Material Contains A Group Iib Metal Atom (zn, Cd, Hg) Patents (Class 528/281)
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Patent number: 10377863Abstract: A method of manufacturing polyimide particles includes combining a polyimide solution including a polyimide and an organic solvent with an aqueous solution including water in the presence of an emulsifying surfactant at a shear rate from 1,000 to 3,000 revolutions per minute to form an emulsion. The method further includes removing the organic solvent to form an aqueous polymer dispersion including polyimide particles, and recovering the polyimide particles. The polyimide particles have a spherical morphology and a volume based D10 diameter from 3 to 50 micrometers, a volume based D90 diameter from 3 to 80 micrometers, and a volume based D100 diameter from 3 to 100 micrometers.Type: GrantFiled: June 29, 2016Date of Patent: August 13, 2019Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Viswanathan Kalyanaraman, Hareesh Shamrao Deshpande, Ekrem Mehmet Morali
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Patent number: 10266645Abstract: The present invention provides a copolymerized polyester resin which can produce an adhesive resin having an excellent color tone and an excellent durability when used for an adhesive to be applied to various uses. A copolymerized polyester resin, comprising, as constituting ingredients, a dicarboxylic acid ingredient containing 75 molar % or less of terephthalic acid and a diol ingredient containing two or more kinds of diols, characterized in that the copolymerized polyester resin satisfies the following (1) and (2): (1) A decrease in a reduced viscosity after the copolymerized polyester resin is subjected to a heat treatment in a nitrogen atmosphere at 275° C. for 2 hours is 0.20 dl/g or less; and (2) A color b value is 5 or less.Type: GrantFiled: February 3, 2016Date of Patent: April 23, 2019Assignee: TOYOBO CO., LTD.Inventors: Hideto Ohashi, Hideki Shimizu
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Publication number: 20150148515Abstract: There is provided a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.Type: ApplicationFiled: May 21, 2013Publication date: May 28, 2015Inventors: Ji-Hyun Kim, Yoo Jin Lee
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Publication number: 20150148516Abstract: The present invention discloses new catalyst systems based on complexes of divalent metals supported by chelating phenoxy ligands for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates.Type: ApplicationFiled: November 25, 2014Publication date: May 28, 2015Inventors: Jean-Francois Carpentier, Yann Sarazin, Valentin Poirier, Marion Helou
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Publication number: 20150141612Abstract: The present invention provides a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including isosorbide, a cyclohexanedimethanol, and the balance of other diol compounds. The polyester resin contains a zinc-based catalyst and a phosphorus-based stabilizer. The present invention also provides a method for preparing the polyester resin. The method includes: esterifying diol components including isosorbide, a cyclohexanedimethanol, and the balance of other diol compounds, with dicarboxylic acid components including terephthalic acid in the presence of an esterification reaction catalyst including a zinc compound; adding a phosphorus-based stabilizer to the esterification reaction mixture at the time when the degree of esterification reaches at least 80%; and subjecting the esterification reaction product to polycondensation.Type: ApplicationFiled: May 21, 2013Publication date: May 21, 2015Inventors: Yoo Jin Lee, Ji-Hyun Kim, Jong Ryang Kim
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Patent number: 8921509Abstract: Provided is a composition with partially aromatic polyester polymers having an It.V. of at least 0.50 dL/g, produced in an ester exchange melt phase process, having from zero or greater than zero to less than 5 ppm titanium, from zero or greater than zero to less then 10 ppm germanium, and from zero or greater than zero to less than 20 ppm manganese.Type: GrantFiled: June 18, 2012Date of Patent: December 30, 2014Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Zhufang Liu, Jeff Scott Howell
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Publication number: 20140364580Abstract: The invention provides a metal alkoxide complex of Formula (I), wherein X, M, R1, R2, R3, m, n, y and z are as defined in the Description. The invention also provides a catalyst composition comprising the metal alkoxide complex and a hydroxy-containing compound, wherein the molar ratio of the metal alkoxide complex to the hydroxy-containing compound is 1:01-1000. The invention also provides a production method of poly-?- caprolactone or polyactide, wherein an ?-caprolactone monomer or a lactide monomer is reacted in the presence of the metal alkoxide complex or catalyst composition to obtain poly-?-caprolactone or polylactide. The metal alkoxide complex and the catalyst composition thereof can be used to catalyze the synthesis of poly-?- caprolactone or polylactide with a high efficiency.Type: ApplicationFiled: September 11, 2012Publication date: December 11, 2014Applicant: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Dongmei Cui, Xinli Liu, Bo Liu, Shihui Li, Dongtao Liu, Chunji Wu
