Polyethylene Terephthalate Per Se Patents (Class 528/308.1)
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Patent number: 11608204Abstract: The invention provides a heat-shrinkable film that has (1) a glass transition temperature (Tg) of 90-140° C.; (2) shrinkage of 12% or less in a main shrinkage direction when treated in glycerin at 80° C. for 10 seconds; (3) shrinkage of 12% or less in a direction orthogonal to the main shrinkage direction when treated in glycerin at 140° C. for 10 seconds; (4) shrinkage of 30%-80% in the main shrinkage direction when treated in glycerin at 140° C. for 10 seconds; (5) a tensile elongation at break of 10% or more both in the main shrinkage direction and the orthogonal direction after aging of 672 hours at 50° C. and 70% RH; and (6) a difference of 5% or less between shrinkage at 140° C. in the main shrinkage direction after aging of 672 hours at 50° C. and 70% RH, and shrinkage at 140° C. in the main shrinkage direction before the aging.Type: GrantFiled: July 24, 2017Date of Patent: March 21, 2023Assignee: TOYOBO CO., LTD.Inventor: Masayuki Haruta
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Patent number: 11059942Abstract: Biosuccinic acid, obtained via sugar fermentation, is cyclodimerized and oxidized to yield building blocks for aromatic polyesters with high glass transition temperatures.Type: GrantFiled: August 21, 2019Date of Patent: July 13, 2021Assignee: University of Florida Research Foundation, IncorporatedInventors: Stephen Albert Miller, Ha Thi Hoang Nguyen, Gabriel Nicholas Short
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Patent number: 10745517Abstract: The present invention relates to a process for continuous production of partly crystalline polycondensate pellet material, comprising the steps of forming a polycondensate melt into pellet material; separating the liquid cooling medium from the pellet material in a first treatment space, wherein the pellets after exit from the first treatment space exhibit a temperature TGR, and crystallizing the pellet material in a second treatment space, wherein in the second treatment space fluidized bed conditions exist, and in the second treatment space the pellets are heated by supply of energy from the exterior by means of a process gas.Type: GrantFiled: February 17, 2017Date of Patent: August 18, 2020Assignee: POLYMETRIX AGInventors: Andreas Christel, Brent Allan Culbert
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Patent number: 10189962Abstract: A heat-shrinkable polyester film comprising ethylene terephthalate as a main component, containing not less than 0 mol % and not more than 5 mol % of a monomer component capable of serving as an amorphous component relative to the total of a polyester resin component, and having a main shrinkage direction in a lengthwise direction, wherein the heat-shrinkable polyester film satisfies heat shrinkage characteristics of the width direction and the lengthwise direction and the molecular orientation angle difference which is a difference between a molecular orientation angle of an edge of one end in the width direction and a molecular orientation angle of an edge of the other end.Type: GrantFiled: January 23, 2015Date of Patent: January 29, 2019Assignee: TOYOBO CO., LTD.Inventors: Masafumi Inoue, Masayuki Haruta
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Patent number: 9617664Abstract: The present invention relates to a polyester fiber that can be applied to a fabric for airbag, particularly, to a polyester fiber having an elongation of 0.4% or less at the stress of 1.0 g/d, an enlongation of 4.0% or less at the stress of 4.0 g/d, and an enlongation of 7.0% or less at the stress of 7.0 g/d, and an initial modulus of 105 to 130 g/d; a method of preparing the same; and a fabric for airbag prepared therefrom. Since the polyester fiber of the present invention decreases stiffness remarkably and secures superior mechanical properties by having a high strength, high elongation, and high shrinkage, it is possible to provide superior packing property, dimensional stability, and air-tight effect, and to protect passengers safely by minimizing the impact applied to the passengers, when it is used for the fabric for airbag.Type: GrantFiled: December 17, 2010Date of Patent: April 11, 2017Assignee: KOLON INDUSTRIES, INC.Inventors: Young-Jo Kim, Ki-Jeong Kim, Sang-Mok Lee, Young-Soo Lee
