With Reactant Having Halo-c(=o)-halo, Halo-c(=o)-o-, Or -o-c(=o)-o- Group Patents (Class 528/196)
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Patent number: 7122614Abstract: The present invention provides an aromatic polycarbonate resin product for producing optical disc substrates of high reliability at high molding yield. The aromatic polycarbonate resin for optical disc substrates is produced by adding 0.015 to 0.05 parts by mass of a C14–C30 fatty acid monoglyceride to 100 parts by mass of an aromatic polycarbonate resin, adding water having an electric conductivity, as measured at 25° C., of 1 ?S/cm or less to the resin, the water content of the resin being controlled to 0.05 to 0.3 mass %, melt-extruding the water-added resin, cooling, and cutting to form pellets, the resin having a viscosity average molecular weight (Mv) of 10,000 to 20,000.Type: GrantFiled: February 14, 2003Date of Patent: October 17, 2006Assignee: Idemitsu Kosan Co., ltd.Inventor: Munehiro Chosa
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Patent number: 7118799Abstract: This invention relates to thermoplastic article having one or more decorative materials embedded therein which is obtained by applying heat and pressure to one or more laminates wherein at least one of said laminates comprises, in order, (1) an upper sheet material; (2) one or more decorative materials; and (3) a lower sheet material; wherein the upper and lower sheet materials are formed from a polyester/aromatic polycarbonate blend.Type: GrantFiled: November 22, 2002Date of Patent: October 10, 2006Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, Robert William Seymour
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Patent number: 7118806Abstract: A plastic molded article laminated a layer with a photochromic property and/or a layer with a polarization property on at least one side of a base material, said base material being a polycarbonate having a photoelastic constant of 55×10?12 m2/N or below.Type: GrantFiled: June 1, 2001Date of Patent: October 10, 2006Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Chiharu Nishizawa, Kenji Kouno
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Patent number: 7115700Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4?-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.Type: GrantFiled: May 19, 2005Date of Patent: October 3, 2006Assignee: General Electric CompanyInventors: James Anthony Cella, Jan Henk Kamps, Jan Pleun Lens, Kathryn Lynn Longley, Patrick Joseph McCloskey, Narayan Ramesh, Warren William Reilly, Paul Michael Smigelski, Jr., Marc Brian Wisnudel
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Patent number: 7112645Abstract: A polycarbonate composition comprises chloride, sulfate, phosphate or a combination of two or more of the foregoing ionic species in an amount of zero to about 100 parts per billion based on the total weight of the composition; and phenol, carbonic diester, aromatic dihydroxy compound or combination of two or more of the foregoing organic compounds in an amount of zero to about 500 parts per million by weight based on the total weight of the composition; wherein the polycarbonate has a weight average molecular weight of about 40,000 to about 90,000 dalton as determined by gel permeation chromatography using polystyrene standards and a melt volume rate of about 1 to about 35 cm3/10 minutes when measured at about 300° C. with a force of about 1.2 kilograms.Type: GrantFiled: March 19, 2004Date of Patent: September 26, 2006Assignee: General Electric CompanyInventors: Carlos Abad, Jose Maria Alonso Franco, Hiromi Ishida, Miguel Angel Salomon, Tomoaki Shimoda
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Patent number: 7112702Abstract: A commercial scale continuous process for the production of a bisphenol comprising reacting a phenol and a ketone in the presence of a modified ion exchange resin catalyst, wherein said modified ion exchange resin comprises a crosslinked gellular acid functionalized polystyrene resin modified by neutralization of with a mercapto promoter.Type: GrantFiled: December 12, 2002Date of Patent: September 26, 2006Assignee: General Electric CompanyInventors: Brian Carvill, Katherine Glasgow, Gurram Kishan, Ramesh Krishnamurti, Nilesh Kumar Parkash Kukalyekar, G. V. Ramanarayanan
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Patent number: 7112644Abstract: The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.Type: GrantFiled: January 21, 2003Date of Patent: September 26, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hironobu Morishita, Hiroyuki Tamura, Yasushi Hamada
