053550
    Abstract: 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: Grant
    Filed: November 21, 2005
    Date of Patent: November 8, 2011
    Assignee: Solvay (Societe Anonyme)
    Inventors: Eric Fassiau, Murielle Manin
  • Patent number: 7943724
    Abstract: Process for preparing diamino diphenyl methane and poly-(diamino diphenyl methane) comprising reacting aniline with formaldehyde in the presence of hydrogen chloride added in the gaseous form wherein the aniline contains 0.1 to 7 wt %, preferably 2 to 5 wt % of a protic chemical, preferably water.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: May 17, 2011
    Assignee: Huntsman International LLC
    Inventor: Robert Henry Carr
  • Patent number: 7928184
    Abstract: The present invention provides a method of manufacturing a stabilized polyacetal resin, comprising the step of applying a heat treatment to a polyacetal resin having an unstable terminal group in the presence of an unstable terminal group decomposer selected from the following Group I, Group II and Group III, thereby decreasing the unstable terminal group: unstable terminal group decomposer of Group I: (I) a quaternary ammonium salt of an acidic cyclic amide compound, unstable terminal group decomposer of Group II: (II) a quaternary ammonium salt of a polycarboxylic acid intramolecularly having four or more carboxyl groups and/or a quaternary ammonium salt of an aminocarboxylic acid intramolecularly having one or more carboxyl group(s), unstable terminal group decomposer of Group III: (III) a quaternary ammonium salt, wherein a compound providing a counter-anion of a quaternary ammonium salt is at least one selected from the group consisting of the following (i) to (v): (i) a carbonic acid monoester
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: April 19, 2011
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hatsuhiko Harashina, Hiroaki Nakao
  • Patent number: 7910688
    Abstract: A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the superabsorbent polymer gel. The process requires treating the superabsorbent polymer fines with a caustic, followed by mixture with polymerizable monomer solution, and polymerizing the mixture of the superabsorbent polymer fines and monomer to form the aqueous fluid absorbent polymer. In the process, the fines are incorporated into the new polymer gel and become indistinguishable there from. The gel may then be comminuted into a particulate dried and then separated into a portion having a desired minimum particle size in a fines portion having less than the desired size. The particulate may then be coated with a surface crosslinking agent and surface additives and heated for surface conversion.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 22, 2011
    Assignee: Evonik Stockhausen Inc.
    Inventors: Gonglu Tian, Scott J. Smith, Janet Pate-Linton
  • Patent number: 7902263
    Abstract: The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. In one embodiment, the invention relates to a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the polyethylene terephthalate component into a molten mixture and the molten mixture is placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: March 8, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Parminder Agarwal, Kristen Cohoon, Sandeep Dhawan, Robert Russell Gallucci, Ganesh Kannan, Kenneth Frederick Miller, Dhaval Shah
  • Patent number: 7893122
    Abstract: The present invention relates to a process for chemical recycling of PET waste that comprises, among other stages, a saponification reaction stage, wherein PET waste particles are reacted with stoichiometric or excessive amounts of a strong base metal in an alcoholic reaction media, the reaction being brought to the boiling temperature of the alcoholic reaction media, preferably at atmospheric pressure, thereby obtaining as reaction products a salt of terephthalic acid with the base metal and ethylene glycol, the latter being incorporated to the alcoholic reaction media. From this reaction it is possible to afford ethylene glycol, terephthalic acid and salts thereof, which are products with a high commercial value.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: February 22, 2011
    Inventors: Arturo Guadalupe Fregoso-Infante, Roxana Vega-Rangel, Maricruz Figueroa-Gomez-Crespo
  • Patent number: 7868132
    Abstract: A method for preparing multi-arm poly(ethylene glycol) (PEG) amines from multi-arm PEG polyols is described. The method comprises a two step process, wherein the multi-arm PEG polyol is first reacted with thionyl chloride to form a multi-arm PEG chloride, which is subsequently reacted with aqueous or anhydrous ammonia to yield the multi-arm PEG amine.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: January 11, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Henry Keith Chenault
  • Patent number: 7858731
    Abstract: The invention embraces polyester resins and containers that include surface-modified talc. The invention also embraces a method for the late introduction of surface-modified talc via a reactive carrier to achieve a polyester resin that is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: December 28, 2010
    Assignee: Wellman, Inc.
    Inventors: Walter Lee Edwards, Carl Steven Nichols, Robert Joseph Schiavone, Sharon Sue Griffith, Tony Clifford Moore
  • Patent number: 7847056
    Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: December 7, 2010
    Assignees: Kaneka Corporation
    Inventors: Etsuo Horii, Hirosuke Kawabata, Toshikazu Hirao, Akiya Ogawa, Xiaoliang Xu
  • Patent number: 7825213
    Abstract: A method of making a metal-terephthalate polymer from polyester ethylene terephthalate includes reacting polyester ethylene terephthalate with a metal compound in a non-aqueous melt environment at an elevated temperature. The elevated temperature will be greater than 270° C., and preferably rises to a temperature of about 520° C. The method is preferably carried out at a low pressure. The method may be used in the recycling of passenger vehicle tire shreds to produce a carbon black rrich ppowder that is enriched in the metal-terephthalate polymer.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: November 2, 2010
    Assignee: Chem Engineering Energy, LLC
    Inventors: Daniel Eric Steinmeyer, Alan Marc Levine, James Matthew Williams
  • Patent number: 7799836
    Abstract: The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: September 21, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Parminder Agarwal, Kristen Cohoon, Sandeep Dhawan, Robert Russell Gallucci, Ganesh Kannan, Kenneth Frederick Miller, Deepak Ramaraju, Gomatam Raghavan Ravi, Dhaval Shah