Aryl-containing Carboxylic Acid Or Derivative Of An Aryl-containing Dicarboxylic Acid Patents (Class 528/308)
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Patent number: 6699931Abstract: 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: GrantFiled: March 8, 2002Date of Patent: March 2, 2004Assignee: Eastman Chemical CompanyInventors: Thauming Kuo, John David Moncier, Allan Scott Jones, David Logan Murray, Mahendra Kumar Sharma
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Patent number: 6696521Abstract: 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: GrantFiled: July 29, 2002Date of Patent: February 24, 2004Assignee: Arco Chemical Technology, LPInventors: Lau S. Yang, Paul Malcolm Puckett
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Patent number: 6686051Abstract: 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: GrantFiled: October 27, 2000Date of Patent: February 3, 2004Assignee: OMNOVA Solutions Inc.Inventors: Raymond J. Weinert, Robert E. Medsker, Daniel D. Woodland, Edward N. Kresge, Daniel C. Gottschalk, Joe A. Wright
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Patent number: 6686401Abstract: 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: GrantFiled: May 16, 2002Date of Patent: February 3, 2004Assignee: Great Lakes Chemical (Europe) GmbHInventors: Fiorenzo Renzi, Andrea Bendandi, Roberto Forestieri
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Patent number: 6683132Abstract: 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: GrantFiled: December 19, 2002Date of Patent: January 27, 2004Assignee: Eastman Chemical CompanyInventors: Martin Frederick Schick, Amy Lee Bolton, Thauming Kuo
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Patent number: 6670033Abstract: 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: GrantFiled: November 27, 2001Date of Patent: December 30, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Michael A. Hubbard, Michael Wohlers, Helmut B. Witteler, Edward G. Zey, George Kvakovszky, Thomas H. Shockley, Larry F. Charbonneau, Norbert Kohle, Jochen Rieth
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Patent number: 6670429Abstract: 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: GrantFiled: December 31, 2002Date of Patent: December 30, 2003Assignee: Imperial Chemical Industries PLCInventors: Eric Appelman, Jeffrey Thomas Carter
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Patent number: 6667383Abstract: 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: GrantFiled: October 4, 2002Date of Patent: December 23, 2003Assignee: Mitsubishi Chemical CorporationInventors: Yoshihiro Fujimori, Masahiro Nukui, Yutaka Yatsugi, Kenichi Matsui
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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: 6663928Abstract: 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: GrantFiled: January 25, 2002Date of Patent: December 16, 2003Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideki Ito, Norimi Tabota, Hiroshi Nagano
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Patent number: 6664363Abstract: 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: GrantFiled: January 9, 2002Date of Patent: December 16, 2003Assignee: Stepan CompanyInventor: James A. Faunce
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Patent number: 6663977Abstract: 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: GrantFiled: March 5, 2001Date of Patent: December 16, 2003Assignee: E.I. du Pont de Numours and CompanyInventors: Joseph V. Kurian, Diane M. Hahm, Benjamin A. Smillie
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Patent number: 6660398Abstract: 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: GrantFiled: August 9, 2000Date of Patent: December 9, 2003Assignee: UCB, S.A.Inventors: Luc Moens, Kris Buysens, Daniel Maetens
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Patent number: 6656577Abstract: 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: GrantFiled: June 14, 2002Date of Patent: December 2, 2003Assignee: E. I. du Pont de Nemours & CompanyInventors: Douglas J. Adelman, Larry F. Charbonneau, Sophie Ung
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Patent number: 6657017Abstract: 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: GrantFiled: July 23, 2002Date of Patent: December 2, 2003Assignee: Rhodia IncInventors: Shiming Wo, Jeanne Chang, Stephen Kauder
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Polymeric pigment dispersant utilized as a grind resin for pigments and method of preparing the same
Patent number: 6657002Abstract: 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: GrantFiled: December 22, 2000Date of Patent: December 2, 2003Assignee: BASF CorporationInventors: Swaminathan Ramesh, JoAnn Lanza -