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Patent number: 8901271Abstract: The invention relates to a process for making polyethylene terephthalate (PET) from ethylene glycol (EG), purified terephthalic acid (PTA) and optionally up to 6 mol % comonomer, using a mixed metal catalyst system and comprising the steps of a) esterifying EG and PTA to form diethyleneglycol terephthalate and oligomers (DGT), and b) melt-phase polycondensing DGT to form PET and EG, wherein the catalyst system substantially consists of 70-160 ppm of Sb-compound, 20-70 ppm of Zn-compound, and 0.5-20 ppm of Ti-glycolate as active components (ppm metal based on PET). With this process that applies reduced amount of metal catalyst components PET can be obtained with high productivity, which polyester shows favorable color and optical clarity, also if recycling of EG is applied within the process.Type: GrantFiled: August 17, 2010Date of Patent: December 2, 2014Assignee: Saudi Basic Industries CorporationInventors: Munif Al-Munif, Mummaneni Venkateswara Rao, Zahir Bashir, Suresh Padmanabhan
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Publication number: 20140323683Abstract: A process for manufacturing defined functional lactic acid oligomers can include contacting lactide with at least one compound that is a transfer agent. Oligomers can be prepared according to the process.Type: ApplicationFiled: December 14, 2012Publication date: October 30, 2014Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Martine Slawinski, Marion Helou, Jeroen Wassenaar
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Patent number: 8859713Abstract: The invention relates to a process for making polyethylene terephthalate (PET) from ethylene glycol (EG), purified terephthalic acid (PTA) and optionally up to 30 mol % comonomer, using a catalyst system essentially consisting of antimony—(Sb), zinc—(Zn) and phosphorous—(P) compounds, comprising the steps of a) esterifying EG and PTA to form diethyleneglycol terephthalate and oligomers (DGT), and b) melt-phase polycondensing DGT to form polyester and EG1 wherein the Sb- and P-compounds are added in step a) and the Zn-compound is added after step a). With this process PET can be obtained that shows favorable color and optical clarity, also if recycling of EG is applied in the process, and a relatively low rate of acetaldehyde regeneration during melt-processing.Type: GrantFiled: March 10, 2010Date of Patent: October 14, 2014Assignee: Saudi Basic Industries CorporationInventors: Mummaneni Venkateswara Rao, Munif Al-Munif, Zahir Bashir
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Publication number: 20140228535Abstract: A method can include immortal ring-opening homopolymerisation of cyclic carbonates or cyclic esters in the presence of a catalytic system, or sequential two-step ring-opening block copolymerisation of one or more cyclic monomers selected from cyclic carbonates or cyclic esters in the presence of the catalytic system. The catalytic system can include a phenolate supported metallic complex. The catalytic system can also include an alcohol or a primary amine containing aliphatic and/or aromatic moieties. The alcohol or primary amine can be present in a molar ratio with respect to the metallic complex that is larger than 1.Type: ApplicationFiled: August 31, 2012Publication date: August 14, 2014Inventors: Valentin Poirier, Jean-François Carpentier, Martine Slawinski, Yann Sarazin, Marion Helou
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Patent number: 8697832Abstract: The invention relates to a process for preparing lactic acid polymers of highly crystallinity and molecular weight, the process comprising melt polymerization of a lactide to form prepolymers having active end groups followed by solid state polymerization. The polymerization is carried out in the presence of a catalyst complex comprising a lactide, an organic metal-oxo compound and a lactic acid oligomer. The residual lactide after the melt polymerization is removed by heating the reaction mixture in the temperature range of 98° C. to a temperature less than the melting point of the prepolymer. The metal to oligomer ratio in the catalyst complex is in the range of 0.1 to 10, preferably in the range of 0.5 to 5, more preferably in the range of 0.8 to 1.5.Type: GrantFiled: April 4, 2008Date of Patent: April 15, 2014Assignee: Indian Institute of Technology, BombayInventors: Hemant Nanavati, Vimal Katiyar
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Patent number: 8530609Abstract: A process for removing metal species from a composition comprising contacting: a. an oligomer mixture stream comprising the monomers of a partially aromatic polyester polymer and at least one metal species, or b. a molten polyester polymer stream comprising partially aromatic polyester polymers and at least one metal species, with a non-catalytic porous material in the presence of hydrogen to produce a treated stream containing a reduced amount of at least one metal species. There are provided compositions comprising a partially aromatic polyester polymer having an It.V. of at least 0.50 produced in a direct esterification melt phase process, from greater than 0 to less than 50 ppm antimony, and less than 40 ppm cobalt, or produced in an ester exchange melt phase process, having from greater than zero to less than 5 ppm titanium and less than 10 ppm manganese.Type: GrantFiled: April 17, 2008Date of Patent: September 10, 2013Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Zhufang Liu, Jeff Scott Howell