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Patent number: 9296867Abstract: The invention provides a heat-shrinkable polyester-based film containing ethylene terephthalate as a main constituent component and 0-5 mol % of a monomer component that can be an amorphous component based on all of the polyester resin components. The inventive film has a main shrinkage direction in the longitudinal direction, with heat shrinkage properties in the longitudinal direction and the width direction and a refractive index within specified ranges.Type: GrantFiled: July 19, 2013Date of Patent: March 29, 2016Assignee: Toyobo Co., Ltd.Inventors: Masayuki Haruta, Yukinobu Mukoyama
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Patent number: 9005766Abstract: The invention provides a biaxially-oriented polyester film that comprises a biaxially oriented polyethylene terephthalate film and contains 9000 ppm or less of ethylene terephthalate cyclic trimer, has a molten specific resistance of within 1.0×108?·cm, and at least one surface of the film has a surface resistivity of 13 log ? or less under a relative humidity of 65 %. The invention also provides a wrap-around label for a container produced from the film.Type: GrantFiled: June 1, 2010Date of Patent: April 14, 2015Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideki Ito, Masakazu Iwasaki
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High intrinsic viscosity melt phase polyester polymers with acceptable acetaldehyde generation rates
Patent number: 8987408Abstract: A method for the production of solid polyester polymer particles comprising: a) polycondensing a molten polyester polymer composition in the presence of a polycondensation catalyst composition comprising antimony species; b) continuing the polycondenzation of the molten polyester polymer composition to an It.V. of 0.68 dL/g or more; and c) after reaching an It.V. of 0.68 dL/g or more, adding a catalyst stabilizer or deactivator to the polymer melt; and d) after reaching an It.V. of 0.68 dL/g or more, solidifying the melt into solid polyester polymer particles which do not contain organic acetaldehyde scavengers. In a further embodiment, after solidification of the polyester from the melt phase polycondenzation process: e) the amount of residual acetaldehyde in the particles in the solid state is reduced to a level of 10 ppm or less without increasing the It.V. of the particles by more than 0.03 dL/g.Type: GrantFiled: September 27, 2013Date of Patent: March 24, 2015Assignee: Grupo Petrotemex, S.A. de C.V.Inventor: Mary Therese Jernigan -
Publication number: 20150080547Abstract: The invention provides non-naturally occurring microbial organisms having a (2-hydroxy-3-methyl-4-oxobutoxy) phosphonate (2H3M40P) pathway, p-toluate pathway, and/or terephthalate pathway. The invention additionally provides methods of using such organisms to produce 2H3M40P, p-toluate or terephthalate. Also provided herein are processes for isolating bio-based aromatic carboxylic acid, in particular, p-toluic acid or terephthalic acid, from a culture medium, wherein the processes involve contacting the culture medium with sufficient carbon dioxide (C02) to lower the pH of the culture medium to produce a precipitate comprised of the aromatic carboxylic acid.Type: ApplicationFiled: January 18, 2013Publication date: March 19, 2015Applicant: Genomatica, Inc.Inventors: Robin E. Osterhout, Anthony P. Burgard, Mark J. Burk
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Publication number: 20150064142Abstract: According to some aspects, tissue scaffolds are provided that comprise one or more types of nanofibers. In some embodiments, one or more design features are incorporated into a tissue scaffold (e.g.Type: ApplicationFiled: April 12, 2013Publication date: March 5, 2015Applicant: Harvard Apparatus Regenerative TechnologyInventors: David Green, Ron Sostek
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Patent number: 8968849Abstract: Polyester compositions for use in injection stretch blow molded articles having intrinsic viscosities in the range from about 0.65 to about 0.78 dl/g, and carboxyl end group concentrations of about 47 mmole/kg or more are provided. Stretch blow molded articles formed from these polyester compositions and methods to produce these articles are also described.Type: GrantFiled: January 18, 2011Date of Patent: March 3, 2015Assignee: Invista North America S.a.r.l.Inventor: Geoffrey R. Scantlebury