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Patent number: 7112647Abstract: An object of the present invention is to provide a fluorinated polymer of adequate molecular weight with excellent transparency in a wavelength range from visible to near infrared, and to also provide a method of producing such a polymer. The present invention provides a fluorinated polymer comprising a structure represented by a formula (1) as a structural unit, as well as a method of producing this polymer using a corresponding tetrafluoroxylylenediamine or a tetrafluoroxylylene glycol as a raw material.Type: GrantFiled: December 25, 2002Date of Patent: September 26, 2006Assignee: Showa Denko K.K.Inventors: Isamu Taguchi, Ryuji Monden, Nobutoshi Sasaki, Hideo Miyata, Kohei Morikawa
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Patent number: 7105231Abstract: A substrate having a barrier comprising a raised rim to prevent an in-mold coating from flowing into a gate pin assembly or substrate injection inlet area wherein a substrate is injected into the mold cavity. The barrier prevents cross contamination between a substrate resin orifice and the in-mold coating. A method for isolating an injection inlet area or gate pin assembly from in-mold coatings is also described.Type: GrantFiled: May 16, 2002Date of Patent: September 12, 2006Assignee: OMNOVA Solutions Inc.Inventors: Douglas S. McBain, John A. Thompson, Elliott J. Straus
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Patent number: 7105626Abstract: Alkyl ester end-capped polycarbonates have improved release properties and may be produced by a method comprising the step of combining a polycarbonate having free terminal OH groups with an end-capping reagent comprising a symmetrical activated carbonate and an alkyl ester, whereby the end-capping reagent reacts with at least some of the free hydroxyl end groups of the polycarbonate to produce an end-capped polycarbonate comprising optionally substituted aliphatic ester end groups.Type: GrantFiled: September 10, 2004Date of Patent: September 12, 2006Assignee: General Electric CompanyInventors: Hans-Peter Brack, Dennis Karlik, Jan Pleun Lens
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Patent number: 7094861Abstract: Compositions exhibiting water resistant anti-static properties prepared from a thermoplastic polymer and a polymeric anti-static salt is disclosed.Type: GrantFiled: March 31, 2004Date of Patent: August 22, 2006Assignee: General Electric CompanyInventors: Jennifer Dean, Dibakar Dhara, Theodorus Lambertus Hoeks, Chiel Leenders, Anandrao S. Patil, Bhimrao D. Sarwade, Prakash P. Wadgaonkar
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Patent number: 7091302Abstract: The invention describes a process for the preparation of polycarbonate. The process includes (a) transesterifying at least one aromatic dihydroxyaryl compound and a diaryl carbonate in the melt in the presence of a catalyst, (b) mixing the melt obtained in step (a) with a foaming agent (c) passing the mixture at 250 to 340° C. through inlet openings of a separating vessel at a rate of 0.1 to 20 kg/hour, to obtain a plurality of streams of foamed polycarbonate and degassing the streams of foamed polycarbonate in the separating vessel wherein the pressure is 0.1 to 20 mbar.Type: GrantFiled: April 14, 2005Date of Patent: August 15, 2006Assignee: Bayer Materialscience AGInventors: Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber, Steffen Kühling, Melanie Möthrath, Dirk Van Meirvenne
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Patent number: 7087707Abstract: A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links.Type: GrantFiled: April 14, 2004Date of Patent: August 8, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Matt Laskoski
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Patent number: 7084234Abstract: In a process for producing polyester, the esterification of dicarboxylic acids and diols is carried out in at least one reaction stage, the prepolycondensation of the esterification product in at least one reaction stage and the polycondensation of the prepolycondensation product in at least one reaction stage. To increase the capacity of the apparatus forming one or more of the reaction stages in the production of the polyesters, at at least one of the reaction stages the supplied product system before it enters the reaction stage or within the reaction stage is divided into at least two partial streams and the partial streams entirely or partially separate from one another are passed through the reaction stage.Type: GrantFiled: April 2, 2003Date of Patent: August 1, 2006Assignee: Zimmer AktiengesellschaftInventors: Fritz Wilhelm, Michael Reisen