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Publication number: 20130158227Abstract: This invention relates to a process of preparing a catalyst for the production of polyethylene terephthalate and for the production of high molecular weight PET comprising: a) reacting boric acid and a zinc salt in a solvent comprising at least one glycol selected from ethylene glycol, propylene glycol, and butylene glycol thereby forming a precipitate; and b) isolating the precipitate. In addition, the use of the catalyst for the production of polyethylene terephthalate and for the production of high molecular weight PET is disclosed.Type: ApplicationFiled: December 17, 2012Publication date: June 20, 2013Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventor: SAUDI BASIC INDUSTRIES CORPORATION
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Publication number: 20130144027Abstract: The present invention discloses a method for preparing polycarbonate-urethane) or poly(ester-urethane) without isocyanateType: ApplicationFiled: June 21, 2011Publication date: June 6, 2013Applicants: CENTER NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Sophie Guillaume, Marion Helou, Jean-François Carpentier, Martine Slawinski
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Publication number: 20130018165Abstract: A method is disclosed herein for the preparation of polytrimethylene terephthalate with sustained-release crystallinity. The method reduces crystallization rate and crystallinity-saturation ratio of polytrimethylene terephthalate during spinning, through addition of a third monomer during the esterification reaction step. The third monomer acts as copolymerization component generating intermolecular steric hindrance; the identity of which selects from one or more as combinations of the following: trimellitic anhydride, non-para aromatic dicarboxylic acid, C4-C10 aliphatic dicarboxylic acid having branched chains or naphthenic group and C3-C10 aliphatic dihydric alcohol having branched chains or naphthenic group, the molar ratio of carboxyl to hydroxyl is 1:1.16˜1.85, with the third monomer constituting 0.5˜6.5% of the total weight of the beginning raw materials.Type: ApplicationFiled: February 23, 2011Publication date: January 17, 2013Inventor: Shuchang Bian
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Patent number: 8163841Abstract: Polyethylene naphthalate fibers that are characterized in that the fibers have a crystal volume of from 550 to 1,200 nm3 obtained by wide angle X-ray diffraction of the fiber and a degree of crystallization of from 30 to 60%. It is preferred that the fibers have a maximum peak diffraction angle of wide angle X-ray diffraction of from 25.5 to 27.0° and a melting point of from 285 to 315° C. The production method thereof is characterized in that a particular phosphorus compound is added to the polymer in a molten state, the spinning draft ratio after discharging from the spinneret is from 100 to 5,000, and the molten polymer immediately after discharging from the spinneret is allowed to pass through a heat-retaining spinning chimney at a temperature within ±50° C. of a temperature of the molten polymer, and is drawn.Type: GrantFiled: March 4, 2009Date of Patent: April 24, 2012Assignee: Teijin Fibers LimitedInventors: Shintaro Shimada, Fuyuki Terasaka
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Patent number: 8158718Abstract: Polyethylene naphthalate fibers that are characterized in that the fibers have a crystal volume of from 100 to 200 nm3 obtained by wide angle X-ray diffraction of the fiber and a degree of crystallization of from 30 to 60%. It is preferred that the fibers have a maximum peak diffraction angle of wide angle X-ray diffraction of from 23.0 to 25.0°. The production method thereof is characterized in that a particular phosphorus compound is added to the polymer in a molten state, the spinning speed is from 4,000 to 8,000 m/min, and the molten polymer immediately after discharging from the spinneret is allowed to pass through a heated spinning chimney at a high temperature exceeding a temperature of the molten polymer by 50° C. or more, and is drawn.Type: GrantFiled: March 4, 2009Date of Patent: April 17, 2012Assignee: Teijin Fibers LimitedInventors: Shintaro Shimada, Fuyuki Terasaka
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Publication number: 20120071625Abstract: The invention relates to a process for making polyethylene terephthalate (PET) from ethylene glycol (EG), purified terephthalic acid (PTA) and optionally up to 30 mol % comonomer, using a catalyst system essentially consisting of antimony—(Sb), zinc—(Zn) and phosphorous—(P) compounds, comprising the steps of a) esterifying EG and PTA to form diethyleneglycol terephthalate and oligomers (DGT), and b) melt-phase polycondensing DGT to form polyester and EG1 wherein the Sb- and P-compounds are added in step a) and the Zn-compound is added after step a). With this process PET can be obtained that shows favourable colour and optical clarity, also if recycling of EG is applied in the process, and a relatively low rate of acetaldehyde re-generation during melt-processing.Type: ApplicationFiled: March 10, 2010Publication date: March 22, 2012Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Mummaneni Venkateswara Rao, Munif Al-Munif, Zahir Bashir
