Aryl-containing Carboxylic Acid Or Derivative Of An Aryl-containing Dicarboxylic Acid Patents (Class 528/308)
  • Patent number: 6699931
    Abstract: The present invention relates to modified alkyd polymers, and compositions made from such polymers, wherein the alkyd polymers are modified with polyol-containing latex compositions and/or diol-containing latex compositions. The invention further relates to compositions prepared from such modified alkyd compositions.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: March 2, 2004
    Assignee: Eastman Chemical Company
    Inventors: Thauming Kuo, John David Moncier, Allan Scott Jones, David Logan Murray, Mahendra Kumar Sharma
  • Patent number: 6696521
    Abstract: A high performance UPR (unsaturated polyester resin) is disclosed. The UPR comprises recurring units of phthalic anhydride, 2-methyl-1,3-propanediol, and maleic anhydride. It has a fumarate/maleate ratio 85/15 or greater. It has a bi- or multi-modal molecular weight distribution. A high molecular weight portion of the UPR has a peak molecular weight (Mp) 50,000 or greater. It has a weight average molecular weight (Mw) 15,000 or greater. An ortho UPR of the invention performs as well as or better than traditional iso UPR.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: February 24, 2004
    Assignee: Arco Chemical Technology, LP
    Inventors: Lau S. Yang, Paul Malcolm Puckett
  • Patent number: 6686051
    Abstract: A polyester polymer includes at least one hydroxyl terminated polyoxetane block containing repeat units derived from polymerizing at least one oxetane monomer having a pendant —CH2—O—(CH2)n—Rf group wherein said Rf group is partially or fully fluorinated. A preferred process for forming said polymer is by reacting a hydroxyl terminated polyoxetane with a polycarboxylic acid under appropriate conditions to form an ester linkage and then adding and reacting that product with polyester forming reactants. The polyester polymer containing at least one polyoxetane block therein when reacted with an amino resin curative can be used as a coating on a substrate wherein the coating has dry erase properties. The coated substrate can be used as prepared or applied to yet other substrates.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: February 3, 2004
    Assignee: OMNOVA Solutions Inc.
    Inventors: Raymond J. Weinert, Robert E. Medsker, Daniel D. Woodland, Edward N. Kresge, Daniel C. Gottschalk, Joe A. Wright
  • Patent number: 6686401
    Abstract: Liquid composition polymerizable, by means of radicalic polymerization, into organic glass, comprising the product obtained from the transesterification of a mixture of diallyl carbonate (A) and a phthalic ester (B), with one or more polyols (C), linear or branced, containing from two to eight carbon atoms in the molecule.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: February 3, 2004
    Assignee: Great Lakes Chemical (Europe) GmbH
    Inventors: Fiorenzo Renzi, Andrea Bendandi, Roberto Forestieri
  • Patent number: 6683132
    Abstract: Self-crosslinking aqueous coating compositions are disclosed comprising a water-dispersible alkyd having both sulfonate and acetoacetate functionality, a suitable bi- or poly-functional primary amine, and a monofunctional primary or cycloaliphatic secondary amine. The crosslinking of the composition includes oxidative curing via the fatty acid segments of the alkyd, and crosslinking via reaction between the acetoacetate groups of the alkyd and the primary amine groups of the polyfunctional amine. The aqueous alkyd systems disclosed do not require the presence of amines for the purpose of dispersing the alkyds, while exhibiting superior tack-free and through-dry times when used in coating compositions. Performance levels are achieved that heretofore had required increases in molecular weight and Tg, with a concomitant increase in VOC levels. Also disclosed are methods of making the inventive compositions.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: January 27, 2004
    Assignee: Eastman Chemical Company
    Inventors: Martin Frederick Schick, Amy Lee Bolton, Thauming Kuo
  • Patent number: 6670033
    Abstract: A process for the formation of a purified anhydrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8% and is substantially colorless. The anhydrosugar alcohol is purified by distillation, recrystallization from methanol, ethanol or ethylene glycol, melt recrystallization, or a combination thereof. Preferably, the purification is by distillation followed by recrystallization from methanol, ethanol or ethylene glycol. A test for determining the purity of the anhydrosugar alcohol is disclosed, wherein the color of the anhydrosugar alcohol after annealing at a temperature of at least 260° C. for at least four hours is examined. Alternatively, purity can be determined by examination of ultraviolet (UV) transmittance of the purified anhydrosugar alcohol at various wavelengths.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: December 30, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael A. Hubbard, Michael Wohlers, Helmut B. Witteler, Edward G. Zey, George Kvakovszky, Thomas H. Shockley, Larry F. Charbonneau, Norbert Kohle, Jochen Rieth
  • Patent number: 6670429