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Patent number: 7084232Abstract: The present invention relates to a process for preparing high molecular weight polycarbonate resin, particularly to a process for preparing high molecular weight polycarbonate resin, which conducts condensation polymerization of low molecular weight amorphous polycarbonate prepolymer prepared by transesterification of dialkyl(aryl)carbonate and aromatic hydroxy compound and solid state polymerization within short time to increase molecular weight. The present invention introduces condensation polymerization to lower mole fractions of arylcarbonate existing in unreacted diarylcarbonate, end groups of reaction by products of polymerization degree less than 3, and polycarbonate prepolymer obtained by transesterification, and thus can maximize molecular weight increase of polycarbonate after solid state polymerization and remarkably reduce time required for preparing polycarbonate of the same molecular weight.Type: GrantFiled: May 28, 2003Date of Patent: August 1, 2006Assignee: LG Chem, Ltd.Inventors: Jong-Hun Kim, Boo-Gon Woo, Eun-Duck Park, Mi-Jeung Hong
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Patent number: 7084233Abstract: A subject for the invention is to provide a branched aromatic polycarbonate which is excellent in hue and in melt characteristics such as melt strength. The invention provides a branched aromatic polycarbonate having a viscosity-average molecular weight of 16,000 or higher obtained by the transesterification method, characterized in that the ratio of the weight-average molecular weight (Mw) to number-average molecular weight (Mn) as measured by gel permeation chromatography and calculated for standard polystyrene (Mw/Mn) is in the range of from 2.8 to 4.5 and that the proportion of the number of moles of all structural units yielded by a rearrangement reaction in the course of melt polymerization reaction to 1 mol of structural units having the framework of an aromatic dihydroxy compound used as a starting material is higher than 0.3 mol % and not higher than 0.95 mol.Type: GrantFiled: March 31, 2004Date of Patent: August 1, 2006Assignees: Mitsubishi Chemical Corporation, Mitsubishi Engineering-Plastics CorporationInventors: Masaaki Miyamoto, Takao Tayama, Hiroshi Nakano
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Patent number: 7074878Abstract: A water soluble polymer is provided having two or more oligomers linked to each other by hydrolytically degradable carbonate linkages. The polymer can be hydrolytically degraded into oligomers (e.g., oligomers of ethylene oxide) under physiological conditions. The polymer can be conjugated to biologically active agents such as proteins or peptides to impart improved water solubility, reduced immunogenicity, reduced rate of renal clearance, and increased stability. The polymer is useful in making hydrolytically degradable hydrogels which can be used in drug delivery and related biomedical applications. On example of the polymer is a poly (ether carbonate) of the formula X—O—[(—CH2CH2—O—)n—CO2—]n—(CH2CH2))n-y where X and Y are independently H, alkyl, alkenyl, aryl, or a reactive moiety, and at least one of X and Y is a reactive moiety.Type: GrantFiled: April 10, 2003Date of Patent: July 11, 2006Inventors: J. Milton Harris, Michael David Bentley, Xuan Zhao, Xiaoming Shen
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Patent number: 7071284Abstract: An improvement in the continuous two-phase interfacial condensation process for preparing polycarbonate is disclosed. In the process that entails at least one diphenol, phosgene, at least one chain terminator, and optionally branching agents and is carried out in the presence of a catalyst the improvement comprising maintaining the concentration of the catalyst at a level of at least 0.012 mol per mol of diphenol.Type: GrantFiled: January 5, 2004Date of Patent: July 4, 2006Assignee: Bayer AktiengesellschaftInventors: Hermann Kauth, Christian Kords, Jürgen Heuser
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Patent number: 7071283Abstract: The invention relates to a method for producing polycarbonate according to the method for the transesterification of molten mass whereby bis-(hydroxyaryl) compounds (bisphenols) and diaryl carbonates are reacted by means of reactive rectification.Type: GrantFiled: August 10, 2001Date of Patent: July 4, 2006Assignee: Bayer MaterialScience AGInventors: Gerald John, Edmund Dikow, Christine Mendoza-Frohn, Georg Ronge, Rolf Bachmann, Lutz Gottschalk, Michael Prein
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Patent number: 7071285Abstract: An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a structural unit of formula (2) and a structural unit with charge transporting properties, each of the structural units being contained in an amount of 5 wt. % or more of the total weight of the polycarbonate resin. There is disclosed an aromatic polycarbonate resin having a structural unit of formula (1) and the structural unit of formula (2), with the relationship between the composition ratios being 0<k/(k+j)<1 when the composition ratio of the structural unit (1) is k and that of the structural unit (2) is j, or an aromatic polycarbonate resin having a repeat unit of formula (3). The formulas (1) to (3) are specified in the specification.Type: GrantFiled: July 1, 2004Date of Patent: July 4, 2006Assignee: Ricoh Company, Ltd.Inventors: Shinichi Kawamura, Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka, Katsuhiro Morooka