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Publication number: 20100249363Abstract: The present invention relates to a process for preparing polyethylene naphthalate, comprising the steps of: esterifying 2,6-naphthalene dicarboxylic acid and ethylene glycol, or glycols using the two materials as major material to obtain prepolymer which comprises bis(beta-hydroxyethyl)naphthalate or low polymer as main material; and performing polycondensation reaction to thereby prepare polyethylene naphthalate. The process of the present invention has advantages of: enabling esterification with a low molar ratio of ethylene glycol to reduce reaction time, thereby increasing process efficiency; minimizing formation of side reaction products to improve properties; and preventing deterioration of the products by performing polycondensation at a low temperature to thereby obtain polyethylene naphthalate polymers of high quality.Type: ApplicationFiled: October 30, 2008Publication date: September 30, 2010Applicant: HYOSUNG CORPORATIONInventors: Hyun-Soo Kim, Young-Gyo Choi, Woo-Sung Kim, Byung-Jun Song
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Patent number: 7709593Abstract: Processes for feeding catalyst systems to a melt phase process for the manufacture of polyester polymers, and more particularly, to split catalyst solution feeds to the melt phase process to provide the target amount and ratio of catalyst metals.Type: GrantFiled: March 7, 2007Date of Patent: May 4, 2010Assignee: Eastman Chemical CompanyInventor: Jason Christopher Jenkins
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Publication number: 20100105859Abstract: The invention relates to a process for preparing lactic acid polymers of highly crystallinity and molecular weight, the process comprising melt polymerization of a lactide to form prepolymers having active end groups followed by solid state polymerization. The polymerization is carried out in the presence of a catalyst complex comprising a lactide, an organic metal-oxo compound and a lactic acid oligomer. The residual lactide after the melt polymerization is removed by heating the reaction mixture in the temperature range of 98° C. to a temperature less than the melting point of the prepolymer. The metal to oligomer ratio in the catalyst complex is in the range of 0.1 to 10, preferably in the range of 0.5 to 5, more preferably in the range of 0.8 to 1.Type: ApplicationFiled: April 4, 2008Publication date: April 29, 2010Inventors: Hemant Nanavati, Vimal Katiyar
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Patent number: 7678875Abstract: A method for producing a PC copolymer with improved productivity is provided. The PC copolymer has a specific structure and the method uses a diester diol-containing monomer as a raw material. The polycarbonate copolymer is produced by reacting a diester diol-containing monomer, a divalent phenol, and a carbonate precursor by interfacial polymerization, wherein the diester diol-containing monomer is a product of reaction between a hydroxybenzoic acid or an esterified product thereof and a polyalkylene glycol, wherein the esterification degree of hydroxyl groups of the polyalkylene glycol is 50 to 90 mol %.Type: GrantFiled: June 30, 2005Date of Patent: March 16, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Koichi Suga, Yasuhiro Ishikawa
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Patent number: 7655746Abstract: Polyesters whose polycondensation is catalyzed by titanium-containing catalysts and which are susceptible to acetaldehyde formation during polycondensation or subsequent molding operations are prepared with low finished acetaldehyde content and reduced acetaldehyde generation by adding an ammonium or amine salt of an oxyphosphorus-acid. Polyesters, especially polyethylene terephthalate, may be produced with high inherent viscosity in reduced processing time, without the necessity of further polymerization in the solid state.Type: GrantFiled: September 16, 2005Date of Patent: February 2, 2010Assignee: Eastman Chemical CompanyInventor: Mary Therese Jernigan
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Publication number: 20090281230Abstract: The invention pertains to low profile additives (“LPA”) comprising branched polymers having a weight average molecular weight (Mw) of at least about 20,000 grams/mole and a number average molecular weight (Mn) of at least about 3,000 grams/mole and methods for making the LPAs. The invention further concerns compositions comprising LPAs synthesized from one or more difunctional monomers and one or more branching agents. Also, disclosed are thermosettable resinous compositions and molded articles comprising the LPAs.Type: ApplicationFiled: May 9, 2008Publication date: November 12, 2009Applicant: Ashland Licensing and Intellectual Property LLCInventors: Husam A.A. Rasoul, Dejan D. Andjelkovic, Dennis H. Fisher