    Abstract: A block copolyester comprises a hard segment and a soft segment, wherein the melting point of the copolyester is greater than or equal to 200° C., and the glass transition temperature of the copolyester is less than or equal to −40° C. The hard segment is preferably polyethylene terephthalate, polybutylene terephthalate, or polyethylene naphthalate. The soft segment is preferably formed from at least one dimer fatty acid and/or dimer fatty diol and/or equivalent thereof. The copolyester is especially suitable for use in automotive parts, particularly where thermal stability is required.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: December 30, 2003
    Assignee: Imperial Chemical Industries PLC
    Inventors: Eric Appelman, Jeffrey Thomas Carter
  • Patent number: 6667383
    Abstract: A polyester resin is prepared by polycondensing a dicarboxylic acid component containing terephthalic 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 (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the Periodic Table, via an esterification reaction or an ester exchange reaction, wherein the content of copolymerized components other than the terephthalic acid component and the ethylene glycol component, is not more than 4 mole % based on the total dicarboxylic acid component, and in a molded product with a thickness of 3.5 mm injection-molded at 280° C., the difference between the absorbance at a wavelength of 395 nm and the absorbance at a wavelength of 800 nm is at least 0.08, and the difference between the absorbance at a wavelength of 500 nm and the absorbance at a wavelength of 800 nm is at most 0.05.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: December 23, 2003
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshihiro Fujimori, Masahiro Nukui, Yutaka Yatsugi, Kenichi Matsui
  • Patent number: 6663961
    Abstract: 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: Grant
    Filed: June 19, 2001
    Date of Patent: December 16, 2003
    Assignees: Oil Corporation, Korea Institute of Science and Technology
    Inventors: Hyun Nam Cho, Sang Ho Bae, Il Seok Choi
  • Patent number: 6663928
    Abstract: Heat-shrinkable polyester films, each having a heat shrinkability of 5-60% after treatment in hot water at 70° C. for 5 seconds and 65-95% after treatment in hot water at 85° C. for 5 seconds, both in the main shrinkage direction of the film, and 10% or lower after treatment in hot water at 85° C. for 5 seconds in a direction perpendicular to the main shrinkage direction of the film, the heat-shrinkage stress in the main shrinkage direction of the film being 13 MPa or smaller, and the film haze being lower than 10%, exhibits excellent shrinkage finish in appearance with only rare occurrence of wrinkles, shrinkage spots and strains by shrinkage; therefore, these films are suitable for full labels on bottles, particularly for full labels on PET bottles.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: December 16, 2003
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Hideki Ito, Norimi Tabota, Hiroshi Nagano
  • Patent number: 6664363
    Abstract: The present invention relates to low viscosity aromatic polyester polyols having an average functionality of two and methods for preparing such polyols. In particular, the invention relates to low viscosity aromatic polyester polyols prepared by reacting a phthalic acid based material with diethylene glycol, a higher functional polyol having an average functionality of greater than two and a long chain alkyl acid, ester or oil. The resulting aromatic polyester polyol has an average functionality of two and has a lower dynamic viscosity as compared to the esterification product of a phthalic acid based material with diethylene glycol alone.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: December 16, 2003
    Assignee: Stepan Company
    Inventor: James A. Faunce
  • Patent number: 6663977
    Abstract: The present invention provides a heat-sealable polyester composition having an amorphous processing window ranging from a Tg in the range of about 40° C. to about 70° C., to a Tcg in the range of about 70° C. to about 150° C. The composition preferably contains a mixture of poly(ethylene terephthalate) homopolymer or copolymer and poly(trimethylene terephthalate) homopolymer or copolymer, either as a physical blend or as a copolyester oligomer or polymer prepared from the respective monomers. The resulting composition is heat-sealable at low temperatures, retains barrier properties and is non-flavor-scalping.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: December 16, 2003
    Assignee: E.I. du Pont de Numours and Company
    Inventors: Joseph V. Kurian, Diane M. Hahm, Benjamin A. Smillie
  • Patent number: 6660398
    Abstract: The invention concerns powder thermosetting coating compositions comprising (a) an amorphous polyester containing carboxyl groups, rich in isophthalic acid and neopentylglycol, optionally branched with a polycarboxylic acid or a polyol containing at least three functional groups; (b) a semicrystalline polyester containing carboxyl groups prepared from one or several saturated aliphatic dicarboxylic acids with linear chain, and from a saturated aliphatic diol with linear or cyclic chain optionally branched with a polycarboxylic acid or with a polyol containing at least three functional groups, and having a melting point (Tm) of at least 40° C. and an acid value of 5 to 50 mg of KOH/g, and (c) a cross-linking agent. Said compositions are useful for preparing powder paints and varnishes providing excellent quality coatings whereof the brilliance, measured at an angle of 60°, according to the ASTM D 523 standard is always less than 50%, that is half-gloss or matt coatings.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: December 9, 2003
    Assignee: UCB, S.A.
