With Nonphenolic Compound Having At Least Two Hydroxyl Groups Or Salts Thereof As Reactant Patents (Class 528/209)
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Patent number: 8846848Abstract: Provided are monodisperse synthetic dendrimer calibrants for mass spectrometry. The calibrants are distinguished by their relative ease and rapidity of synthesis, comparatively low cost, long shelf life, high purity, and amenability to batch synthesis as mixtures. The latter characteristic enables parallel preparation of higher molecular weight compounds displaying useful distributions of discrete molecular weights, thereby providing multi-point mass spectrometry calibration standards. Methods of making and using said calibrants are also provided.Type: GrantFiled: February 3, 2010Date of Patent: September 30, 2014Assignee: The Administrators of the Tulane Educational FundInventor: Scott M. Grayson
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Patent number: 8703252Abstract: A multi-layer stretched film has 251 or more alternating layers which consist of first layers and second layers, wherein the first layers are made of a polyester which contains (i) 5 to 50 mol % of a naphthoic acid component as a dicarboxylic acid component and (ii) a diol having an alkylene group with 2 to 10 carbon atoms as a diol component; and the second layers are made of a thermoplastic resin having an average refractive index of 1.50 to 1.60 and differences in refractive index among a uniaxial stretching direction, a direction orthogonal to the uniaxial stretching direction and a film thickness direction of 0.05 or less before and after stretching, and the film has specific reflectance characteristics for a P polarization component and an S polarization component.Type: GrantFiled: December 15, 2010Date of Patent: April 22, 2014Assignee: Teijin LimitedInventors: Taro Oya, Mitsumasa Ono, Tetsuo Yoshida
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Publication number: 20140050692Abstract: The invention provides polymers and methods for the treatment of pain and inflammation.Type: ApplicationFiled: August 19, 2013Publication date: February 20, 2014Applicant: Rutgers, The State University of New JerseyInventors: Kathryn E. Uhrich, Roselin Rosario-Melendez
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Publication number: 20130041045Abstract: The present invention relates to dephenolic compounds, an example of which is shown below, which are functionalized, and polymers formed from the same. Polymers formed from the functionalized diphenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.Type: ApplicationFiled: September 5, 2012Publication date: February 14, 2013Applicant: BEZWADA BIOMEDICAL, LLCInventor: Rao S. Bezwada
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Patent number: 8349991Abstract: The present invention relates to amphiphilic polymers, and micelles and compositions comprising the same, and their use in a variety of biological settings, including imaging, targeting drugs, or a combination thereof for diagnostic and therapeutic purposes.Type: GrantFiled: April 17, 2006Date of Patent: January 8, 2013Assignees: Massachusetts Institute of Technology, University of Massachusetts LowellInventors: Clark K. Colton, Arthur Watterson, Rajesh Kumar, Virinder S. Parmar, Robert Fisher, Jayant Kumar
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Patent number: 8216704Abstract: A biaxially oriented laminated polyester film which has excellent dimensional stability to environmental changes such as temperature and humidity variations and excellent flatness and windability. A biaxially oriented laminated polyester film comprising a film layer B on one side of a film layer A and having a surface roughness (RaB) on the film layer B side which is 1.0 nm or more larger than the surface roughness (RaA) on the film layer A side, wherein at least one of the film layers comprises an aromatic polyester (I) composed of a glycol component and a dicarboxylic acid component containing 5 mol % or more and less than 80 mol % of a recurring unit represented by the following formula (A): wherein RA is an alkylene group having 1 to 10 carbon atoms.Type: GrantFiled: June 11, 2008Date of Patent: July 10, 2012Assignee: Teijin LimitedInventors: Eiji Kinoshita, Ieyasu Kobayashi, Mitsuo Tojo, Tomoyuki Kishino, Kazuteru Kohno