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Patent number: 7608652Abstract: The present invention relates to a catalyst composition for producing polyethylene terephthalate from terephthalic acid and ethylene glycol, comprising: (i) an antimony compound, being present such that the elemental antimony is in a range of about 15 ppm to less than 150 ppm; (ii) a zinc compound, being present such that the elemental zinc is in a range of about 40 to about 160 ppm; as well as a process for the preparation thereof.Type: GrantFiled: February 10, 2005Date of Patent: October 27, 2009Assignee: Saudi Basic Industries CorporationInventors: Zahir Bashir, Jamil Siddiqui, Venkatanathan Sampath, Khalid Al-Luhaidan
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Method for incorporating nitrogen containing methine light absorbers in PET and compositions thereof
Patent number: 7528219Abstract: The present invention is a method for efficiently incorporating a nitrogen containing methine light absorber into a polyester resin. The method includes forming a reaction mixture comprising combining a diol component, a diacid component selected from the group consisting of dicarboxylic acids, dicarboxylic acid derivatives, and mixtures thereof, an antimony containing compound, a phosphorus containing compound, a metal containing compound, and a nitrogen containing methine light absorber. The reaction mixture is polymerized in a polycondensation reaction system. In another embodiment the light absorber is added while the reaction products of one reactor are being transferred to the next reactor in the polycondensation reaction system. The present invention is also directed articles made from the polyester resin.Type: GrantFiled: September 21, 2007Date of Patent: May 5, 2009Assignee: Eastman Chemical CompanyInventors: Max Allen Weaver, Jason Clay Pearson, Dale Milton Blakely, Frederick Leslie Colhoun -
Publication number: 20080246192Abstract: A polyester composition comprising a reaction product of: 65-94.5 weight percent of a polyester having a weight average molecular weight of greater than or equal to 70,000 g/mol, of the formula wherein each T is a C6-10 aromatic group derived from a dicarboxylic acid and D is a C2-4 aliphatic group derived from a dihydroxy compound; 5-30 weight percent of an impact modifier copolymer comprising units derived from a C2-20 olefin and units derived from a glycidyl(meth)acrylate; and 0.5-5 weight percent of a particulate fluoropolymer encapsulated by a copolymer having a Tg of greater 10° C. and comprising units derived from a monovinyl aromatic monomer and units derived from a C3-6 monovinylic monomer; and wherein the composition has less than 70 weight percent of a polyester derived from a dicarboxylic acid and an aliphatic diol selected from the group consisting of 1,3-propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, cyclohexanediol, and 1,4-cyclohexanedimethanol.Type: ApplicationFiled: April 6, 2007Publication date: October 9, 2008Inventors: Sung Dug Kim, Subir Debnath
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Patent number: 7332562Abstract: The present invention relates to a biodegradable copolyester of high molecular weight and narrow molecular weight distribution. The copolyester has a Mw of 100,000-600,000 g/mol, and a molecular weight distribution of 1.2-3.Type: GrantFiled: December 21, 2005Date of Patent: February 19, 2008Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical IndustryInventors: Wei Chen, Guixiang Zhu, Xirong Chen, Jinglan Lu, Yanxia Zhang, Yifan Yan, Wei Zhang
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Publication number: 20080033084Abstract: The present invention relates to a catalyst composition for producing polyethylene terephthalate from terephthalic acid and ethylene glycol, comprising: (i) an antimony compound, being present such that the elemental antimony is in a range of about 15 ppm to less than 150 ppm; (ii) a zinc compound, being present such that the elemental zinc is in a range of about 40 to about 160 ppm; as well as a process for the preparation thereof.Type: ApplicationFiled: February 10, 2005Publication date: February 7, 2008Inventors: Zahir Bashir, Jamil Siddiqui, Venkatanathan Sampath, Khalid AL- Luhaidan
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Method for incorporating nitrogen containing methine light absorbers in pet and compositions thereof
Patent number: 7282555Abstract: The present invention is a method for efficiently incorporating a nitrogen containing methine light absorber into a polyester resin. The method includes forming a reaction mixture comprising combining a diol component, a diacid component selected from the group consisting of dicarboxylic acids, dicarboxylic acid derivatives, and mixtures thereof, an antimony containing compound, a phosphorus containing compound, a metal containing compound, and a nitrogen containing methine light absorber. The reaction mixture is polymerized in a polycondensation reaction system. In another embodiment the light absorber is added while the reaction products of one reactor are being transferred to the next reactor in the polycondensation reaction system. The present invention is also directed articles made from the polyester resin.Type: GrantFiled: May 27, 2004Date of Patent: October 16, 2007Assignee: Eastman Chemical CompanyInventors: Max Allen Weaver, Jason Clay Pearson, Dale Milton Blakely, Frederick Leslie Colhoun -