    Inventors: Luc Moens, Kris Buysens, Daniel Maetens
  • Patent number: 6656577
    Abstract: The present invention is a process for making a low color copolymer of ethylene glycol, isosorbide and terephthalic acid or dimethyl terephthalate. This copolymer, poly(ethylene-co-isosorbide) terephthalate, is useful for making bottles, hot-fill containers, films, sheet, fiber, strand and optical article applications. It can also be used to make polymer blends and alloys.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: December 2, 2003
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Douglas J. Adelman, Larry F. Charbonneau, Sophie Ung
  • Patent number: 6657017
    Abstract: A sulfonated polyester compound useful as a soil release agent having isophthalate and terephthalate groups wherein the molar ratio of isophthalate groups to terephthalate groups is at least 0.15.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: December 2, 2003
    Assignee: Rhodia Inc
    Inventors: Shiming Wo, Jeanne Chang, Stephen Kauder
  • Patent number: 6657002
    Abstract: The present invention is directed to a polyester carboxylate polymeric pigment dispersant to be used as a grind resin to incorporate inorganic pigment into a pigment dispersion for a coating composition. The polymeric pigment dispersant is the reaction product of pentaerythritol, hexahydrophthalic anhydride, glycidylneodecanoate, and dimethylethanolamine. The present invention is also directed to a method of preparing the polymeric pigment dispersant. In this method, the pentaerythritol and the hexahydrophthalic anhydride are polymerized to form an intermediate compound. Next, an epoxy group of the glycidylneodecanoate reacts with the intermediate compound, and then the dimethylethanolamine neutralizes the intermediate compound to form the completed polymeric pigment dispersant. The polymeric pigment dispersant is utilized for efficient wetting and grinding of the pigment.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: December 2, 2003
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, JoAnn Lanza
  • Patent number: 6656578
    Abstract: Provided is a process for producing an aromatic liquid crystalline polyester comprising the steps of: charging 80 20 mol % of a compound represented by the following formula (I) and 20 to 80 mol % of a compound represented by the following formula (II) into a reaction vessel; conducting polycondensation reaction at a temperature from 270 to 350° C. to produce a aromatic liquid crystalline polyester; discharging the aromatic liquid crystalline polyester in a molten state from the reaction vessel and solidifying; then, pulverizing the solidified polyester into particles; and heat-treating at a temperature from 200 to 310° C., The aromatic liquid crystalline polyester has improved low temperature molding processability, and the film thereof has sufficient heat-resistance and excellent gas barrier properties.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: December 2, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitaka Ohbe, Kazunori Akiyoshi, Shino Moriyama
  • Patent number: 6653440
    Abstract: In the production method of the present invention, a copolyester of intended sublimable diol proportion is produced by the reaction of a dicarboxylic acid and/or an ester-forming derivative thereof with a sublimable diol and a non-sublimable diol with an increased conversion of the sublimable diol. Since the escape of the sublimable diol is effectively prevented, the process solves the problem of clogging pressure-reduced pipes, etc. of an apparatus for polyester resin production.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: November 25, 2003
    Assignee: Mitsubishi Gas Chemical Company
    Inventors: Takeshi Hirokane, Tsuyoshi Ikeda, Shojiro Kuwahara
  • Patent number: 6652979
    Abstract: Biaxially-drawn polyester film for fabrication which is characterized in that it is a film comprising polyester in which ethylene terephthalate units and/or ethylene naphthalate units are the chief structural component and containing 0.1-2 wt % of a carnauba wax and 1 to 200 ppm of germanium, and the melting point of said film is 180-270° C., the angle of contact to water is 70°-120°, and the planar orientation coefficient is 0.08-0.15. This film shows outstanding release properties following repeated use, use after fabrication and use in an aqueous environment and, furthermore, it exhibits stable properties with little variation and, in particular, following lamination to metal sheet such as steel or aluminium, when used as the inner face of a fabricated metal can, it is outstanding in its non-stick properties to the contents, and provides a combination of heat resistance and processability.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: November 25, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Kohzo Takahashi, Ryosuke Matsui, Masahiro Kimura