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Publication number: 20150045462Abstract: Embodiments of the invention provide a process for processing post-consumer polymer. The polymer is contacted with a control medium having a carrier gas and a reactive vapor. Such a process is useful for processing post-consumer polymers with lower energy and reactants than with liquid reactants, and also promotes decontamination of the recycled polymer during the reaction.Type: ApplicationFiled: March 6, 2014Publication date: February 12, 2015Applicant: BEPEX INTERNATIONAL, LLCInventor: Girish M. Bhatt
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Publication number: 20150045530Abstract: A catalyst solution for polyester production includes a titanium compound (A) and an organic solvent (B), wherein particle diameter of particles included in the solution, which is measured by dynamic light scattering method and is subsequently determined by cumulant analysis method, is not greater than 200 nm.Type: ApplicationFiled: May 15, 2012Publication date: February 12, 2015Applicant: Toray Industries, Inc.Inventors: Masataka Makino, Yusuke Tojo, Sadanori Kumazawa
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Patent number: 8945695Abstract: PET resins containing a small amount of a blue dye and/or further containing inorganic particles of Fe3O4 or BaSO4 are synthesized in the presence of an inorganic Ti—Mg catalyst employed as a polycondensation catalyst and a phosphorus stabilizer during a polycondensation process, and the resultant PET resins are free of yellowish appearance and reduced regenerated acetaldehyde and cyclic oligomers after processed so that PET bottle preforms if made of the PET resins can facilitate reduction in aging time thereby to improve the product yield of the bottle preforms and to save the stock space for storing the bottle preforms.Type: GrantFiled: August 8, 2008Date of Patent: February 3, 2015Assignee: Nan Ya Plastics CorporationInventor: Zo-Chun Jen
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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: 20140370551Abstract: This disclosure provides a business method and system for generating sugars and recycling a non-biomass component from a waste stream. In some embodiments, a waste stream comprising cellulose and a non-biomass component is saccharified to produce glucose, followed by recovery of the glucose and non-biomass component, which may be recycled to another site associated with production of a cellulose-containing product that contains the non-biomass component. In certain scenarios, the waste stream is generated at a first location, cellulose pretreatment (if desired) and hydrolysis are conducted at a second location, and the non-biomass component is recycled to the first location or a third location. The non-biomass component may include metals, metal oxides, salts, organic compounds, inorganic compounds, oligomers, or polymers, for example.Type: ApplicationFiled: June 16, 2014Publication date: December 18, 2014Inventors: Theodora RETSINA, Kimberly NELSON
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Patent number: 8871352Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, is a dendritic polymer having one or more oxygen-scavenging groups.Type: GrantFiled: May 31, 2013Date of Patent: October 28, 2014Assignee: Valspar Sourcing, Inc.Inventors: Richard D. Joslin, Jeffrey Niederst, Paul E. Share, Grant Schutte
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Publication number: 20140299246Abstract: The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20g/1000d.Type: ApplicationFiled: November 12, 2013Publication date: October 9, 2014Applicant: KOLON INDUSTRIES, INC.Inventors: Il CHUNG, Ok-Hwa JEON, Gi-Woong KIM
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Publication number: 20140262098Abstract: A paper machine clothing (PMC) fabric includes a plurality of monofilament yarns, at least some of the monofilament yarns having a composition formed of polyethylene terephthalate (PET). The PET monofilament yarns have an abrasion resistance of greater than 6,000 cycles.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: VOITH PATENT GMBHInventors: Brian Good, Vikram Dhende
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Publication number: 20140262099Abstract: A paper machine clothing (PMC) fabric includes a plurality of monofilament yarns, at least some of the monofilament yarns having a composition formed of polyethylene terephthalate (PET). The PET monofilament yarns have an abrasion resistance of greater than 6,000 cycles.Type: ApplicationFiled: July 9, 2013Publication date: September 18, 2014Inventors: Brian Good, Vikram Dhende