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Patent number: 8017715Abstract: An object of the present invention is to provide a polyester film having excellent dimensional stability to temperature and humidity. The present invention is a polyester containing a dicarboxylic acid component and a diol component, wherein (i) the dicarboxylic acid component contains not less than 5 mol % and less than 50 mol % of a recurring unit represented by the following formula (A) and more than 50 mol % and not more than 95 mol % of a recurring unit represented by the following formula (B): wherein RA is an alkylene group having 2 to 10 carbon atoms, wherein RB is a phenylene group or naphthalenediyl group; and (ii) the diol component contains 90 to 100 mol % of a recurring unit represented by the following formula (C): —O—RC—O—??(C) wherein RC is an alkylene group having 2 to 10 carbon atoms, and a film comprising the same.Type: GrantFiled: January 18, 2008Date of Patent: September 13, 2011Assignee: Teijin LimitedInventors: Eiji Kinoshita, Tomoyuki Kishino, Kazuteru Kohno, Tatsuya Ogawa
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Patent number: 7884173Abstract: To provide an aromatic polyester which is formed into a film having excellent heat resistance, color, mechanical properties, dimensional stability and gas barrier properties and a manufacturing process thereof; the aromatic polyester comprises a dicabroxylic acid component and a diol component, wherein (i) the dicarboxylic acid component contains 50 to 100 mol % of a recurring unit represented by the following formula (A): ?wherein R is an alkylene group having 2 to 10 carbon atoms, (ii) the aromatic polyester has an intrinsic viscosity measured at 35° C. by using a mixed solvent of P-chlorophenol and 1,1,2,2-tetrachloroethane (weight ratio of 40/60) of 0.4 to 3.0; (iii) the aromatic polyester has a content of a recurring unit represented by the following formula (D) of less than 10 mol %: —O—CH2CH2—O—CH2CH2—O—??(D) (iv) the aromatic polyester has a terminal carboxyl group concentration of 200 eq/ton or less; and (v) the aromatic polyester has an alkali metal content of 300 ppm or less.Type: GrantFiled: July 19, 2007Date of Patent: February 8, 2011Assignee: Teijin LimitedInventors: Kazuteru Kohno, Eiji Kinoshita, Tomoyuki Kishino
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Publication number: 20100016539Abstract: To provide an aromatic polyester which is formed into a film having excellent heat resistance, color, mechanical properties, dimensional stability and gas barrier properties and a manufacturing process thereof; the aromatic polyester comprises a dicarboxylic acid component and a diol component, wherein (i) the dicarboxylic acid component contains 50 to 100 mol % of a recurring unit represented by the following formula (A): wherein R is an alkylene group having 2 to 10 carbon atoms, (ii) the aromatic polyester has an intrinsic viscosity measured at 35° C. by using a mixed solvent of P-chlorophenol and 1,1,2,2-tetrachloroethane (weight ratio of 40/60) of 0.4 to 3.0; (iii) the aromatic polyester has a content of a recurring unit represented by the following formula (D) of less than 10 mol %: —O—CH2CH2—O—CH2CH2—O—??(D) (iv) the aromatic polyester has a terminal carboxyl group concentration of 200 eq/ton or less; and (v) the aromatic polyester has an alkali metal content of 300 ppm or less.Type: ApplicationFiled: July 19, 2007Publication date: January 21, 2010Applicant: TEIJIN LIMITEDInventors: Kazuteru Kohno, Eiji Kinoshita, Tomoyuki Kishino
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Patent number: 7511081Abstract: The present invention relates to a recycling method of a mixed waste of polyester and polyamide (hereinafter, referred to as “mixed waste”) in which polyesters including polyethylene terephthalate and polyamides are inseparable from one another. In accordance with the recycling method of the present invention, it is possible to prepare a solid block polymer having an acid value of 1 to 150 mgKOH/g, a weight average molecular weight of 3,000 to 50,000 and a softening point of 10 to 150° C., or a liquid polyester-amide block polymer composition having good compatibility, solubility and dispersibility. In addition, the polymer having an acid value of more than 20 mgKOH/g is reacted with a basic compound to form a neutralized salt which is then used to prepare a water-soluble polyester-amide block polymer composition.Type: GrantFiled: March 24, 2005Date of Patent: March 31, 2009Inventors: Do-Gyun Kim, Hyo-Sung Kim