  • Patent number: 6649731
    Abstract: By the present invention, there are provided a catalyst for polyester preparation, which comprises a solid titanium compound containing titanium, oxygen, carbon and hydrogen and having a Ti—O bond and which has a maximum solubility in ethylene glycol, as measured when the catalyst is dissolved in ethylene glycol under heating at 150° C., of not less than 3,000 ppm in terms of a titanium atom, a catalyst for polyester preparation, which comprises a titanium-containing solution wherein a contact product of a hydrolyzate of a titanium halide or a hydrolyzate of a titanium alkoxide with a polyhydric alcohol is dissolved in ethylene glycol in an amount of 3,000 to 100,000 ppm in terms of a titanium atom, a process for preparing a polyester using the catalyst, and a polyester prepared by the process.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: November 18, 2003
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hideshi Hori, Fujito Ehara, Akiyoshi Shimizu, Nobumasa Mukai, Shoji Hiraoka
  • Patent number: 6645615
    Abstract: The present invention relates to a self-supporting polymer film with a silicone-containing coating layer on the front surface that is capable of releasing free silicone oil and a slip control coating on the back surface, where the slip control coating has an exposed surface adapted to contact the free silicone oil. The slip control coating includes water soluble copolyester; and optionally includes a coupler, preferably a silane. A method for controlling the slip of silicone coated film by coating the back side of the film with this slip control coating is also disclosed.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: November 11, 2003
    Assignee: Mitsubishi Polyester Film, LLC
    Inventors: John M. Heberger, Kenneth J. Muschelewicz
  • Patent number: 6645589
    Abstract: The present invention provides a white biaxially oriented polyester film having a two-layer structure of layer A/layer B, wherein the layer A contains a polyester having a melting point of 240° C.-260° C. and containing titanium dioxide in a proportion of 5-30 wt %, the layer B contains a polyester having a melting point of 210° C.-235° C., and the film shows a dimensional change of not more than 2%, which is obtained by thermally adhering a layer B side of the film to a metal plate to give a laminate, which is heat-treated at 210° C. for 2 minutes, and subjecting the film after the treatment to the measurement, a film-laminated metal plate using the polyester film and a metal container obtained by forming this film-laminated metal plate. The polyester film of the present invention has superior heat resistance and is capable of stably covering the surface of a metal plate even after a heat treatment during a can forming process and the like.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: November 11, 2003
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Shingo Fujii, Hideki Igushi, Hiroshi Nagano
  • Patent number: 6645619
    Abstract: The present invention provides poly(trimethylene terephthalate) copolymerized with ester-forming sulfonate and a fiber thereof. The polymer of the present invention is high in melting point, small in loss of melting viscosity and has a high molecular weight. The fiber of the present invention is high in toughness, excellent in whiteness and dyeable with a cationic dye, whereby it is useful for clothing, carpets or non-woven sheets, etc.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 11, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Jinichiro Kato, Tetsuko Takahashi, Shinichi Okajima, Katsuhiro Fujimoto, Kenji Imura
  • Publication number: 20030208030
    Abstract: An apparatus for continuously producing polybutylene terephthalate, which comprises a first reactor for reacting an aromatic dicarboxylic acid with a glycol, thereby producing an oligomer, a second reactor for polycondensating the oligomer, thereby preparing a low polymerization product, and a third reactor for further polycondensating the low polymerization product, thereby producing a high molecular weight polyester, where the second reactor is a vertical, cylindrical polymerization vessel having a plurality of concentrical partitioned reaction compartments therein, each of the reaction compartments being provided with stirring blades and a heater, and an outlet for volatile matters being provided at the upper part of the vessel. The second reactor contributes to efficient and continuous production of polybutylene terephthalate having a good quality.