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Patent number: 8816041Abstract: Provided are a polyester polymerization catalyst with which the generation of foreign materials caused by the catalyst or mold pollution at the time of molding are reduced and polyesters having remarkably superior thermal stability and color tone can be obtained. Provided is a polyester polymerization catalyst produced by the reaction of a titanium compound and a mannitol in a molar ratio of titanium atom to mannitol of from 1:1 to 1:3. A method for producing a polyester employs the polyester polymerization catalyst.Type: GrantFiled: August 18, 2009Date of Patent: August 26, 2014Assignee: Toray Industries, Inc.Inventors: Yoichiro Tanaka, Eri Hatano, Keisuke Honda
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Publication number: 20140213753Abstract: A process for making a shaped part from a polymer selected from polyethylene terephthalate (PET) and polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) by using a compacting tool comprising a die having a cavity and a punch having an outer surface. The process comprises the steps of: a) placing particles of the polymer in the cavity of the die heated to a compaction temperature, wherein the polymer has an intrinsic viscosity of at least 0.45 dL/g and the particles have an average particle size of 0.5-4000 ?m, b) pressing the particles in the die cavity at a pressure of at least 3 MPa for 5-15 minutes while maintaining the temperature of the die at the compaction temperature and c) removing the shaped part from the die cavity. When the polymer is PET, the compaction temperature is 235-259° C. When the polymer is PEN, the compaction temperature is 250-275° C.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventor: Zahir Bashir
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Patent number: 8791225Abstract: A method for making polyethylene terephthalate resin in which a titanium-nitride polycondensation catalyst is introduced during the initial stages of esterification or transesterification. The titanium-nitride polycondensation catalyst may be added to a mixture containing a terephthalate component and a diol component during the formation of a polyethylene terephthalate precursor. Subsequent polycondensation of the polyethylene terephthalate precursor forms a polyethylene terephthalate polymer.Type: GrantFiled: June 5, 2009Date of Patent: July 29, 2014Assignee: DAK Americas Mississippi Inc.Inventor: Carl Steven Nichols
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Publication number: 20140205784Abstract: A preform suitable for blow molding made out of crystallizable polymers made by biaxially stretching the preform by blowing to form a container. The preform having regular or irregular sequence of variations in molecular pre-alignment/orientation and regular or irregular sequence of variations in crystallinity between different locations of the cross-section of the preform.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: ALLIANCE FOR BUSINESS SOLUTIONS A4BSInventor: Steven DIRCX
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Patent number: 8779082Abstract: The invention relates to an improved linear microdialysis probe comprising a continuous length of flexible tubing (1) having at least one window (4) formed therein, said window covering at least one part of the circumference of the tubing, while the remaining part forms at least one unbroken connection between a first end of said tubing and a second end of said tubing, said ends adapted to be attached to an inlet for perfusion liquid and the other end forming an outlet for the dialysate, said at least one window (4) exposing a tubular semipermeable membrane (2).Type: GrantFiled: December 21, 2006Date of Patent: July 15, 2014Assignee: TORAY Industries, Inc.Inventors: Hua Qi, Keisuke Honda, Kunihiro Morimoto, Jun Sakamoto, Hiroji Kojima
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Patent number: 8771583Abstract: Polyester compositions described herein have properties which are particularly suitable for extrusion blow molding (EBM). These properties relate primarily to the rate of crystallization and melt strength or melt viscosity. Articles prepared from the polyester compositions exhibit good clarity, aesthetics, and other physical properties. The polyester compositions also exhibit broad molecular weight distribution (MWD), resulting in improved processability and melt strength. The crystallization rate allows for good drying characteristics while also enabling the use of regrind. In addition, the compositions exhibit improved recyclability, such as in existing PET recycling streams. In one aspect, articles are prepared in an extrusion blow molding method by combining a dry first polyester copolymer component, a dry second polyester component, and a chain extender to form a feed material suitable for extrusion blow molding.Type: GrantFiled: March 22, 2013Date of Patent: July 8, 2014Assignee: Pepsico, Inc.Inventor: Clarence Sequeira