Patent number: 7241855Abstract: A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a saturated solution with water or another suitable solvent is converted with an aliphatic or cycloaliphatic dial to a dicarboxylic acid alkanediolestercarboxylate and/or its oligomers, which are polycondensed in further process steps to the polyester.Type: GrantFiled: September 27, 2005Date of Patent: July 10, 2007Assignee: Zimmer AktiengesellschaftInventors: Stefan Deiss, Michael Reisen, Karl-Heinz Heldmann, Eckhard Seidel
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Patent number: 7129301Abstract: A method for preparing a biodegradable copolyester includes: (a) optionally preparing an aromatic prepolymer by reacting a first aromatic dicarboxylic compound with a first aliphatic glycol; (b) reacting the aromatic prepolymer with a second aromatic dicarboxylic compound and a second aliphatic glycol so as to form a first reaction product; (c) reacting the first reaction product with an aliphatic dicarboxylic compound so as to form a second reaction product; and (d) performing polycondensation of the second reaction product.Type: GrantFiled: April 28, 2005Date of Patent: October 31, 2006Assignee: Far Eastern Textile Ltd.Inventors: Ru-Yu Wu, Chih-Wei Chu, Li-Ling Chang, Yi-Hsuan Tang, Ping-Sheng Lai
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Ytterbium(III) acetylacetonate as a catalyst for the preparation of aliphatic oligocarbonate polyols
Patent number: 7060778Abstract: Ytterbium(III) acetylacetonate is used as a catalyst for the preparation of aliphatic oligocarbonate polyols by transesterification of at least one organic carbonate with at least one aliphatic polyol.Type: GrantFiled: May 10, 2004Date of Patent: June 13, 2006Assignee: Bayer Materialscience AGInventor: Steffen Hofacker -
Patent number: 7049390Abstract: A melt polymerization process for the preparation of poly(1,3-propylene-co-isosorbide) terephthalate (3GIT), new 3GITs and products made from the 3GITs. The process comprises (a) providing a mixture comprising terephthalic acid or its alkyl ester, 1,3-propanediol and isosorbide in a molar ratio of diols to terephthalic acid or its alkyl ester of from about 1.1:1 to about 1.6:1 and a molar ratio of 1,3-propanediol to isosorbide of from about 2:1 to about 10:1; (b) reacting the mixture in an inert atmosphere at a temperature of about 180 to about 245° C., with concurrent removal of a distillate comprising at least 80% of the water or alkanol volatile reaction product, wherein the distillate contains less than about 5 weight % 1,3-propanediol and less than 1 weight % isosorbide; and (c) continuing the reaction in the presence of a polycondensation catalyst at a pressure of about 0.25 to about 2 mm Hg and about 245 to about 260° C.Type: GrantFiled: June 14, 2002Date of Patent: May 23, 2006Assignee: E. I.du Pont de Nemours and CompanyInventors: Douglas J. Adelman, Robin N. Greene, Donald E. Putzig
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Patent number: 7048995Abstract: A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component containing ethylene glycol as the main component in the presence of at least an antimony compound and a phosphorus compound, via an esterification reaction or an ester exchange reaction, which is characterized in that the amount of antimony eluted when immersed in hot water of 95° C. for 60 minutes in the form of particles having a number average particle weight of 24 mg, is not more than 1 ?g per 1 g of the polyester resin, as antimony atoms (Sb).Type: GrantFiled: August 21, 2003Date of Patent: May 23, 2006Assignee: Mitsubishi Chemical CorporationInventors: Yoshihiro Fujimori, Kiyotoshi Fujioka, Masahiro Nukui, Yutaka Yatsugi, Kazuya Nakamichi, Noboru Satou, Toshio Kambe, Hirotsugu Niwa
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Patent number: 7026434Abstract: A composition and a process for producing the composition are disclosed. The composition comprises (1) repeat units derived from a carbonyl compound and a glycol and (2) one or more ultrafine metal oxides. The process can comprise (1) contacting, in the presence of a catalyst and optionally one or more ultrafine metal oxides, a carbonyl compound such as dicarboxylic acid with a glycol under a condition sufficient to produce polyester wherein the glycol can be pretreated with a metal oxide or (2) incorporating an ultrafine metal oxide into or onto polyester. Also disclosed is a process for substantially removing, or reducing the content of, an aldehyde in a glycol which comprises contacting the glycol with at least one metal oxide.Type: GrantFiled: October 15, 2003Date of Patent: April 11, 2006Assignee: E.I. du Pont de Nemours and CompanyInventor: Donald Edward Putzig
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Patent number: 6977282Abstract: A process for making dicyclopentadiene (DCPD)-containing polyesters is disclosed. The process comprises reacting 2-methyl-1,3-propanediol with maleic anhydride to form an acid terminated prepolymer and then reacting the prepolymer with a low grade DCPD to form DCPD-containing polyesters. The reaction of the prepolymer with DCPD is catalyzed by a transition metal triflate catalyst.Type: GrantFiled: August 11, 2004Date of Patent: December 20, 2005Assignee: Lyondell Chemical Technology, L.P.Inventor: Lau S. Yang