    Type: Application
    Filed: May 28, 2003
    Publication date: November 6, 2003
    Inventors: Shuji Yamaguchi, Hidekazu Nakamoto, Susumu Harada, Norifumi Maeda
  • Patent number: 6641900
    Abstract: A multilayered polymer film includes a first set of optical layers and a second set of optical layers. The first set of optical layers is made from a polyester which is often birefringent. The polyesters of the first set of optical layers typically have a composition in which 70-100 mol % of the carboxylate subunits are first carboxylate subunits and 0-30 mol % are comonomer carboxylate subunits and 70 to 100 mol % of the glycol subunits are first glycol subunits and 0 to 30 mol % of the glycol subunits are comonomer glycol subunits, where at least 0.5 mol % of the combined carboxylate and glycol subunits are comonomer carboxylate or comonomer glycol subunits. The multilayered polymer film may be used to form, for example, a reflective polarizer or a mirror.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 4, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Timothy J. Hebrink, William W. Merrill, Carl A. Stover
  • Patent number: 6639017
    Abstract: The invention relates to flame-retardant, unsaturated polyester resins made from unsaturated and saturated dicarboxylic acids and/or their anhydrides, from polyhydric alcohols, from one or more monomers and from a reactive phosphorus compound, which contain structural units of the formula IV where R1 is straight-chain or branched alkyl, cycloalkyl, aryl or alkylaryl groups having from 1 to 18 carbon atoms and R2 is methyl or hydrogen. The invention likewise relates to a process for preparing such polyester resins and to their use.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: October 28, 2003
    Assignee: Clariant GmbH
    Inventors: Sebastian Hörold, Hans-Peter Schmitz
  • Patent number: 6639047
    Abstract: The present invention relates to a biodegradable disposable syringe and more particularly, to the biodegradable disposable syringe by using a novel polyester resin composition under a specific injection molding condition, thus being able to be disposed of without causing environmental contamination.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: October 28, 2003
    Assignee: Boo Yoon Tech, Inc.
    Inventor: Yeo Saeng Yoon
  • Patent number: 6639009
    Abstract: A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic polyester oligomer and a polymerization catalyst with water and a surfactant, and mixing the macrocyclic polyester oligomer and polymerization catalyst with water and the surfactant thereby forming a suspension. In another embodiment, a process for impregnating macrocyclic polyester oligomers for polymerization includes the steps of providing a suspension of a macrocyclic polyester oligomer and a polymerization catalyst in water, applying the suspension to a base material, drying to remove water from the suspension, and pressing the dried suspension to a desired form. In yet another embodiment, a composition of macrocyclic polyester oligomer includes a macrocyclic polyester oligomer, a polymerization catalyst, and water.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: October 28, 2003
    Assignee: Cyclis Corporation
    Inventors: Steven J. Winckler, Tohru Takekoshi
  • Patent number: 6630564
    Abstract: To a copolyester reacted essentially by terephthalic acid components and ethylene glycol units, adding 1% to 15 weight % of specific diol unit selected from the group consisting of at least one of 2-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and hydroxypivalyl hydroxypivalate; or adding 0 to 1.0 mole % of mulfunctional group components consisting of at least one or more of trimellitic acid, trimellitic anhydride and trimethylol propane; and adding 0.01 to 0.5 weight % of compound represented by the following formula: can improve the color hue of the copolyester, and increase the reaction rate of the copolyester subjecting to solid phase polymerization, therefore improve the color hue of the shaped articles produced therefrom; furthermore, reduce the decline degree of the intrinsic viscosity after melt processing.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 7, 2003
    Assignee: Nan Ya Plastics Corporation
    Inventor: Zo-Chun Jen
  • Patent number: 6630601
    Abstract: An aromatic polyester is pre-decomposed by heating together with bis-&bgr;-hydroxyethyl terephthalate and/or a low condensate thereof and then, reacted with ethylene glycol to convert the terephthalic acid component of the pre-decomposed product into bis-&bgr;-hydroxyethyl terephthalate and/or a low condensate thereof. The thus obtained solution composition, that is, bis-&bgr;-hydroxyethyl terephthalate solution composition containing ethylene glycol, bis-&bgr;-hydroxyethyl terephthalate and cations and/or anions as impurities is brought into contact with a cation exchanger and/or an anion exchanger to remove cations and anions as impurities to produce bis-&bgr;-hydroxyethyl terephthalate having a small content of ions.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: October 7, 2003
    Assignee: Aies Company Limited
    Inventors: Shuji Inada, Kikuchi Sato
  • Patent number: 6627303
    Abstract: Articles made from a thermoplastic resin composition comprising a high modulus fiber and a resorcinol polyester or resorcinol polyester carbonate resin showing high strength and stiffness along with surprisingly good retention of gloss and color when exposed to weathering.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: September 30, 2003
    Assignee: General Electric Company
    Inventors: Robert R. Gallucci, Xiangyang Li, Paul D. Sybert
  • Patent number: 6623853
    Abstract: Disclosed is a method of copolymerizing polyethylene glycol (PEG) and branching agent into polyethylene terephthalate (PET) to achieve a polyethylene glycol-modified polyester composition that can be spun into filaments. Fabrics made from fibers formed from the copolyester composition possess wicking, dyeability, and tactility properties that are superior to those of fabrics formed from conventional polyethylene terephthalate fibers of the same yarn and fabric construction. Also disclosed are polyethylene glycol modified copolyester compositions, fibers, yarns, and fabrics.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: September 23, 2003
    Assignee: Wellman, Inc.