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Publication number: 20140186606Abstract: Described are methods for producing a sequentially biaxially oriented thermoplastic film having balanced machine direction (MD) and transverse direction (TD) heat shrinkage properties. The methods can include extruding a film, orienting the extruded film in a machine direction, quenching the film, heating the film in an transverse orientation oven and transversely orienting the film, and allowing the film to relax in the machine direction at a machine direction tension lower than a machine direction tension of the film in the transverse orientation oven.Type: ApplicationFiled: December 31, 2013Publication date: July 3, 2014Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Douglas J. BOWER, Robert Thomas ERVOLINO
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Patent number: 8748559Abstract: Polyester compositions, especially polyethylene terephthalate homopolymer and copolymers, are disclosed containing titanium catalysts and catalyst deactivator added late in the manufacturing processing having reduced acetaldehyde generation rates. The polyester compositions are low in free acetaldehyde, making them suitable for fabrication into beverage containers for relatively tasteless beverages such as bottle water. Furthermore, the polyesters are polymerized to a high inherent viscosity in reduced processing time, without the necessity of further polymerization in the solid state, and in the absence of acetaldehyde scavengers leading to polyester polymers having reduced color.Type: GrantFiled: May 10, 2012Date of Patent: June 10, 2014Assignee: Grupo Petrotemex, S.A. de C.V.Inventor: Mary Therese Jernigan
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Patent number: 8748562Abstract: A process for producing higher molecular weight polyester includes heating a polyester to form a melt, and applying and maintaining a vacuum of between about 5 mm and about 85 mm of mercury to the melt while passing bubbles of gas through the melt until molecular weight has increased. The process may involve esterification of a diacid component and a diol component at elevated temperature. After the acid functional groups have essentially reacted, a vacuum of about 5 mm of mercury or less was applied and excess diol stripped off during transesterification, thereby increasing molecular weight.Type: GrantFiled: March 4, 2008Date of Patent: June 10, 2014Assignee: AWI Licensing CompanyInventors: Larry W. Leininger, Dong Tian
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Patent number: 8742058Abstract: A biaxially oriented polyester film has a ratio of Young's modulus in the transverse direction to Young's modulus in the machine direction of 1.5 to 3, an average value of refractive indices in the machine direction, in the transverse direction, and in the thickness direction of 1.590 to 1.680, a minor melting peak temperature of 160 to 190° C., and a coefficient of hygroscopic expansion in the transverse direction of 0 to 6 ppm/% RH.Type: GrantFiled: September 16, 2011Date of Patent: June 3, 2014Assignee: Toray Industries, Inc.Inventors: Masato Horie, Takuji Higashioji, Nozomi Yokoyama
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Publication number: 20140135412Abstract: Method for removing a foreign substance from a polymer composition including subjecting a polymer composition to a medium selected from the group comprising chemical reagents, electron beam radiation, electromagnetic radiation, or combinations thereof, removing the transformed foreign substance from the polymer composition, where the foreign substance is by subjecting the polymer composition to the medium at least partially transformed into a form that facilitates removal from the polymer composition.Type: ApplicationFiled: October 16, 2013Publication date: May 15, 2014Applicant: KRONES AGInventor: Thomas Friedlaender