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Patent number: 7067609Abstract: The present invention relates to a polycarbonate resin that has a viscosity average molecular weight of from 10,000 to 17,000 and has characteristic features in an iron content, a free total phenol content, a content of a releasing agent, a fraction of hydroxyl end groups, a 1H-NMR spectrum or the like. The polycarbonate resin has less defects due to flash without increase of an addition amount of a releasing agent to an unnecessary level and therefore is suitable for a material of an optical disk substrate.Type: GrantFiled: January 14, 2004Date of Patent: June 27, 2006Assignee: Idemitsu Kosan Co., LtdInventors: Tatsuya Tomioka, Hiroshi Kawato, Munehiro Chosa
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Patent number: 7067610Abstract: An integrated method for producing aromatic polycarbonate, including the steps of: (1) making a liquid mixture of acetone and diphenylcarbonate; (2) transporting the liquid mixture of step (1) to a polycarbonate production plant; (3) separating the diphenylcarbonate from the acetone in the liquid mixture in the polycarbonate production plant; (4) reacting the diphenylcarbonate with bisphenolacetone to produce polycarbonate, thereby liberating phenol; (5) reacting phenol of step (4) with acetone of step (3) to produce bisphenolacetone; (6) using bisphenolacetone of step (5) in the reaction of step (4).Type: GrantFiled: September 14, 2004Date of Patent: June 27, 2006Assignee: Shell Oil CompanyInventor: Garo Garbis Vaporciyan
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Patent number: 7060780Abstract: A molded article produced by injection-molding a molten form of a flame-retardant aromatic polycarbonate resin composition comprising: 100 parts by weight of an aromatic polycarbonate (A) (Mw: 17,000 to 35,000), 0.01 to 3 parts by weight of inorganic compound particles (B) (average diameter: 10 nm to 10 ?m), 0.001 to 0.5 part by weight of an alkali metal salt (C) of an organic sulfonic acid, and 0.01 to 0.Type: GrantFiled: March 18, 2003Date of Patent: June 13, 2006Assignee: Asahi Kasei Chemicals CorporationInventors: Akira Miyamoto, Toshiharu Sakuma, Kazuhiro Shibuya, Hiroshi Hachiya
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Patent number: 7057004Abstract: A method is provided for reducing the color generated during production of copolycarbonate that includes quinone-type residues. The method includes the steps preparing a reaction mixture containing precursors of monomer residues, selecting a catalyst introduction strategy and adding catalysts according to the strategy. The strategy is sufficient to result in a product copolycarbonate with improved color. The method further includes the steps of introducing the reaction mixture to a series of process units and allowing the reaction mixture to polymerize thereby forming a copolycarbonate. The resulting copolycarbonate has improved color as compared to a copolycarbonate formed in a process without the steps of selecting a catalyst introduction strategy and introducing catalysts according to the selected strategy.Type: GrantFiled: January 29, 2004Date of Patent: June 6, 2006Assignee: General Electric CompanyInventors: Jan Henk Kamps, Jan Pleun Lens
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Patent number: 7057005Abstract: The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the coupling catalyst to the polymerization at a point during the oligomerization in the reaction results in a higher degree of branching and improved rheological properties.Type: GrantFiled: June 29, 2004Date of Patent: June 6, 2006Assignee: Dow Global TechnologiessInc.Inventors: Susanne Rohde, Bernhard Elbert
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Patent number: 7045214Abstract: A method for recycling an optical disk includes crushing a recovered optical disk without further treatment into chips that are used as a raw material of a resin composition for forming a film. The resin composition can be formed by injection molding to form a resin molded article. A film is formed on the surface of the resin molded article by plating or coating.Type: GrantFiled: May 25, 2004Date of Patent: May 16, 2006Assignee: Sony CorporationInventor: Yasuhito Inagaki