    Inventors: James Burch Branum, Keith James Carnes, Billy Mack Humelsine, Carl Steven Nichols
  • Patent number: 6620362
    Abstract: A manufacturing method of polyester fiber having improved light fastness is provided, which comprises copolymerizing dicarboxylic acid, diol component and the ester forming monomer into a copolyester, wherein said ester forming monomer is present in an amount of 0.05 mole % above based upon the total dicarboxylic acid components and is represented by the following formula (1) R2OOC—R1—COOR3 (wherein R1 is a naphthalene ring, R2 and R3 are selected from the alkyl group having one to four hydrogen atoms or carbon atoms, and R2 is independent from R3, it can be the same or different with R3; the position of substitute group for the naphthalene ring on the ester forming monomer can be: -2,3-, -2,5-, -2,6-, -2,7-, -1,2-, -1,3-, -1,4-, -1,5-, -1,6-, -1,7-, -1,8-), subjecting the formed copolyester component to spin-draw process to obtain fiber which possess excellent light fastness after dyeing.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 16, 2003
    Assignee: Nan Ya Plastics Corporation
    Inventor: Zo-Chun Jen
  • Patent number: 6617006
    Abstract: A biaxially oriented polyester film to be laminated on a metal plate and molded, which comprises an aromatic polyester composition comprising: (A) an aromatic polyester which comprises ethylene terephthalate as the main recurring unit and a titanium compound and a phosphorus compound both of which satisfy at least one of the following expressions (1) and (2): 0.1≦Ti/P≦3.0  (1) 5≦Ti+P≦60  (2) wherein Ti is the amount (mmol %) of elemental titanium of the titanium compound contained in this aromatic polyester and P is the amount (mmol %) of elemental phosphorus of the phosphorus compound contained in the aromatic polyester, and the following expression (3): 2≦Ti≦20  (3) wherein Ti is as defined hereinabove, and which contains alkali metal compounds, germanium compound and antimony compound in a total amount of not more than 3 ppm in terms of the total of elemental alkali metals, elemental germanium and elemental antimony; and (B) 0.05 to 5.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: September 9, 2003
    Assignee: Teijin Limited
    Inventors: Koji Kubo, Masahiko Kosuge, Shunsuke Kubota, Kinji Hasegawa, Nobuo Minobe, Kimihiko Sato
  • Patent number: 6613259
    Abstract: A process for preparing polyester pellets which involves blending polyethylene terephthalate and polyethylene isophthalate copolymer before solid state polymerization, the polyethylene isophthalate copolymer being composed of dicarboxylic acid constituent units derived from dicarboxylic acids containing terephthalic acid and isophthalic acid and diol constituent units derived from diols containing ethylene glycol and 1,3-bis(2-hydroxyethoxy)benzene, palletizing the blend and crystallizing the pellets.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: September 2, 2003
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Koji Takahashi, Koji Nakamachi, Hiroji Niimi, Shoji Hiraoka, Masayuki Sakai, Hitoshi Tsuboi
  • Patent number: 6610813
    Abstract: A polyester having less than 50 hydrogen-carbon bonds per 1000 molecular weight units exhibits very low optical loss in the range of wavelengths commonly used for optical communication, and exhibits other physical properties suitable for use as a waveguide core material and/or a waveguide cladding material in optical fibers and/or planar optical devices.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: August 26, 2003
    Assignee: Corning Incorporated
    Inventors: Keith A. Horn, Thomas M. Leslie, James V. Suggs, Mingqian He
  • Patent number: 6610378
    Abstract: A biaxially oriented polyester film capable of lining the interior and/or exterior of a container, including a polyester containing about 93 mol % or more of ethylene terephthalate. The film has a breaking elongation in the machine direction. (S MD) and the breaking elongation in the transverse direction (S TD), satisfying the relationships 140%≦(S MD+S TD)/2≦300% and |S MD−S TD|≦60%. The film is capable of lining the interior and/or exterior of food containers, especially on the inner and outer faces of metallic cans, since the film exhibits excellent formability, impact resistance and taste properties.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: August 26, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Masahiro Kimura, Kohzo Takahashi, Koichi Abe