Patent number: 6656578Abstract: 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: GrantFiled: September 11, 2002Date of Patent: December 2, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshitaka Ohbe, Kazunori Akiyoshi, Shino Moriyama
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Patent number: 6653440Abstract: 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: GrantFiled: November 6, 2002Date of Patent: November 25, 2003Assignee: Mitsubishi Gas Chemical CompanyInventors: Takeshi Hirokane, Tsuyoshi Ikeda, Shojiro Kuwahara
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Patent number: 6652979Abstract: 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: GrantFiled: August 2, 2001Date of Patent: November 25, 2003Assignee: Toray Industries, Inc.Inventors: Kohzo Takahashi, Ryosuke Matsui, Masahiro Kimura
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Patent number: 6649731Abstract: 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: GrantFiled: April 18, 2002Date of Patent: November 18, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Hideshi Hori, Fujito Ehara, Akiyoshi Shimizu, Nobumasa Mukai, Shoji Hiraoka
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Silicone coated film with back side slip control coating and method of controlling slip of such film
Patent number: 6645615Abstract: 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: GrantFiled: January 9, 2002Date of Patent: November 11, 2003Assignee: Mitsubishi Polyester Film, LLCInventors: John M. Heberger, Kenneth J. Muschelewicz -
Patent number: 6645589Abstract: 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: GrantFiled: September 12, 2001Date of Patent: November 11, 2003Assignee: Toyo Boseki Kabushiki KaishaInventors: Shingo Fujii, Hideki Igushi, Hiroshi Nagano
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Patent number: 6645619Abstract: 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: GrantFiled: June 12, 2002Date of Patent: November 11, 2003Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Tetsuko Takahashi, Shinichi Okajima, Katsuhiro Fujimoto, Kenji Imura
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Publication number: 20030208030Abstract: 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: ApplicationFiled: May 28, 2003Publication date: November 6, 2003Inventors: Shuji Yamaguchi, Hidekazu Nakamoto, Susumu Harada, Norifumi Maeda
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Patent number: 6641900Abstract: 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: GrantFiled: November 28, 2001Date of Patent: November 4, 2003Assignee: 3M Innovative Properties CompanyInventors: Timothy J. Hebrink, William W. Merrill, Carl A. Stover
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Patent number: 6639017Abstract: 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: GrantFiled: August 28, 1997Date of Patent: October 28, 2003Assignee: Clariant GmbHInventors: Sebastian Hörold, Hans-Peter Schmitz
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Patent number: 6639047Abstract: 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: GrantFiled: June 11, 2002Date of Patent: October 28, 2003Assignee: Boo Yoon Tech, Inc.Inventor: Yeo Saeng Yoon
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Patent number: 6639009Abstract: 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: GrantFiled: July 15, 2002Date of Patent: October 28, 2003Assignee: Cyclis CorporationInventors: Steven J. Winckler, Tohru Takekoshi
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Patent number: 6630564Abstract: 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: GrantFiled: December 21, 2001Date of Patent: October 7, 2003Assignee: Nan Ya Plastics CorporationInventor: Zo-Chun Jen
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Patent number: 6630601Abstract: 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: GrantFiled: August 17, 2000Date of Patent: October 7, 2003Assignee: Aies Company LimitedInventors: Shuji Inada, Kikuchi Sato
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Patent number: 6627303Abstract: 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: GrantFiled: January 17, 2003Date of Patent: September 30, 2003Assignee: General Electric CompanyInventors: Robert R. Gallucci, Xiangyang Li, Paul D. Sybert
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Patent number: 6623853Abstract: 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: GrantFiled: March 8, 2001Date of Patent: September 23, 2003Assignee: Wellman, Inc.Inventors: James Burch Branum, Keith James Carnes, Billy Mack Humelsine, Carl Steven Nichols
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Patent number: 6620362Abstract: 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: GrantFiled: June 14, 2002Date of Patent: September 16, 2003Assignee: Nan Ya Plastics CorporationInventor: Zo-Chun Jen
