Patents Examined by Gennadiy Mesh
  • Pyroglutamic acid esters with improved biodegradability
    Patent number: 9452981
    Abstract: A pyroglutamic acid ester of formula (1) in which A represents a C2 to C4 alkylene group; x represents a number from 1 to 100; R? represents an aliphatic, cycloaliphatic or aromatic radical that contains at least one structural unit of formula 2, and; y represents a number from 1 to 100. The use of these pyroglutamic acid esters in quantities of 0.01 to 2% by weight for preventing the formation of gas hydrates in aqueous phases that are connected to a gaseous, liquid or solid organic phase.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 27, 2016
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Michael Feustel, Dirk Leinweber
  • Polyester ethers derived from asymmetrical monomers based upon bisanydrohexitols
    Patent number: 9447230
    Abstract: A process for producing a copolyester through the production of an AB monomer of isoidide - Isodide 2-(4-carbomethoxyphenyl) ether. In certain aspects, the AB monomer is produced by performing the steps of: protecting the 2-position of isosorbide with a protecting group; functionalizing the 5-position of isosorbide with a suitable leaving group to form a reactive ester; nucleophilicly displacing the leaving group in a reaction with an alkali metal alkoxide or phenoxide to give an isoidide ether through a stereochemical inversion of the 5-position; and removing the protective moiety to create the AB monomer. In certain embodiments, the copolyester is produced by melting the AB monomer and a polyester, optionally with a catalyst.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: September 20, 2016
    Assignee: New Jersey Institute of Technology
    Inventors: Michael Jaffe, Willis Hammond, Xianhong Feng, Anthony East
  • Method for producing polyhydroxyalkanoate having long main chain structure
    Patent number: 9447441
    Abstract: A polyhydroxyalkanoate copolymer of 3HB (3-hydroxybutyrate), 3HP (3-hydroxypropionate) and 5HV (5 -hydroxyvalerate) disclosed. The polyhydroxyalkanoate can be used for bioplastic or biomaterial. A method for producing the polyhydroxyalkanoate comprises culturing a microorganism belonging to Ralstonia genus in a culture medium that comprises lactone and/or hydroxy acid or salt of hydroxy acid as a carbon source.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: September 20, 2016
    Assignee: RIKEN
    Inventors: Keiji Numata, Miwa Yamada, Yoshiharu Doi
  • 1,4-butanediol-containing composition
    Patent number: 9434706
    Abstract: A 1,4-butanediol (1,4BG)-containing composition having high thermal stability, and having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: September 6, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yusuke Izawa, Masaru Utsunomiya, Norikazu Konishi, Kouta Tanaka, Takayuki Suzuki, Shinichirou Matsuzono
  • Resin for oxygen-absorbing adhesive and oxygen-absorbing adhesive
    Patent number: 9428316
    Abstract: A two-component curable oxygen-absorbing composition comprises a polyester comprising structural units derived from an acid component (A) and an acid component (B), wherein the ratio of the acid component (A) to total acid components is 70 mol % to 95 mol %, the ratio of the acid component (B) to total acid components is 0 mol % to 15 mol %, the polyester has a glass transition temperature of ?20° C. to 0° C., the resin is cured using a diisocyanate hardening agent, and the acid component (A) is a tetrahydrophthalic acid or a derivative thereof, or a tetrahydrophthalic acid anhydride or a derivative thereof, and the acid component (B) is a phthalic acid or an analog thereof.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: August 30, 2016
    Assignee: Toyo Seikan Group Holdings, Ltd.