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Patent number: 7041775Abstract: The present invention provides a method of making polycarbonate oligomers, polycarbonate, molded articles formed from polycarbonate, and an apparatus for making polycarbonate. An oligomer mixture is first prepared by the steps of providing an equilibration system comprising a vessel, a reaction mixture contained within the vessel, and means for mixing the reaction mixture contained within the vessel wherein the reaction mixture comprises a melted activated diaryl carbonate composition, and a catalyst present in sufficient amount to initiate an oligomerization reaction between a dihydroxy composition and the activated diaryl carbonate to form polycarbonate oligomers.Type: GrantFiled: April 21, 2004Date of Patent: May 9, 2006Assignee: General Electric CompanyInventors: Maria Tomas Martinez, Alberto Nisoli, Alfredo Lopez Carretero, Ganesh Kailasam, David Domingo, Patrick Joseph McCloskey
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Thermoplastic molding compounds with improved surface properties and improved structural homogeneity
Patent number: 7041781Abstract: Homo- and/or copolymers of one or more ethylenically unsaturated monomers, suitable for the preparation of molded articles that feature improved properties, especially improved fracture properties, heat stability and notched impact strength are disclosed. These homo- and/or copolymers are characterized in that they contain less than 400 particles per m2 of surface area with a diameter greater than 200 ?m.Type: GrantFiled: May 21, 2001Date of Patent: May 9, 2006Assignee: Bayer AktiengesellschaftInventors: Alfred Eitel, Michael König, Dorothy Rose, Hans-Bernhard Hauertmann, Heinrich Alberts, Dieter Wittmann -
Patent number: 7041774Abstract: Disclosed herein are zeolite compositions comprising structural units of the formulae: wherein “B” and “C” are spacer groups comprising C2 to C20 hydrocarbyl groups; and R1 and R2 independently of each other comprise alkali metal, hydrogen, or C1 to C20 alkyl groups. The zeolite compositions further comprise structural units derived from a heteropolyacid compound of the formula: (M3)3(M4)(M5)12O40; where M3 comprises hydrogen or an alkali metal; M4 comprises phosphorus or silicon, and M5 comprises tungsten or molybdenum. Methods for preparing these zeolite compositions are also disclosed. The zeolite compositions are useful as catalysts for producing bisphenols.Type: GrantFiled: September 30, 2003Date of Patent: May 9, 2006Assignee: General Electric CompanyInventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Prakash Kukalyekar, Adil Minoo Dhalla, Jonathan L. Male, James L. Spivack, Arumugamangalam Venkataraman Ramaswamy, Anand Pal Singh
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Patent number: 7034099Abstract: A method is provided for reducing the color generated during production of copolycarbonate that includes quinone-type residues. The method includes the steps of mixing the precursors of monomer residues, a carbonate source and a polymerization catalyst into a reaction mixture. The method further includes the steps of introducing an antioxidant such as a hydroxycarboxylic acid to the reaction mixture in an amount sufficient to reduce color formation and introducing the reaction mixture to a series of process units wherein the reaction mixture polymerizes. The resulting copolycarbonate has improved color as compared to a copolycarbonate formed in a process without the step of introducing an antioxidant to the melt polymerization process.Type: GrantFiled: August 24, 2004Date of Patent: April 25, 2006Assignee: General Electric CompanyInventors: Jan Henk Kamps, Jan Pleun Lens
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Patent number: 7015302Abstract: Copolymers having repeating units derived from monocyclic esters or carbonates and certain bicyclic diesters and/or carbonates have controllable rheological properties. The bicyclic diester and/or carbonate copolymerizes easily with the monocyclic monomers, especially with lactide, to form copolymer that can have tailored levels of branching. The copolymers have excellent rheological properties, including increased melt tensions and improved shear thinning, compared to the analogous linear polymers.Type: GrantFiled: December 1, 2003Date of Patent: March 21, 2006Assignee: Natureworks LLCInventors: Ray Drumright, Mark Hartmann, Richard A. Wolf
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Patent number: 7005496Abstract: A method for producing trimethylene carbonate poly(trimethylene carbonate which comprises (a) introducing liquid poly(trimethylene carbonate) and an optional catalyst into a wiped film evaporator reactor under a vacuum about 15 kPa or less, said reactor having walls heated to at least about 230° C. and an internal condenser heated to a temperature above the boiling point of trimethylene carbonate, (b)spreading the poly(trimethylene carbonate) into a thin film and allowing it to flow down the interior surface of the heated walls, (c) depolymerizing the poly(trimethylene carbonate) to form trimethylene carbonate which is driven to the internal condenser and residue poly(trimethylene carbonate) which continues down the reactor, and (d) collecting the trimethylene carbonate in a cooled distillate receiver.Type: GrantFiled: July 9, 2004Date of Patent: February 28, 2006Assignee: Shell Oil CompanyInventors: Wyndham Henry Boon, David Eric Gwyn, Thomas Clayton Forschner, Laurel Arden Gingrich