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Publication number: 20090036600Abstract: The present invention describes a polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, a process for the preparation thereof, the use of an aromatic diol having a single benzene ring for the preparation of polyhydroxycarboxylic acid, in particular polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, as well as a method of preparing injection-molded goods or blown film, polymer blends, composite materials or nanocomposite materials using said polyhdroxycarboxylic acid.Type: ApplicationFiled: September 28, 2005Publication date: February 5, 2009Inventors: Nils Dan Anders Södergard, Erik Mikael Stolt
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Publication number: 20080119631Abstract: A thermoplastic composition is disclosed, comprising: a polymer component comprising a polyestercarbonate copolymer comprising ester units and carbonate units; a polycarbonate copolymer comprising branched carbonate units and carbonate units; and 0.01 to 10 wt. %, based on the total weight of the polymer component, of a polymeric compound comprising at least two epoxy groups, wherein the polymeric compound has a weight average molecular weight of 1,500 to 18,000; wherein a test article having a thickness of 3.2 mm and molded from the thermoplastic composition retains more ductility after aging at 134° C. and 100% humidity for 48 hours than an article having a thickness of 3.2 mm and molded from the same thermoplastic composition without the polymeric compound comprising at least two epoxy groups, each measured in accordance with ASTM D3763-02.Type: ApplicationFiled: August 27, 2007Publication date: May 22, 2008Applicant: GENERAL ELECTRIC COMPANYInventor: Brian D. Mullen
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Patent number: 6624258Abstract: An agent for imparting flame retardancy to a thermoplastic resin contains a polyhydric phenol such as a tannin compound as an effective component. The thermal stability of the thermoplastic resin can be improved so as to elevate the decomposition temperature of the thermoplastic resin if a small amount of the flame retardancy imparting agent is added to the thermoplastic resin so as to suppress the combustibility of the thermoplastic resin.Type: GrantFiled: August 30, 2002Date of Patent: September 23, 2003Assignee: Tohoku Munekata Co., Ltd.Inventor: Susumu Nikkeshi
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Patent number: 6482915Abstract: The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxycarboxylic acid, etc.; (II) an aromatic dicarboxylic acid and an alicyclic dicarboxylic acid; (III) an aromatic diol, an alicyclic diol, an aliphatic diol, etc.; and (IV) an aromatic hydroxylamine, an aromatic diamine, etc. in the presence of an acylating agent, wherein the starting materials are charged so as to satisfy the following equations (1) to (4): 0.0015≦((A)−(B))/((A)+(B))≦0.006 (1); 1.01≦(D)/(C)≦1.08 (2); 0≦(E)≦40 (3); and (D)/(C)≧−0.002 ×(E)+1.Type: GrantFiled: July 19, 2001Date of Patent: November 19, 2002Assignee: Polyplastics Co., Ltd.Inventor: Toshiaki Yokota
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Patent number: 6172127Abstract: The invention herein relates to a process of preparing a novel polyimide foam having superior heat-resistance, flame retardancy, homogeneous size and distribution of cells, and low density, wherein a polyimide precursor in a granular form is prepared by means of using heterocyclic amine as catalyst and then foaming. According to the present invention, the preparing process of a polyimide foam comprises reacting aromatic carboxylic acid or the anhydrides thereof with an excess of aliphatic univalent alcohol to yield an aromatic ester solution. To the aromatic ester solution, divalent amines or the mixture thereof were added in the equivalent amount of said carboxylic acid or the anhydrides thereof in addition to a catalyst and surfactant to yield a polyimide. Then, the precursor in a granular form mixture was imidized while foaming by means of pre-heating and then heating in a microwave oven, after which was cured at a high temperature.Type: GrantFiled: September 11, 1998Date of Patent: January 9, 2001Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil Yeong Choi, Jae Heung Lee, Sung Goo Lee, Mi Hie Yi, Seung Su Kim
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Patent number: 5973072Abstract: The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a phenolic urethane reactive diluent. The phenolic urethane reactive diluent may be made from a phenolic ester alcohol having at least one aliphatic hydroxyl group.Type: GrantFiled: March 21, 1996Date of Patent: October 26, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Frank N. Jones, Vijay Swarup, Ramachandran P. Subrayan, Suru Zhang