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Patent number: 6617006Abstract: 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: GrantFiled: September 7, 2001Date of Patent: September 9, 2003Assignee: Teijin LimitedInventors: Koji Kubo, Masahiko Kosuge, Shunsuke Kubota, Kinji Hasegawa, Nobuo Minobe, Kimihiko Sato
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Patent number: 6613259Abstract: 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: GrantFiled: January 22, 2001Date of Patent: September 2, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Koji Takahashi, Koji Nakamachi, Hiroji Niimi, Shoji Hiraoka, Masayuki Sakai, Hitoshi Tsuboi
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Patent number: 6610813Abstract: 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: GrantFiled: August 13, 2002Date of Patent: August 26, 2003Assignee: Corning IncorporatedInventors: Keith A. Horn, Thomas M. Leslie, James V. Suggs, Mingqian He
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Patent number: 6610378Abstract: 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: GrantFiled: October 1, 1996Date of Patent: August 26, 2003Assignee: Toray Industries, Inc.Inventors: Masahiro Kimura, Kohzo Takahashi, Koichi Abe
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Patent number: 6610796Abstract: 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: GrantFiled: May 10, 2002Date of Patent: August 26, 2003Assignee: Kolon Industries Inc.Inventors: Young-Ik Seo, Chung-Seock Kang, Tae-Gun Choi, Jun-Myoung Song
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Patent number: 6610795Abstract: 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: GrantFiled: August 10, 2001Date of Patent: August 26, 2003Assignee: E. I. du Pont de Nemours and CompanyInventor: Richard Allen Hayes
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Patent number: 6608168Abstract: 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: GrantFiled: August 9, 2002Date of Patent: August 19, 2003Assignee: E. I. du Pont de Nemours and CompanyInventor: Howard C. Ng
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Patent number: 6608167Abstract: 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: GrantFiled: March 26, 2002Date of Patent: August 19, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Hayes, Charles Brandenburg
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Patent number: 6599625Abstract: 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: GrantFiled: October 31, 2001Date of Patent: July 29, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Hari B. Sunkara
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Patent number: 6592913Abstract: 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: GrantFiled: July 30, 2002Date of Patent: July 15, 2003Assignee: Eastman Chemical CompanyInventors: Phillip M. Cook, Michael D. Hamlin, Lanny C. Treece, George G. Mayfield, Charles R. Tomlinson
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Patent number: 6593447Abstract: 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: GrantFiled: February 23, 2001Date of Patent: July 15, 2003Assignee: Teijin LimitedInventor: Tomoyoshi Yamamoto
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Patent number: 6579966Abstract: 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: GrantFiled: November 14, 2002Date of Patent: June 17, 2003Assignee: Omnova Solutions Inc.Inventors: Raymond J. Weinert, Robert E. Medsker, Daniel D. Woodland, Edward N. Kresge, Daniel C. Gottschalk, Joe A. Wright
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Patent number: 6579466Abstract: 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: GrantFiled: November 20, 1997Date of Patent: June 17, 2003Assignee: Rhodia ChimieInventors: Claire David, Etienne Fleury, Yvette Girardeau
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Patent number: 6576716Abstract: 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: GrantFiled: November 30, 2000Date of Patent: June 10, 2003Assignee: Rhodia, INCInventor: Shiming Wo
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Patent number: 6562457Abstract: 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: GrantFiled: October 31, 2001Date of Patent: May 13, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Hari B. Sunkara
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Patent number: 6559271Abstract: 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: GrantFiled: September 13, 2001Date of Patent: May 6, 2003Assignee: Inventa-Fischer GmbH & Co. KGInventors: Eckehart Schaaf, Gerald Rafler, Rainer Hagen
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Patent number: 6559272Abstract: 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: GrantFiled: January 24, 2002Date of Patent: May 6, 2003Assignee: SK Chemicals Co. Ltd.Inventors: Jae-Young Jeon, Yoon-Hee Hong, Sung-Gi Kim