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Patent number: 6858701Abstract: A wholly aromatic polyester carbonate having a good color and excellent heat resistant stability. This polymer had an extremely low alkali metal content of 10 ppm or less. This polymer is advantageously produced by reacting an aromatic dicarboxylic acid, aromatic diol and diaryl carbonate in a specific molar ratio in the presence of a pyridine-based compound as a catalyst.Type: GrantFiled: May 31, 2001Date of Patent: February 22, 2005Assignee: Teijin LimitedInventors: Hiroshi Sakurai, Toyoaki Ishiwata, Takanori Miyoshi, Shunichi Matsumura
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Patent number: 6855797Abstract: A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium ?-hydroxycarboxylic acid or its salt, (b) a C1-C6 carboxylic acid, and (c) zinc in the form of a water-soluble zinc salt, and (d) water. Also disclosed is an esterification, transesterification or polycondensation process, which comprises contacting, in the presence of the solution process, an organic acid or its ester or its salt with an alcohol, optionally in the presence of a phosphorus compound, an organic or inorganic toning agent such as cobalt acetate, or combinations thereof.Type: GrantFiled: April 25, 2002Date of Patent: February 15, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Donald Edward Putzig, Edward Francis McBride, Clive Alexander Hamilton, Andrea Clare Smith
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Patent number: 6828410Abstract: Poly(1,4-cyclohexanedicarboxylate)s, especially poly(1,4-cyclohexanedimethylene-1,4-cyclohexanedicarboxylate), are prepared from at least one relatively non-volatile diol, such as 1,4-cyclohexanedimethanol, and cyclohexane-1,4-dicarboxylic acid by an esterification process in the presence of a catalyst, at a maximum temperature of about 260°. In one embodiment the procedure employs a two-step process, the second of which may be performed in the melt or in the solid state. A volatile diol such as ethylene glycol may also be present.Type: GrantFiled: July 10, 2002Date of Patent: December 7, 2004Assignee: General Electric CompanyInventors: Daniel Joseph Brunelle, Corrado Berti, Annamaria Celli, Martino Colonna, Maurizio Fiorini, Elisabetta Marianucci, Massimo Messori, Francesco Pilati, Laura Sisti, Paola Marchese
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Patent number: 6780962Abstract: Described are methacrylate or acrylate binders e.g. obtainable by the steps of (i) generating OH-precursors from at least one aromatic polyester, and (ii) reacting said OH-precursors of step (i) with methacrylic acid and/or acrylic acid to form a respective ester, whereby step (i) comprises reacting an aromatic polyester, or a mixture of aromatic polyesters with at least one polyol and/or at least one aminopolyol to generate hydroxy terminated oligomers. Optionally, a modified product can be obtained by performing a further reaction in step (i), namely by reacting said hydroxy terminated oligomer with at least one polycarboxylic acid and/or at least one polycarboxylic anhydride to generate said hydroxy terminated binder precursor oligomer.Type: GrantFiled: July 31, 2001Date of Patent: August 24, 2004Assignee: Sika Schweiz AGInventors: Dally Moya, Ria De Cooman, Werner Meyer
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Patent number: 6774204Abstract: A composition and a process for producing the composition are disclosed. The composition comprises (1) repeat units derived from a carbonyl compound and a glycol and (2) one or more ultrafine metal oxides. The process can comprise (1) contacting, in the presence of a catalyst and optionally one or more ultrafine metal oxides, a carbonyl compound such as dicarboxylic acid with a glycol under a condition sufficient to produce polyester wherein the glycol can be pretreated with a metal oxide or (2) incorporating an ultrafine metal oxide into or onto polyester. Also disclosed is a process for substantially removing, or reducing the content of, an aldehyde in a glycol which comprises contacting the glycol with at least one metal oxide.Type: GrantFiled: September 25, 2002Date of Patent: August 10, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Donald Edward Putzig
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Patent number: 6706396Abstract: The present invention provides processes for producing certain very low inherent viscosity polyesters. Also provided are the low inherent viscosity polyesters in discrete particulate form, and processes for producing the particulate polyesters. The discrete particulate materials are desirable for use in further processes.Type: GrantFiled: October 18, 2002Date of Patent: March 16, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Allen Hayes, Gregory W. Hoffmann