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Patent number: 6984393Abstract: This invention relates to thermally crosslinked and photo-crosslinked biodegradable and biocompatible elastomeric polymers. The elastomers can be used for biomedical devices such as needles, stents, catheters, scaffolds for tissue engineering, and implantable drug delivery devices. The photo-crosslinked elastomers are particularly useful for delivery devices for proteins and peptides.Type: GrantFiled: May 7, 2002Date of Patent: January 10, 2006Assignee: Queen's University at KingstonInventor: Brian G. Amsden
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Patent number: 6960641Abstract: A method of preparing block copolymers by solid state polymerization is described. A mixture of a partially crystalline polycarbonate having activated terminal aryloxy groups, for example terminal methyl salicyl groups, when heated together with an oligomeric polyester having reactive terminal hydroxy groups under solid state polymerization conditions affords block copolymers. The activated terminal aryloxy groups play a key role in preserving the block lengths of the starting materials. A control sample in which the partially crystalline polycarbonate lacks activated terminal aryloxy groups, for example polycarbonates substituted by phenol, affords a much lower molecular weight, more highly randomized copolymer product. The product block copolymers are useful as “weatherable” plastic materials.Type: GrantFiled: December 22, 2003Date of Patent: November 1, 2005Assignee: General Electric CompanyInventors: Gregory Allen O'Neil, James Day, Daniel Joseph Brunelle, Joseph Anthony Suriano, Patrick Joseph McCloskey, Paul Michael Smigelski, Jr.
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Patent number: 6930164Abstract: A method of preparing a telechelic ionomeric polyester includes reacting a first diol with a sulfoaromatic carboxylic acid salt to form a sulfoaromatic carboxylate ester salt, and reacting the sulfoaromatic carboxylate ester salt with a diester and a second diol in the presence of a transesterification catalyst to form a telechelic ionomeric polyester. Also disclosed are telechelic ionomeric polyesters.Type: GrantFiled: June 15, 2004Date of Patent: August 16, 2005Assignee: General Electric CompanyInventors: Daniel Joseph Brunelle, Corrado Berti, Martino Colonna, Maurizio Fiorini, Laura Sisti
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Patent number: 6919419Abstract: An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a diol compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol compound of formula (4) is produced by polymerizing the diphenol compound of formula (2) and a halogenated carbonyl compound by solution or interfacial polymerization. An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon containing the above-mentioned aromatic block polycarbonate resin. An electrophotographic image forming method or apparatus employs the above-mentioned photoconductor. A process cartridge holds therein the photoconductor and at least one of the electrophotographic image forming units.Type: GrantFiled: January 22, 2003Date of Patent: July 19, 2005Assignees: Ricoh Company Ltd., Hodogaya Chemical Co., Ltd.Inventors: Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Shinichi Kawamura, Susumu Suzuka, Katsuhiro Morooka
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Patent number: 6916899Abstract: A process of using of a particularly substituted phenol as a chain terminator of a polymeric resin is disclosed. The chain terminator is a member selected from among ortho-substituted phenol, metha-substituted phenol, and their corresponding coupled esters. The polymeric resin is selected among polycarbonate, polyester carbonate and polyester. The thus chain terminated resin is suitable for producing molded parts and extrudates. Also disclosed are the process for producing these polymers and processes for producing the molded parts and extrudates.Type: GrantFiled: February 5, 2004Date of Patent: July 12, 2005Assignee: Bayer AktiengesellschaftInventors: Friedrich-Karl Bruder, Helmut-Werner Heuer, Alexander Meyer, Rolf Wehrmann