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Patent number: 5744125Abstract: Disclosed are cosmetic melanins of different colors produced by procedures involving oxidative polymerization of monomeric precursors of melanin and/or co-monomers that enhance substantivity or adherence of the melanins to the skin and hair. Also disclosed are methods for preparing cosmetic melanins and methods for using these compositions topically to produce a natural-appearing tan and to prevent damage to skin caused by UV exposure.Type: GrantFiled: February 23, 1995Date of Patent: April 28, 1998Assignee: Yale UniversityInventors: John M. Pawelek, James T. Platt
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Patent number: 5631330Abstract: Non liquid-crystalline esterphenol-capped liquid polymer and polyol compositions in combination with an amino crosslinking agent endow coating compositions containing them with the ability of providing films having superior properties. The esterphenol-capped polymers and polyols can be prepared by direct esterification of hydroxybenzoic acid without its decarboxylation.Type: GrantFiled: June 7, 1995Date of Patent: May 20, 1997Assignee: Exxon Chemical Patents, Inc.Inventors: Albert I. Yezrielev, William E. Wellman, Ralph M. Kowalik, George A. Knudsen, Michael G. Romanelli
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Patent number: 5464926Abstract: Oligomeric monomers are produced by reaction of a bisphenol compound with ther a dihalobenzophenone or a (2,2)bis(4-halophenyl)hexafluoropropane and any other activated halogen containing aromatic compounds in the presence of a base and an appropriate solvent. The resulting oligomeric product, a dialkaline bisphenate terminated salt, is then reacted with 4-nitrophthalonitrile to form an oligomer-based phthalonitrile. These oligomers, in the presence or absence of an curing agent, may then be heated to form high temperature thermosetting polymers. These polymers can potentially be used as advanced materials for composites, as adhesives, and for microelectronic applications.Type: GrantFiled: July 27, 1994Date of Patent: November 7, 1995Assignee: The United States of America as represented by the Secretary of the NavyInventor: Teddy M. Keller
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Patent number: 5352760Abstract: Oligomeric monomers are produced by reaction of a bisphenol compound with ther a dihalobenzophenone or a (2, 2) bis (4-halophenyl) hexafluoropropane and any other activated halogen containing aromatic compounds in the presence of a base and an appropriate solvent. The resulting oligomeric product, a dialkaline bisphenate terminated salt, is then reacted with 4-nitrophthalonitrile to form an oligomer-based phthalonitrile. These oligomers, in the presence or absence of an curing agent, may then be heated to form high temperature thermosetting polymers. These polymers can potentially be used as advanced materials for composites, as adhesives, and for microelectronic applications.Type: GrantFiled: February 18, 1993Date of Patent: October 4, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventor: Teddy M. Keller
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Patent number: 5338828Abstract: Novel cyclic imino ether compositions containing one or more mesogenic moieties, when polymerized, result in products having improved properties.Type: GrantFiled: September 10, 1993Date of Patent: August 16, 1994Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5144055Abstract: Liquid crystalline bis-chlorocarbonic acid esters are 4-hydroxybenzoic acid-(4'-hydroxyphenyl) esters corresponding to the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of one another, hydrogen, a halogen atom or a C.sub.1 to C.sub.6 alkyl group. Preparation of (I) and liquid crystalline N-alkyl polyurethanes and polycarbonates prepared from (I) are other invention embodiments.Type: GrantFiled: June 26, 1990Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Hanns P. Muller, Bernhard Jansen, Wolfgang Calaminus, Rolf Dhein
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Patent number: 4980441Abstract: Liquid crystalline bis-chlorocarbonic acid esters are 4-hydroxybenzoic acid-(4'-hydroxyphenyl) esters corresponding to the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of one another, hydrogen, a halogen atom or a C.sub.1 to C.sub.6 alkyl group. Preparation of (I) and liquid crystalline N-alkyl polyurethanes and polycarbonates prepared form (I) are other invention embodiments.Type: GrantFiled: February 27, 1989Date of Patent: December 25, 1990Assignee: Bayer AktiengesellschaftInventors: Hanns P. Muller, Bernhard Jansen, Wolfgang Calaminus, Rolf Dhein