  • Patent number: 6610796
    Abstract: Disclosed is a flame retardant polybutyleneterephthalate resin prepared be copolymerizing a phosphorus-based flame retardant represented by the following formula I and a butyleneterephthalate unit: wherein R1 and R2 are different or the same and are methyl or butyl including a hydroxyl group.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: August 26, 2003
    Assignee: Kolon Industries Inc.
    Inventors: Young-Ik Seo, Chung-Seock Kang, Tae-Gun Choi, Jun-Myoung Song
  • Patent number: 6610795
    Abstract: A process for producing a polyester that comprises 1 to 90 wt. % poly(alkylene ether) glycol. The process comprises the step of copolymerizing (i) a preformed polyester polymer having an inherent viscosity of at least 0.4 dL/g, (ii) a poly(alkylene ether) glycol, and (iii) a dicarboxylic acid or anhydride, to obtain a polyester comprising 1 to 90 wt. % poly(alkylene ether glycol).
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: August 26, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard Allen Hayes
  • Patent number: 6608168
    Abstract: A random polytrimethylene ether ester prepared by polycondensation of 1,3-propanediol reactant and about 10 to about 0.1 mole % of aliphatic or aromatic diacid or diester, as well as its manufacture and use thereof.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: August 19, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Howard C. Ng
  • Patent number: 6608167
    Abstract: This invention provides a new, biomass-derived glycol, bis(2-hydroxyethyl)isosorbide, which is found to be a valuable monomer for a wide variety of polymeric materials.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: August 19, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Hayes, Charles Brandenburg
  • Patent number: 6599625
    Abstract: A polyether ester elastomer comprising about 90-about 60 weight % polytrimethylene ether ester soft segment and about 10-about 40 weight % trimethylene ester hard segment, and use thereof in fibers and other shaped articles. The fibers have excellent physical properties, including superior strength and stretch recovery.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: July 29, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Marc B. Goldfinger, Hari B. Sunkara
  • Patent number: 6592913
    Abstract: A gum base comprising a crosslinked branched polyester gel prepared from the process comprising: a) providing a first pre-gel composition having carboxyl end groups; b) providing a second pre-gel composition having hydroxyl end groups; c) removing either or both of the first and second pre-gel compositions from their respective reactors; d) combining the first and second pre-gel compositions to form a mixture; and e) processing the mixture in an extruder, a continuous processor, or a container thereby providing a crosslinked branched polyester gel.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: July 15, 2003
    Assignee: Eastman Chemical Company
    Inventors: Phillip M. Cook, Michael D. Hamlin, Lanny C. Treece, George G. Mayfield, Charles R. Tomlinson
  • Patent number: 6593447
    Abstract: A polyester having a good color tone, an excellent forming property and a high resistance to cohesion of foreign substance around a melt-spinning orifice when the polyester is melt-spun, is produced by polymerizing an aromatic difunctional carboxylic acid—alkyleneglycol ester and/or oligomer thereof in the presence of a catalyst including a reaction product of (A) a Ti compound component including a Ti compound (1) of formula (I) or a Ti compound (2) produced by reacting the Ti compound (1) with an aromatic difunctional carboxylic acid of the formula (III) or anhydride thereof, with (B) a P compound component selected from P compound (3) of the formula (III). [R1=C2-C10alkyl group; p=1-3, n=2-4, R2=substituted or unsubstituted C6-C20aryl or C1-C20 alkyl group, m=1 or 2, q=0 or 1, and m+q=1 or 2].