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Patent number: 6703474Abstract: A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component containing ethylene glycol as the main component in the presence of at least an antimony compound and a phosphorus compound, via an esterification reaction or an ester exchange reaction, which is characterized in that the amount of antimony eluted when immersed in hot water of 95° C. for 60 minutes in the form of particles having a number average particle weight of 24 mg, is not more than 1 &mgr;g per 1 g of the polyester resin, as antimony atoms (Sb).Type: GrantFiled: September 24, 2002Date of Patent: March 9, 2004Assignee: Mitsubishi Chemical CorporationInventors: Yoshihiro Fujimori, Kiyotoshi Fujioka, Masahiro Nukui, Yutaka Yatsugi, Kazuya Nakamichi, Noboru Satou
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Patent number: 6699545Abstract: This invention concerns a method for increasing the polymerization rate of polyester polymers in the solid state by adding a catalytic amount of zinc p-toluenesulfonate to a polyester polymer melt that is essentially free of antimony and germanium, before solid state polymerization.Type: GrantFiled: April 22, 2002Date of Patent: March 2, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Anju Parthasarathy
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Patent number: 6663961Abstract: This invention is related to a process for preparing polyester polymers using a composite catalyst comprises the steps of 1) esterifying naphthalene dicarboxylic acid or a dicarboxylic acids containing NDCA or ester derivatives thereof, with ethylene glycol or glycols containing ethylene glycol or derivatives thereof to produce esterified compounds or its low molecular weight polymers; and then 2) continuously polycondensing the obtained esterification product to produce polyester polymers; and wherein the process includes using a composite polymerization catalyst which was prepared by reacting titanium compounds and cobalt compounds in the solution containing at least one alcohol. The process yields high quality polyester polymers having a good color and excellent physical properties. The process can considerably reduce both the esterification time and the polycondensation time.Type: GrantFiled: June 19, 2001Date of Patent: December 16, 2003Assignees: Oil Corporation, Korea Institute of Science and TechnologyInventors: Hyun Nam Cho, Sang Ho Bae, Il Seok Choi
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Patent number: 6657044Abstract: An improved process for the polymerization of polytrimethylene terephthalate by esterification of terephthalic acid or dimethylterephthalate with 1,3-propanediol (PDO), precondensation of the esterification product to produce a precondensation product, and polycondensation of the precondensation product to produce polytrimethylene terephthalate wherein excess PDO is removed from the esterification and/or polycondensation stages and PDO vapor is separated from the high boiling fraction (solid byproduct). The improvement comprises: (a) heating the solid byproduct in the presence of about 5 ppm to about 5000 ppm, based on metal, of a metal catalyst selected from the group consisting of one or more 3rd, 4th, or 5th row metal compounds from Groups 3-12 and Groups 14-15 of the Periodic Table (IUPAC 1989) at a temperature of from about 100° C. to about 240° C.Type: GrantFiled: October 18, 2002Date of Patent: December 2, 2003Assignee: Shell Oil CompanyInventors: Donald Ross Kelsey, Kathleen Suzanne Kiibler, Wen Tzung Tang
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Patent number: 6657036Abstract: The invention relates to polycondensation resins which are prepared by polycondensation of compounds having a low molecular weight and separation of small molecules in the presence of at least one hetergeneous catalyst. The invention also relates to polyaddition resins which are prepared by polyaddition in the presence of at least one heterogeneous catalyst. The invention further relates to the use of said polycondensation resins and polyaddition resins for the preparation of moulded parts, adhesives and coating materials.Type: GrantFiled: October 4, 2001Date of Patent: December 2, 2003Assignee: BASF Coatings AGInventors: Werner-Alfons Jung, Heinz-Peter Rink, Eberhard Fuchs, Wolfgang Straehle
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Patent number: RE40571Abstract: The present invention provides a catalyst for polyester production capable of producing a polyester with high catalytic activity, a process for producing a polyester using the catalyst and a polyester produced thereby. The catalyst comprises a solid titanium compound obtained by dehydro-drying a hydrolyzate obtained by hydrolysis of a titanium halide and which has a molar ratio (OH/Ti) of a hydroxyl group (OH) to titanium (Ti) exceeding 0.09 and less than 4. In the process, the polyester is obtained by polycondensing an aromatic dicarboxylic acid, or an ester-forming derivative thereof, and an aliphatic diol, or ester-forming derivative thereof, in the presence of the catalyst. The resulting polyester has excellent transparency and tint, a titanium content of 1 to 100 ppm, a magnesium content of 1 to 200 ppm and a magnesium to titanium weight ratio of not less than 0.01.Type: GrantFiled: September 16, 2004Date of Patent: November 11, 2008Assignee: Mitsui Chemicals, Inc.Inventors: Takeshi Ohmatsuzawa, Fujito Ehara, Hideshi Hori, Kazuo Toyota, Kenzaburou Fukutani, Junichi Imuta, Akiyoshi Shimizu, Takayuki Onogi, Seiji Noda, Masayuki Sakai, Shoji Hiraoka, Koji Nakamachi, Michio Tsugawa, Satoru Miyazoe