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Patent number: 8722161Abstract: Disclosed is a heat shrinkable polyester film formed from a polyester resin that is mainly composed of ethylene terephthalate and contains 3-12% by mole (inclusive) of one or more monomer components, which can be amorphous components, relative to all the polyester resin components, in which the heat shrinkable polyester film has a main shrinkage direction which is the width direction. The heat shrinkable polyester film is characterized in that the shrinkage in 80° C. glycerin, the shrinkage in 130° C. glycerin and the tensile breaking strength in the longitudinal direction are controlled within specific ranges.Type: GrantFiled: March 16, 2011Date of Patent: May 13, 2014Assignee: Toyo Boseki Kabushiki KaishaInventors: Masayuki Haruta, Yukinobu Mukoyama, Katsuya Ito
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Publication number: 20140127441Abstract: An ethylene terephthalate type polyester resin for forming containers, having an intrinsic viscosity in a range of 0.80 to 0.90 dL/g, containing copolymerizable components other than the ethylene glycol and terephthalic acid in an amount of less than 1.5 mol %, containing monohydroxyethyl terephthalate and bishydroxyethyl terephthalate in a total amount of less than 0.005% by weight, and having a heat of fusion of not more than 50 J/g and a crystallinity of less than 60%. The ethylene terephthalate type polyester resin has a high intrinsic viscosity, excellent stretch formability and excellent melting property.Type: ApplicationFiled: July 6, 2012Publication date: May 8, 2014Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Kazuhiko Nakamura, Toshiki Yamada
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Publication number: 20140120336Abstract: The fiber cross-section of an island-in-a-sea composite fiber perpendicular to the fiber axis, the island component and sea component are arranged such that the sea component surrounds the island components. The composite cross-section is very consistent, and the fiber has excellent post-processibility. The island-in-a-sea composite fiber wherein diameter of the island component is 10 to 1000 nm, variation of the island component diameter is 1.0 to 20.0%, modification ratio is 1.00 to 1.10, and variation of the modification ratio is 1.0 to 10.0%.Type: ApplicationFiled: June 12, 2012Publication date: May 1, 2014Applicant: Toray Industries, Inc.Inventors: Masato Masuda, Joji Funakoshi, Akira Kishiro
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Publication number: 20140113132Abstract: A bio-based polyester thin film substrate for thermal transfer printing ribbon. The bio-based polyester thermal transfer ribbon substrate film has a radiocarbon content of at least 12 pMC. The film exhibits excellent uniformity, handling, and processability, substantially equivalent to petroleum-based counterparts, while being derived wholly or partly from non-petroleum sources.Type: ApplicationFiled: December 23, 2013Publication date: April 24, 2014Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Stefanos L. SAKELLARIDES, Milan William MOSCARITOLO
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Publication number: 20140113094Abstract: There is provided an article comprising a copolyester containing residues of neopentyl glycol, 2,2,4,4-tetraalkyl 1,3-cyclobutanediol such as 2,2,4,4-tetramethyl 1,3-cyclobutanediol, tin atoms, aluminum atoms, an alkali or alkaline earth metal atoms such as lithium atoms, optionally phosphorus atoms, and having an It.V. of at least 0.55 dL/g, and Tg of at least 90° C. Such higher It.V. copolyesters can now be made having high Tg, good thermal stability, and higher insertion of 2,2,4,4-tetraalkyl 1,3-cyclobutanediol.Type: ApplicationFiled: December 20, 2013Publication date: April 24, 2014Applicant: EASTMAN CHEMICAL COMPANYInventors: Barry Glen Pearcy, Jonathan Terrill Milburn, Alan Wayne White
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Patent number: 8664351Abstract: The present invention provides a biaxially oriented polyester film for a backsheet of solar batteries which exhibits a good hydrolysis resistance and a low haze. The present invention relates to a biaxially oriented polyester film for a backsheet of solar batteries, comprising titanium in an amount of not more than 20 ppm in terms of a titanium atom, phosphorus in an amount of not more than 70 ppm in terms of a phosphorus atom, and antimony in an amount of not more than 10 ppm in terms of an antimony atom; and having a carboxyl end group content of not more than 26 equivalents/t and an intrinsic viscosity of 0.65 to 0.90.Type: GrantFiled: January 13, 2011Date of Patent: March 4, 2014Assignee: Mitsubishi Plastics, Inc.Inventors: Koutarou Nozawa, Taku Aoike