    Inventors: Yoshihiro Ohta, Yoichi Ishizaki, Yui Asano
  • Polyester surfactants for deinking
    Patent number: 9404216
    Abstract: A polyester surfactant includes a condensation esterification product of a) a polyhydric alcohol, b) a dimer or trimer of an C2 to C42 acid, and c) polyethylene glycol and polypropylene glycol. The polyhydric alcohol is selected from glycerol, arabitol, sorbitol, sorbitan, mannitol, mannitan, erythritol, pentaerythritol, or mixtures thereof. The polyester surfactant is used for deinking, for example, printed waste paper. A method for deinking includes a step of contacting an aqueous pulp slurry with the addition of a composition comprising a polyester surfactant.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: August 2, 2016
    Assignee: KEMIRA CHEMICALS, INC.
    Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
  • Polylactic acid block copolymers and preparation methods thereof
    Patent number: 9365672
    Abstract: A polylactic acid triblock copolymer and a preparation method thereof are described. The polylactic acid triblock copolymer comprises an aromatic polyester oligomer block and a polylactic acid block. The polylactic acid triblock copolymer is obtained by reacting an aromatic polyester oligomer with a monomer lactide at a desired temperature. The polylactic acid block copolymer has a regular structure indicated by peak melting temperatures (Tm) corresponding to the aromatic polyester oligomer block and the polylactic acid block, respectively. Examples of the aromatic polyester oligomer block include polyethylene terephthalate, polybutylene terephthalate, and polyethylene 1,4-naphthalate. Examples of the monomer lactide include L-lactide and D-lactide.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: June 14, 2016
    Assignee: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences
    Inventors: Jian Zhou, Peng Chen, Qun Gu, Jun Li, Wentao Shi, Zongbao Wang, Zhiqiang Jiang, Xuedong Wu
  • Process for preparing hyperbranched polyesters
    Patent number: 9334361
    Abstract: Process for preparing hyperbranched polyesters at atmospheric pressure by reacting polyols with polycarboxylic acid in the presence of a heterogeneous, reusable, acid, crystalline, micro-mesoporous double-metal cyanide catalyst Zn3M2(CN)n(ROH).xZnCl2.yH2O at moderate temperatures for a short period of reaction time. Examples of a polyol include glycerol, sorbitol, mannitol, glucose and sucrose. Examples of a polycarboxylic acid include succinic acid and adipic acid. The hyper-branched polyester produced has a high degree of branching (56-90%), a low viscosity (inherent viscosity 0.02-0.1 dL/g), and a controlled gelation.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 10, 2016
    Assignee: Council of Scientific & Industrial Research
    Inventors: Darbha Srinivas, Joby Sebastian
  • Method for preparing a polyester resin
    Patent number: 9328195
    Abstract: Disclosed is a method for preparing a polyester resin, wherein phosphate additives are used in preparing polyester resin to improve the reactive property of the esterification reaction or transesterification, as well as the flame retardancy property and the color stability of a polyester resin. The method for preparing a polyester resin comprises the steps of: carrying out an esterification reaction and/or an ester exchange reaction of a diacid component and a diol component in a presence of phosphoric acid derivatives, wherein the diol component comprises a primary diol and isosorbide, and wherein a reaction time of the esterification reaction or the ester exchange reaction is reduced and the remaining rate of isosorbide in the main chain of the polyester resin is increased.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: May 3, 2016
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Kyu-Tae Park, Yoo-Jin Lee, Jong-Ryang Kim, Sin-Young Hwang
  • Use of hyperbranched polyesters and/or polyester amides for separating oil-in-water emulsions
    Patent number: 9303215
    Abstract: The use of a nondendrimeric hyperbranched polyester and/or a polyesteramide which comprise alkenyl-substituted succinic acid units as a demulsifier for splitting oil-water emulsions. The succinic acid is substituted by at least one alkenyl group containing from 16 to 20 carbon atoms. Particular emulsions suitable for splitting are crude oil emulsions. Also, a nondendrimeric hyperbranched polyester or a polyesteramide which comprises alkenyl-substituted succinic acid units, the alkenyl group having from 16 to 20 carbon atoms. In addition to the alkenyl-substituted succinic acid units, the nondendrimeric hyperbranched polyester contains, as further units, at least trifunctional alcohols having been alkoxylated with an average of from 3 to 12 ethylene oxide units.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: April 5, 2016