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: July 15, 2003
    Assignee: Teijin Limited
    Inventor: Tomoyoshi Yamamoto
  • Patent number: 6579966
    Abstract: A polyester polymer includes at least one hydroxyl terminated polyoxetane block containing repeat units derived from polymerizing at least one oxetane monomer having a pendant —CH2—O—(CH2)n—Rf group wherein said Rf group is partially or fully fluorinated. A preferred process for forming said polymer is by reacting a hydroxyl terminated polyoxetane with a polycarboxylic acid under appropriate conditions to form an ester linkage and then adding and reacting that product with polyester forming reactants. The polyester polymer containing at least one polyoxetane block therein when reacted with an amino resin curative can be used as a coating on a substrate wherein the coating has dry erase properties. The coated substrate can be used as prepared or applied to yet other substrates.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 17, 2003
    Assignee: Omnova Solutions Inc.
    Inventors: Raymond J. Weinert, Robert E. Medsker, Daniel D. Woodland, Edward N. Kresge, Daniel C. Gottschalk, Joe A. Wright
  • Patent number: 6579466
    Abstract: New water-dispersible or water-soluble sulphonated polyesters with a number molecular mass lower than 20000, exhibiting a sulphur weight content of the order of 0.5 to 10% and a hydroxyl functional group content, expressed as OH equivalent/kg of polymer, higher than 0.2. They may be employed as antisoiling and/or antiredeposition agents and optionally detergents in detergent compositions, in rinsing, softening or antisoiling treatment compositions, for washing with or without pretreatment, rinsing, softening or the antisoiling treatment of textiles, especially those polyester-based.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: June 17, 2003
    Assignee: Rhodia Chimie
    Inventors: Claire David, Etienne Fleury, Yvette Girardeau
  • Patent number: 6576716
    Abstract: A method of producing sulfonated polyester compounds suitable for use as a soil releasing agent and/or textile sizing agent in which a sulfonated acid or ester is reacted with a hydroxy-containing compound to form a sulfonated hydroxy terminated ester which then undergoes a transesterification reaction with a poly(ethylene) terephthalate based polyester followed by polycondensation to form the desired sulfonated polyester compound.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: June 10, 2003
    Assignee: Rhodia, INC
    Inventor: Shiming Wo
  • Patent number: 6562457
    Abstract: A polyether ester elastomer comprising about 90-about 60 weight % polytrimethylene ether ester soft segment and about 10-about 40 weight % tetramethylene ester hard segment, and use thereof in fibers and other shaped articles. The fibers have excellent physical properties, including superior strength and stretch recovery.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: May 13, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Marc B. Goldfinger, Hari B. Sunkara
  • Patent number: 6559271
    Abstract: The invention relates to a method for producing polyesters with a reduced content of free acetaldehyde from terephthalic acid and ethylene glycol via a catalyzed polycondensation in the melt and also the use of this method. The method is based thereby on the usage of highly active polycondensation catalysts, on the deactivation of these catalysts by the addition of phosphorous-containing inhibitors and the addition of acetaldehyde-bonding substances. The entire polycondensation is thereby implemented at temperatures beneath 280° C.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: May 6, 2003
    Assignee: Inventa-Fischer GmbH & Co. KG
    Inventors: Eckehart Schaaf, Gerald Rafler, Rainer Hagen
  • Patent number: 6559272
    Abstract: Disclosed is a method for preparing polyester resins copolymerized with glycol for modification such as 1,4-cyclohexanedimethanol, in which the content of said glycol ingredient for modification ranges from 20 to 80 mol % of the total glycol content. Dicarboxylic acid such as terephthalic acid is esterified with ethylene glycol and said glycol for modification. The esterification product is subjected to polycondensation in the presence of a titanium dioxide/silicon dioxide coprecipitate catalyst, said catalyst being in the form of 4% or less strength by weight suspension in glycol. The copolyester prepared as above shows excellent transparency and color properties in addition to being produced at high efficiency.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: May 6, 2003
    Assignee: SK Chemicals Co. Ltd.
    Inventors: Jae-Young Jeon, Yoon-Hee Hong, Sung-Gi Kim