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Patent number: 6900283Abstract: Stable, homogeneous melt solutions are prepared at temperatures of 200° C. or less from solid mixtures comprising at least one diaryl carbonate, at least one high melting dihydroxy aromatic compound (mp>200° C.), a transesterification catalyst, and optionally a lower melting dihydroxy aromatic compound. Thus, a stable, homogeneous melt solution is obtained from a solid mixture comprising 4,4?-biphenol (mp 282-284° C.) at a temperature of about 200° C. using either diphenyl carbonate or bis(methyl salicyl) carbonate as the diaryl carbonate component. It is shown that formation of the stable, homogeneous melt solutions requires the presence of the transesterification catalyst when substantial amounts of the high melting dihydroxy aromatic compound are present in the initial solid mixture. Solid mixtures comprising a variety of high melting bisphenols; 4,4?-biphenol; 3,3,3,3?-tetramethylspirobiindanbisphenol, and 4,4?-sulfonyidiphenol are converted to stable, homogeneous melt solutions at 200° C.Type: GrantFiled: November 4, 2002Date of Patent: May 31, 2005Assignee: General Electric CompanyInventors: Narayan Ramesh, Patrick Joseph McCloskey, Kathryn Lynn Longley
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Patent number: 6896966Abstract: This invention relates to thermoplastic article having one or more decorative materials on the surface thereof which is obtained by applying heat and pressure to a laminate wherein said thermoplastic article comprises (1) one or more decorative materials; and (2) an upper or lower sheet material; wherein the upper or lower sheet material is formed from a polyester/aromatic polycarbonate blend.Type: GrantFiled: November 22, 2002Date of Patent: May 24, 2005Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, Robert William Seymour
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Patent number: 6897282Abstract: The invention relates to a method of forming a polyphenylene ether resin containing residual aliphatic unsaturation. A polyphenylene ether is reacted with a capping agent in a solvent to form the polyphenylene ether resin containing residual aliphatic unsaturation, which is precipitated from solution by combining the solution with an antisolvent. The precipitated polyphenylene ether resin containing residual aliphatic unsaturation has lower levels of residual impurities than the same compound isolated by devolatilization.Type: GrantFiled: October 3, 2003Date of Patent: May 24, 2005Assignee: General ElectricInventors: Amy Freshour, Hua Guo, Robert L. Howe, Edward N. Peters, Gary William Yeager
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Patent number: 6894142Abstract: A process of preparing a branched (co)polycarbonate resin is disclosed. The process entails using at least one compound conforming to formulae 1a or 1b in which R1, R2 and R3 independently denote linear or branched C1-C10-alkyl, R4 and R5 independently denote hydrogen or linear or branched C1-C10-alkyl, p1 and p2 independently of one another denote a whole number between 3 and 10, as a branching agent.Type: GrantFiled: April 1, 2004Date of Patent: May 17, 2005Assignee: Bayer Materialscience AGInventors: Helmut-Werner Heuer, Rolf Wehrmann, Michael Erkelenz
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Patent number: 6894141Abstract: A main chain type liquid crystalline polyester comprises at least two units selected from aromatic diol units, aromtic dicarboxylic acid units, and aromatic hydroxycarboxylic acid units as essential units and a structural unit containing a cationically polymerizable group selected from the group consisting of vinyloxy groups, epoxy groups, and oxetany groups in at least one of the terminal ends of the main chain.Type: GrantFiled: April 26, 2002Date of Patent: May 17, 2005Assignee: Nippon Oil CorporationInventors: Yasushi Satoh, Tadahiro Kaminade, Hitoshi Mazaki
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Patent number: 6891015Abstract: High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of ester-substituted phenols with phosgene in the presence of a phase transfer catalyst (PTC) and optionally a tertiary amine catalyst in a solvent free reaction system comprising an aqueous phase held at a pH of 8.3 or higher. The optimized conditions of the present invention use an excess of ester-substituted phenol relative to phosgene and high conversion of phosgene to ester-substituted diaryl carbonate is observed. The product ester-substituted diaryl carbonate may be conveniently isolated as a solid by filtration or as a liquid in which the excess ester-substituted phenols serves as solvent. The method represents an attractive route for the manufacture of bis methyl salicyl carbonate and ester-substituted diaryl carbonates generally. The ester-substituted diaryl carbonates are useful for the preparation and modification of polycarbonates.Type: GrantFiled: August 12, 2002Date of Patent: May 10, 2005Assignee: General Electric CompanyInventors: Timothy Brydon Burnell, Patrick Joseph McCloskey, Ganesh Kailasam, James Anthony Cella