    Assignee: BASF SE
    Inventors: Bernd Bruchmann, Andreas Eichhorn, Marcus Guzmann, Wolfgang Gaschler
  • Use of hyperbranched polyesters and/or polyester amides for separating oil-in-water emulsions
    Patent number: 9296957
    Abstract: A nondendrimeric hyperbranched polyester and/or polyesteramide which comprise alkenyl-substituted succinic acid units as demulsifiers for splitting oil-water emulsions, especially crude oil emulsions. In particular, the succinic acid is substituted with alkenyl groups containing 16 to 20 carbon atoms. Also, nondendrimeric hyperbranched polyesters or polyesteramides which comprise alkenyl-substituted succinic acid units, wherein the alkenyl group has from 16 to 20 carbon atoms. In addition to the alkenyl-substituted succinic acid units, the nondendrimeric hyperbranched polyester contains, as further units, at least trifunctional alcohols having been alkoxylated with an average of from 3 to 12 ethylene oxide units.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: March 29, 2016
    Assignee: BASF SE
    Inventors: Bernd Bruchmann, Andreas Eichhorn, Marcus Guzmann, Wolfgang Gaschler
  • Solid-phase polymerization method for preparing high-molecular-weight aliphatic polyester
    Patent number: 9290616
    Abstract: A solid-phase polymerization method of high-molecular-weight aliphatic polyester conducts the solid-phase polymerization of aliphatic polyester prepolymer under a gas stream containing sulfonic acid catalyst. The method features preparing metal free aliphatic polyester with high molecular weight, good color and luster and perfect thermal stability efficiently. The non-metal-ion aliphatic polyester is not only applicable to common use, but is also suitable as high value-added medical material and packing material which contacts with food directly than other metal-containing polyester.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: March 22, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Yong He, Pujing Zuo, Zinong Ye, Masatoshi Aoyama, Xin Zeng, Xiangqun Fan, Xiaji Dai, Jing Lu
  • Polyester resin and optical lens
    Patent number: 9234986
    Abstract: A polyester resin having a diol unit containing a unit derived from ethylene glycol and a unit derived from a diol represented by the following formula (I), and a dicarboxylic acid unit containing a unit derived from an aromatic dicarboxylic acid in an amount of 50 mol % or more; wherein the entire diol unit contains the unit derived from ethylene glycol in an amount of 40 to 99 mol %, and the unit derived from a diol represented by formula (I) in an amount of 1 to 60 mol %: wherein A represents an aromatic ring selected from the group consisting of benzene, naphthalene, anthracene, phenanthrene and pyrene; R1 represents a C1 to C12 alkyl group, a substituted or unsubstituted C6 to C12 aryl group or a halogen atom; n represents an integer of 0 to 4; and when plural R1 are present, R1 may be the same as or different from each other.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: January 12, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Takuya Minezaki, Takeshi Hirokane, Dai Oguro
  • Aliphatic polyester
    Patent number: 9234073
    Abstract: A method of producing a molded article involving preparing a copolymer obtained by condensation of (i) 90 to 99.5 mol %, based on components i) to ii), of succinic acid; (ii) 0.5 to 10 mol %, based on components i) to ii), of 4 to 10 mol % sebacic acid; (iii) 98 to 102 mol %, based on components i) to ii), of 1,3-propanediol or 1,4-butanediol; (iv) 0.05 to 0.5% by weight, based on the total weight of components i) to iii), of a crosslinker; and (v) 0.35 to 2% by weight, based on the total weight of components i) to iii), of 1,6-hexamethylene diisocyanate. The copolymer is injection molded or blow molded to form a molded article having a wall thickness above 200 ?m.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: January 12, 2016
    Assignee: BASF SE
    Inventors: Kai Oliver Siegenthaler, Andreas Füβl, Gabriel Skupin, Motonori Yamamoto
  • Polymeric materials
    Patent number: 9212257