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Patent number: 4841012Abstract: Polyester resins useful for forming containers having improved resistance to gas permeability comprising the reaction product of(A) a dicarboxylic acid corresponding to the structure ##STR1## and (B) a diol selected from the group consisting of ethylene glycol, 1,4-butane diol and 1,4-cyclohexanedimethanol.Type: GrantFiled: August 25, 1988Date of Patent: June 20, 1989Assignee: Eastman Kodak CompanyInventor: Robert B. Barbee
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Patent number: 4792598Abstract: New poly-dicarboxylic acid anhydrides, which are suitable as bio-degradable matrix materials for the controlled release of medicinal agents in humans. The anhydrides have the following formula: ##STR1## where ##STR2## where n=an integer of two or more, for the first three radicals, or one or more for the fourth.Type: GrantFiled: September 29, 1986Date of Patent: December 20, 1988Assignee: Sandoz Ltd.Inventor: Gerd Ziegast
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Patent number: 4608428Abstract: Copolymers of an (ethylenedioxy)bis benzoate, an alkylene diol and a (2-alkenyl or alkyl) succinic anhydride, as well as surgical devices formed therefrom; especially, flexible monofilament surgical sutures having unique handling and knot-tying characteristics.Type: GrantFiled: September 10, 1984Date of Patent: August 26, 1986Assignee: Ethicon, Inc.Inventors: Shalaby W. Shalaby, Dennis D. Jamiolkowski
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Patent number: 4587312Abstract: Sulfone-ester polymers containing pendent ethynyl groups and a direct and multi-step process for preparing same are disclosed. The multi-step process involves the conversion of a pendent bromo group to the ethynyl group while the direct route involves reacting hydroxy-terminated sulfone oligomer or polymers with a stoichiometric amount of 5-(4-ethynylphenoxy)isophthaloyl chloride. The 5-(4-ethynylphenoxy)isophthaloyl chloride and process for preparing same are also disclosed.Type: GrantFiled: May 23, 1984Date of Patent: May 6, 1986Assignee: The United States of America as represented by the National Aeronautics and Space AdministrationInventors: Paul M. Hergenrother, Brian J. Jensen
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Patent number: 4581438Abstract: A novel, substantially linear aromatic polyester comprising 6,6'-(ethylenedioxy)di-2-naphthoic acid as a main acid component and an aliphatic glycol having 2 to 10 carbon atoms in the main chain of the glycol as a main glycol component. The aromatic polyester is prepared by condensing an ethylene glycol diester of 6,6'-(ethylenedioxy)di-2-naphthoic acid, or a mixture of a major proportion of said naphthoate with a dicarboxylic acid, a diol, a hydroxycarboxylic acid or an ester-forming derivative thereof, at an elevated temperature. The aromatic polyester has excellent mechanical properties such as strength and Young's modulus.Type: GrantFiled: December 17, 1984Date of Patent: April 8, 1986Assignee: Teijin LimitedInventors: Hiroo Inata, Hiroyuki Umetani, Shunichi Matsumura
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Patent number: 4574148Abstract: The present invention provides polyester resins useful for forming containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises about 5 to 95 mole percent of a first diacid selected from [thiobis(p-phenyleneoxy)]diacetic acid, [sulfonylbis(p-phenyleneoxy)]diacetic acid, and mixtures thereof, and about 5 to about 95 mole percent of naphthalene dicarboxylic acid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.Type: GrantFiled: June 21, 1985Date of Patent: March 4, 1986Assignee: Eastman Kodak CompanyInventors: Thomas H. Wicker, Jr., Robert B. Barbee
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Patent number: 4552948Abstract: The present invention provides polyester resins useful for forming containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises about 5 to 50 mole percent of a first diacid selected from 1,4-phenylenedioxy diacetic acid, 1,3-phenylenedioxy diacetic acid, 1,2-phenylenedioxy diacetic acid, and mixtures thereof, and about 50 to about 95 mole percent of terephthalic acid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.Type: GrantFiled: March 29, 1985Date of Patent: November 12, 1985Assignee: Eastman Kodak CompanyInventors: Robert B. Barbee, Thomas H. Wicker, Jr.