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Patent number: 8658285Abstract: Biaxially oriented polyester films including polyester polymer, a carbodiimide hydrolysis stabilizer, and a UV absorber are described. The polyester films have a carboxyl end group concentration of 5-20 equivalents per ton, and a haze value of 2% or less. The films exhibit superior transparency and possess stable light transmission characteristics. Methods of making the films and articles produced from the films are also described.Type: GrantFiled: June 9, 2011Date of Patent: February 25, 2014Assignee: Toray Plastics (America), Inc.Inventors: Carlos Hinton, Nao Yokota, Hirokazu Tajima, Roberto Siu
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Patent number: 8648166Abstract: An antimony-free PET resin produced by using an inorganic Ti—Mg catalyst and a small amount of blue and red dyes, in the absence of an antimony catalyst or a phosphorus stabilizer; and, in a melt spinning process for producing PET polyester fiber, the PET resin demonstrates excellent spinnability but no yarn breaks or aggregation of TiO2 delustering agent so that the resultant PET polyester fiber features commercially desired in both color tone and glossiness. Especially the PET resin and the PET polyester fiber containing no antimony are therefore environmentally friendly by causing no heavy metal pollution to the environment.Type: GrantFiled: November 9, 2011Date of Patent: February 11, 2014Assignee: Nan Ya Plastics CorporationInventor: Zo-Chun Jen
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Patent number: 8642715Abstract: A polyester film containing a polyester resin having an intrinsic viscosity IV of from 0.73 to 0.9 dL/g in which the polyester film has a specific heat change at 85° C. to 135° C. (?Cp) of from 0.06 to 0.1 J/g, has an excellent weather resistance, a good planar surface state and a low thermal shrinkage.Type: GrantFiled: June 10, 2011Date of Patent: February 4, 2014Assignee: FUJIFILM CorporationInventors: Kiyokazu Hashimoto, Yasutomo Goto, Kenji Kano
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Patent number: 8637764Abstract: The present invention provides a biaxially oriented polyester film for a backsheet of photovoltaics which exhibits an excellent hydrolysis resistance and a low shrinkage rate. The present invention relates to a biaxially oriented polyester film for a backsheet of photovoltaics, comprising a polyester having an intrinsic viscosity of 0.65 to 0.90 dL/g as measured in a mixed solvent comprising phenol and tetrachloroethane at a mass ratio of 50/50 at 23° C., a carboxyl end group content of 0 to 26 equivalents/t, and a phosphorus element content of 0 to 170 ppm, which biaxially oriented polyester film has a shrinkage rate of not more than 0.8% as measured in a longitudinal direction thereof after subjected to heat treatment at 150° C. for 30 min.Type: GrantFiled: September 13, 2010Date of Patent: January 28, 2014Assignee: Mitsubishi Plastics, Inc.Inventor: Koutarou Nozawa
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Publication number: 20140018513Abstract: Disclosed are a preparation method for drawn fibers that enables the preparation of drawn poly(ethyleneterephthalate) fibers exhibiting with high fineness of at least 2,000 denier while having high tenacity and excellent dimensional stability and causes almost no deterioration of tenacity during the manufacturing process of tires such as vulcanization, and a drawn poly(ethyleneterephthalate) fiber and a tire cord that are obtained by the preparation method. The preparation method for drawn poly(ethyleneterephthalate) fiber includes: melt-spinning a polymer comprising at least 90 mol % of poly(ethyleneterephthalate) having a content of terminal carboxyl group (—COOH) in the range of 20 to 30 eq/106 g at a spinning speed of 2,500 to 4,000 m/min to form a undrawn fiber having a fineness of at least 2,000 denier; and drawing the undrawn fiber at a draw ratio of 1.4 to 2.4.Type: ApplicationFiled: March 30, 2012Publication date: January 16, 2014Applicant: KOLON INDUSTRIES, INC.Inventors: Sung-Ho Park, Il Chung, Gi-Woong Kim
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Patent number: 8623991Abstract: A process for producing an IPA/PET copolymer fiber that is homogenous having a substantially level, single IPA copolymer content, said fiber having improved pilling resistance and dye uptake.Type: GrantFiled: October 28, 2010Date of Patent: January 7, 2014Assignee: David C. Poole Company, Inc.Inventor: Robert Alton Usher, Jr.