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Patent number: 6887968Abstract: A process for making a high molecular weight (co)polycarbonate resin is disclosed. The process entails (i) obtaining at least one member selected from the group low molecular weight residue (weight average molecular weight 15,000 to 30,000) of aromatic (co)polycarbonate production, waste of (co)polycarbonate production, remainders of (co)polycarbonate production and (co)polycarbonate recyclate (ii) melting the said member in a suitable vessel to obtain a melt and (iii) feeding the melt into a reactor optionally along with at least one bisphenol or oligocarbonate having terminal OH groups and further optionally with a transesterification catalyst, and (iv) subjecting the melt to transesterification reaction at a temperature of 250 to 350° C., at a pressure below 5 mbar and residence time of 0.02-4 hours.Type: GrantFiled: August 28, 2002Date of Patent: May 3, 2005Assignee: Bayer AktiengesellschaftInventors: Heinrich Hähnsen, Uwe Hucks, Silke Kratschmer, Manfred Schraut
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Patent number: 6887969Abstract: Usually, polycarbonate polymerization is limited by the rate at which inhibitory byproducts, such as phenol and salicylate, can be removed from the reaction. To facilitate the removal of volatile reaction byproducts from the reaction as polymerization occurs, the present invention provides a spray mist reactor. The formation of a spray mist polymerization reaction allows for the creation of an enormous surface area for exchange of volatile byproducts. The present invention is applicable to polymerization of polycarbonate and its copolymers starting with monomers or oligomers. The invention may be used to increase throughput and minimize initial investment for a give melt process, especially the fast reacting bis(methylsalicylate) carbonate process.Type: GrantFiled: October 4, 2002Date of Patent: May 3, 2005Assignee: General Electric CompanyInventors: James Day, Patrick J. McCloskey, Paul M. Smigeiski, Jr.
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Patent number: 6887970Abstract: The invention relates to a continuous method for producing polycarbonates by transesterifying diaryl carbonates with dihydroxyaryl compounds in the presence of quaternary onium compounds. The invention also relates to polycarbonates produced thereby and products produced from said polycarbonates.Type: GrantFiled: March 13, 2002Date of Patent: May 3, 2005Assignee: Bayer AktiengesellschaftInventors: Silke Kratschmer, Uwe Hucks, Michael Prein
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Patent number: 6884864Abstract: The present invention relates to a polycarbonate which can be obtained by a melting method and whose loss angle ? and complex viscosity ?* (Pa·s) measured under the conditions of 250° C. and an angular velocity of 10 rad/s satisfy the following relation (1): 2,500?Tan ?/(?*)?0.Type: GrantFiled: April 10, 2002Date of Patent: April 26, 2005Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Tatsuya Masuki, Hiroshi Yoshioka, Takao Tayama, Masaaki Miyamoto
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Patent number: 6872798Abstract: The invention relates to a polycarbonate composite material which can be thermoplastically shaped and which comprises at least two layers. The invention is characterised in that at least one layer comprises an LOI value of lower than 29 and at least one layer comprises an LOI value of higher than 29. The invention also relates to methods for producing said material, the use of the same and flame-proof polycarbonate moulded parts.Type: GrantFiled: November 2, 2001Date of Patent: March 29, 2005Assignee: Roehm GmbH & Co., KGInventors: Detlef Bumann, Andreas Fetzer, Michael Meier-Kaiser
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Patent number: 6870025Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4?-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.Type: GrantFiled: December 23, 2002Date of Patent: March 22, 2005Assignee: General Electric CompanyInventors: Patrick Joseph McCloskey, Jan Pleun Lens, James Anthony Cella, Jan Henk Kamps, Kathryn Lynn Longley, Narayan Ramesh, Warren William Reilly, Paul Michael Smigelski, Jr., Marc Brian Wisnudel
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Patent number: 6870013Abstract: Copolyorganosiloxanecarbonates are prepared by first preparing an oligomeric aromatic polycarbonate, such as an oligomeric bisphenol A polycarbonate, in the presence of a tertiary amine as the only catalyst species; contacting the oligomeric polycarbonate mixture with a polyorganosiloxane bis(aryl)chloroformate, such as the bischloroformate of hydroxy-terminated eugenol polydimethylsiloxane; and introducing phosgene and/or chain termination agent either continuously or in stages. A feature of the process is the presence of dihydroxyaromatic compound in only one charge, at the beginning. The products have excellent physical properties, including transparency.Type: GrantFiled: August 8, 2003Date of Patent: March 22, 2005Assignee: General Electric CompanyInventors: James Manio Silva, David Michel Dardaris, Gary Charles Davis