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Patent number: 4518763Abstract: Disclosed are polyesters prepared from hetero-atom-containing dicarboxylic acids and hetero-atom-containing diols. These polyesters have low permeability to oxygen and carbon dioxide and are useful in packaging applications such as for food and beverages.Type: GrantFiled: May 21, 1984Date of Patent: May 21, 1985Assignee: Eastman Kodak CompanyInventors: Robert B. Barbee, Burns Davis
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Patent number: 4511706Abstract: Copolymers of an (ethylenedioxy)bis benzoate, an alkylene diol and a (2-alkenyl or alkyl) succinic anhydride, as well as surgical devices formed therefrom; especially, flexible monofilament surgical sutures having unique handling and knot-tying characteristics.Type: GrantFiled: July 26, 1982Date of Patent: April 16, 1985Assignee: Ethicon, Inc.Inventors: Shalaby W. Shalaby, Dennis D. Jamiolkowski
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Patent number: 4510295Abstract: Absorbable, radiation sterilizable polymers, useful as sutures and other medical and surgical devices, are produced from polyesters of substituted benzoic acid, dihydric alcohols, and glycolide and/or lactide.Type: GrantFiled: January 20, 1983Date of Patent: April 9, 1985Assignee: Ethicon, Inc.Inventors: Rao S. Bezwada, Shalaby W. Shalaby, Dennis D. Jamiolkowski
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Patent number: 4452965Abstract: This invention relates to random elastomeric copolyesters containing units of low molecular weight glycol, poly(alkylene oxide)glycol, dimer acid and 1,2 bis(4-carbomethoxy phenoxy)ethane.Type: GrantFiled: July 29, 1983Date of Patent: June 5, 1984Assignee: The Goodyear Tire & Rubber CompanyInventor: William C. T. Tung
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Patent number: 4440922Abstract: The present invention provides containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises about 5 to 100 mole percent of a first diacid selected from 1,4-phenylenedioxy diacetic acid, 1,3-phenylenedioxy diacetic acid, 1,2-phenylenedioxy diacetic acid, and mixtures thereof, and 0 to about 95 mole percent of terephthalic acid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.Type: GrantFiled: April 13, 1983Date of Patent: April 3, 1984Assignee: Eastman Kodak Co.Inventors: Robert B. Barbee, Thomas H. Wicker, Jr.
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Patent number: 4433132Abstract: A class of polyesters comprising recurring units having certain bis(trifluoromethyl)biphenylene radicals is disclosed. The polyesters exhibit favorable solubility properties in certain organic solvents so as to facilitate the production of the polyesters via polycondensation methods to film- and fiber-forming molecular weights. Monomeric compounds comprising a bis(trifluoromethyl)biphenylene radical and useful for the production of the polyesters are also disclosed.Type: GrantFiled: September 2, 1982Date of Patent: February 21, 1984Assignee: Polaroid CorporationInventors: Howard G. Rogers, Russell A. Gaudiana, Richard A. Minns
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Patent number: 4426512Abstract: The present invention provides containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises about 5 to 60 mole percent of a first diacid selected from [thiobis(p-phenyleneoxy)]diacetic acid, [sulfonylbis(p-phenyleneoxy)]diacetic acid, and mixtures thereof, and about 40 to 95 mole percent of terephthalic acid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.Type: GrantFiled: June 9, 1983Date of Patent: January 17, 1984Assignee: Eastman Kodak CompanyInventors: Robert B. Barbee, Thomas H. Wicker, Jr.