    Abstract: A polymer comprising as part of its polymer backbone a cineole-type moiety having a structure according to Formula (II): where one of R6 to R10 represents A-O— and one of R6 to R10 represents —O—B and the remainder of R6 to R10 represent H, where A and B, which may be the same or different, represent the remainder of the polymer backbone and are independently selected from the group consisting of polyurethane, polyester, polyamide, polycarbonate, polyimide, polyether, polyepoxy, polyacrylate, polysiloxane, polyvinyl and combinations thereof. The polymer comprising as part of its polymer backbone a moiety of Formula (II) or polymer blend, comprising this polymer, can be used for production of a sheet, fiber or film.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: December 15, 2015
    Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    Inventors: Florian Hans Maximilian Graichen, Benjamin Aldo Leita, Michael Shane O'Shea
  • Polyester compositions which comprise cyclobutanediol having certain cis/trans ratios
    Patent number: 9181387
    Abstract: Described are polyester compositions comprising (a) a dicarboxylic acid component comprising 80 to 100 mole % terephthalic acid residues; optionally, aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; 30 to 40 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, where said 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues comprise at least 55 mole % cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol; and 60 to 70 mole % 1,4-cyclohexanedimethanol residues.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 10, 2015
    Assignee: Eastman Chemical Company
    Inventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
  • Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and high glass transition temperature and articles made therefrom
    Patent number: 9181388
    Abstract: Described are polyester compositions comprising at least one polyester which comprises terephthalic acid residues, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and 1,4-cyclohexanedimethanol, wherein the inherent viscosity and the Tg of the polyester provides for certain polyester properties. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: November 10, 2015
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Emmett Dudley Crawford, Thomas Joseph Pecorini, Douglas Stephens McWilliams, David Scott Porter, Gary Wayne Connell
  • Polyester with excellent thermostability and manufacturing method therefor
    Patent number: 9175133
    Abstract: A polyester has excellent thermostability with only a small reduction in intrinsic viscosity during melt molding. The polyester is obtained from a dicarboxylic acid, and/or an ester-forming derivative thereof, and an ethylene glycol, a catalyst selected from the group consisting of a titanium compound, aluminum compound and antimony compound, a phosphorous compound selected from the group consisting of phosphoric acid, trimethyl phosphate, ethyl diethylphosphonoacetate, 3,9-bis(2,6-di-t-butyl-4-methylphenoxy) -2,4,8, 10-tetraoxa-3,9-diphosphaspiro[5,5]undecane and tetrakis(2,4-di-t-butyl-5-methylphenyl) [1,1-biphenyl]-4,4?-diylbisphosphonite, wherein the polyester contains 15 to 203 ppm of a sum of copolymerized 1,2-propanediol and/or uncopolymerized 1,2-propanediol wherein ethylene glycol is obtained from biomass and has content of 1,2-propanediol of 45 to 1000 ppm.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 3, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Takuro Okubo, Youichiro Tanaka, Kunihiro Morimoto
  • Containers comprising polyester compositions which comprise cyclobutanediol
    Patent number: 9175134
    Abstract: Described are bottles(s) comprising at least one polyester composition comprising at least one polyester which comprises terephthalic acid residues; 30 to 40 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 60 to 70 mole % of 1,4-cyclohexanedimethanol residues, wherein the inherent viscosity of said polyester is from 0.50 to 0.68 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ?-inch thick bar; wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.; and wherein said polyester composition contains no polycarbonate.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 3, 2015
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Emmett Dudley Crawford, Thomas Joseph Pecorini, David Scott Porter, Gary Wayne Connell, Michael James Keegan
  • Copolymerized polyester heat shrinkable film
    Patent number: 9169365
    Abstract: A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide 1,4-cyclohexanedimethanol and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: October 27, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Roy Lee, Jong-Ryang Kim, Won-Jae Yoon