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Publication number: 20130344345Abstract: A bio-based polyester window film optionally including a a UV light absorbing layer including a bio-based polyester and a UV light absorber. The bio-based polyester window film has a radiocarbon content of at least 19 pMC. The film exhibits excellent clarity and light stability, substantially equivalent to petroleum-based counterparts, while being derived wholly or partly from non-petroleum sources.Type: ApplicationFiled: April 30, 2013Publication date: December 26, 2013Applicant: TORAY PLASTICS (AMERICA), INC.Inventor: TORAY PLASTICS (AMERICA), INC.
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Publication number: 20130324692Abstract: A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 1.5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.Type: ApplicationFiled: December 20, 2012Publication date: December 5, 2013Inventor: Thomas Clark
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Publication number: 20130324677Abstract: A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 1.5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.Type: ApplicationFiled: May 13, 2013Publication date: December 5, 2013Inventor: Thomas Clark
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Publication number: 20130316138Abstract: Provided is a protective sheet for glasses, which has excellent workability, visibility and transparency. A protective sheet for glasses, characterized by having a distinctness of image of 70% or more and an internal haze of 3.0% or less as measured in accordance with JIS K7136.Type: ApplicationFiled: January 26, 2012Publication date: November 28, 2013Applicant: NITTO DENKO CORPORATIONInventors: Hiroko Ikenaga, Takeshi Igarashi, Toshitaka Suzuki, Akifumi Kido, Yuki Saitou
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Publication number: 20130309479Abstract: The present invention relates to a polyester yarn which can be used in a fabric for an airbag. More particularly, the present invention relates to a polyester yarn for an airbag having a modulus of 60 g/d or less in the elongation range of 2.0-3.0%, a modulus of 45-70 g/d in the elongation range of 9.0-11.0%, and a modulus of 60 g/d or more in the elongation range of 12.0-14%, and a fabric for an airbag including the same. When the polyester yarn is used in the fabric for an airbag, it provides excellent packing property, excellent occupant-protection performance upon collision, and gas barrier effect, and also minimizes the impact applied to the occupant, thereby safely protecting the occupant.Type: ApplicationFiled: January 18, 2012Publication date: November 21, 2013Applicant: KOLON INDUSTRIES, INC.Inventors: Young-Jo Kim, Sang-Mok Lee, Young-Soo Lee, Gi-Woong Kim
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Publication number: 20130295377Abstract: A polyester film suitable for use in battery packages, particularly for use in deep drawn packages of lithium ion secondary batteries that includes an electrolyte (in a solid state or in a liquid state), and which is also suitable for use in packages of pharmaceutical products that have various shapes. The polyester film is characterized in that the stresses at 5% elongation (F5 values) and the stresses at 10% elongation (F10 values) of the film in the longitudinal direction and in the transverse direction at 25° C., respectively, satisfy (I) and (II): 1.5?F10MD/F5MD?1??(I) 1.Type: ApplicationFiled: December 15, 2011Publication date: November 7, 2013Applicant: TORAY Industries, Inc.Inventors: Isao Manabe, Teruya Tanaka, Kozo Takahashi
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Patent number: 8568841Abstract: Disclosed is a thermo-shrinkable polyester film having superior thermal shrinkage properties. The thermo-shrinkable polyester film has a strength of 3.5˜6.5 kg/mm2 in a direction perpendicular to a main shrinking direction at an initial elongation less than 10%, an elongation at rupture of 50˜700% in a direction perpendicular to a main shrinking direction, a thickness uniformity (?R) of 4 or less and a shrinkage ratio of 5% or less in a direction perpendicular to a main shrinking direction, thus preventing the rupture thereof in a rolling process and so on and ensuring process stability and productivity.Type: GrantFiled: December 11, 2008Date of Patent: October 29, 2013Assignee: Kolon Industries, Inc.Inventors: Yun Jo Kim, Chan Seok Yoon, Si Min Kim