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Patent number: 4414381Abstract: A melt-processable aromatic polyester anhydride characterized in that from 5 to 80% of the units linking the reactant residues in the polymer chain have the formula: ##STR1## the remaining linkages between the residues of the reactants being of the formula: ##STR2## optionally together with linkages of the formula: ##STR3## substantially all of said remaining linkages being disposed in coaxial or parallel and oppositely directed manner with respect to the residues to which they are linked, the polyester anhydride having a solubility of less than 5% by weight in dimethyl sulphoxide at room temperature.Type: GrantFiled: December 7, 1981Date of Patent: November 8, 1983Assignee: Imperial Chemical Industries PLCInventors: Brian P. Griffin, William A. MacDonald
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Patent number: 4395513Abstract: An improved high performance thermally stable polymer is provided. Such polymer is composed primarily of recurring 6-oxy-2-naphthoyl moieties and is preferably a homopolymer of 6-oxy-2-naphthoyl moieties, i.e. poly(6-oxy-2-naphthoate). It is particularly suited for use in the formation of plasma spray coatings and compression or impact molded articles, and has been found to offer a thermal stability which is superior to that of poly(4-oxybenzoate). Small amounts (as described) of other ester-forming moieties and/or amide-forming moieties optionally may also be present.Type: GrantFiled: April 8, 1982Date of Patent: July 26, 1983Assignee: Celanese CorporationInventor: Gordon W. Calundann
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Patent number: 4338247Abstract: Disclosed are highly stable copolyesters having inherent viscosities of at least 0.4 and containing in copolymerized form from about 0.3 to about 5.0% by weight of one or more of the stabilizing moieties having the general formula ##STR1## where R and R.sub.1 are each a chemical bond or an alkylene group of 1-6 carbons; R.sub.2 is alkyl, cycloalkyl, or aryl; R.sub.3 represents 1-5 groups each independently selected from H, Cl, F, alkyl, cycloalkyl, alkoxy, aryl or aryloxy; wherein all of the above alkyl and alkylene moieties comprising or being part of the R.sub.2 or R.sub.3 groups contain from 1-8 carbons; and wherein all of the above alkyl, alkylene, aryl and cycloalkyl moieties may be substituted with up to three substituents selected from halogen, alkyl of 1-8 carbons, alkoxy of 1-8 carbons, aryl, cycloalkyl and CN.Type: GrantFiled: June 2, 1980Date of Patent: July 6, 1982Assignee: Eastman Kodak CompanyInventors: Joseph S. Zannucci, Bobby J. Sublett
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Patent number: 4288607Abstract: The invention relates to halogenous polyesters with the recurrent general formula ##STR1## in which at least part of the R's, e.g.Type: GrantFiled: March 12, 1979Date of Patent: September 8, 1981Assignee: Dynamit Nobel AktiengesellschaftInventors: Gerhard Bier, Dagmar Kottek, Egon N. Petersen, Hermann Richtzenhain, Norbert Vollkommer
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Patent number: 4239882Abstract: A polyester is produced in an improved process by esterification or interesterification of an aromatic dicarboxylic acid or an alkyl ester thereof with 1,4-butanediol followed by polycondensation of the resulting ester characterized in reusing the 1,4-dibutanediol mixture distilled in the polycondensation step without purification as a starting material for production of more polyester.Type: GrantFiled: September 3, 1975Date of Patent: December 16, 1980Assignee: Mitsubishi Chemical Industries Ltd.Inventors: Tsuneo Kimura, Katsuhisa Kohyama, Takehiro Okada, Katsuyuki Sakata
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Patent number: 4152511Abstract: The invention relates to halogenous polyesters with the recurrent general formula ##STR1## in which at least part of the R's, e.g.Type: GrantFiled: October 19, 1976Date of Patent: May 1, 1979Assignee: Dynamit Nobel AktiengesellschaftInventors: Gerhard Bier, Dagmar Kottek, Egon N. Petersen, Hermann Richtzenhain, Norbert Vollkommer