Patents Represented by Attorney, Agent or Law Firm James R. Franks
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Patent number: 6740730Abstract: The invention relates to a novel polycarbonate and its use a material in the production of molded articles and semifinished products, especially for transparent articles such as data memories or radio compact discs, slabs, cellular sheets, films, housings, panes, especially panes for motor vehicles, diffusion glasses, but also for electrical applications or the constructions of houses.Type: GrantFiled: January 15, 2002Date of Patent: May 25, 2004Assignee: Bayer AktiengesellschaftInventors: Silke Kratschmer, Uwe Hucks, Lothar Bunzel
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Patent number: 6737471Abstract: A solid and/or cellular polyurethane elastomers which are produced using polyester polyols are disclosed. The elastomers which exhibit improved stability to hydrolysis are characterized in that their preparation is carried out in the presence of at least one esters of monobasic carboxylic acid or polybasic carboxylic acids, the (first) dissociation constant (pK) of which is 0.5 to 4.Type: GrantFiled: December 14, 2001Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Klaus Lorenz, Marc Schütze, Erhard Michels, Alexander Eckhardt
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Patent number: 6734278Abstract: The present invention provides a two-stage process for the production of polyester carbonates with aliphatic dicarboxylic acids, the polyester carbonates obtained thereby, a process for the production of extrudates and molded articles from the polyester carbonates, and the extrudates and molded articles obtained thereby.Type: GrantFiled: October 2, 2002Date of Patent: May 11, 2004Assignee: Bayer AktiengesellschaftInventors: Silke Kratschmer, Wolfgang Alewelt, Friedrich-Karl Bruder, Wilfried Haese, Rolf Wehrmann, Peter Fischer, Marco Roelofs, Lothar Bunzel
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Patent number: 6730386Abstract: An extruded polycarbonate article suitable as an energy absorber is disclosed. The article includes a plurality of honeycomb chambers that are aligned substantially in the same direction, extend in the direction of the extrusion and are disposed adjacent to one another. A method of using the article entails aligning the honeycomb chambers in a direction parallel to the direction of the impact energy.Type: GrantFiled: April 29, 2002Date of Patent: May 4, 2004Assignee: Bayer AktiengesellschaftInventors: Kurt-Rainer Stahlke, Roland Brambrink
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Patent number: 6727301Abstract: A graft polymer-modified thermoplastic polycarbonate molding composition is described. The thermoplastic polycarbonate molding composition comprises a phosphorous compound or a mixture of phosphorous compounds. Thermoplastic molding compositions according to the present invention are flame resistant, and have desirable mechanical properties and elevated heat resistance.Type: GrantFiled: September 25, 2001Date of Patent: April 27, 2004Assignee: Bayer AktiengesellschaftInventors: Thomas Eckel, Michael Zobel, Dieter Wittmann, Torsten Derr, Manfred Öller
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Patent number: 6726354Abstract: A device for mixing and reacting multiphase gaseous and liquid mixtures is disclosed. The device comprise in sequence a first inflow cylindrical space, at least one cylindrical chamber tapering towards said cylindrical space, a second cylindrical space positioned perpendicularly to said first cylindrical space, and an outflow space. Also disclosed is a method of using the device, in particular in the interfacial process for preparing diphenyl carbonates or polycarbonates.Type: GrantFiled: August 8, 2001Date of Patent: April 27, 2004Assignee: Bayer AktiengesellschaftInventors: Werner Breuer, Frieder Heydenreich, Günter Jeromin, Helmut Judat
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Patent number: 6723333Abstract: The invention provides moulded items made from thermoplastic polyurethanes (TPUs), in particular medical articles such as central venous catheters which contain a homogeneous distribution of antibiotic substances, a process for the preparation thereof and preparation of the active substance-containing TPUs.Type: GrantFiled: September 15, 2000Date of Patent: April 20, 2004Assignee: Bayer AktiengesellschaftInventors: Reinhard Albers, Ralf Dujardin, Heinz Pudleiner, Joachim Simon, Günther Eberz, Wolfgang Kreiss, Christina Krasemann-Sharma
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Patent number: 6723885Abstract: A process for the production of 2,2-bis(4-hydroxyphenyl)propane (BPA) is disclosed. The process that entails reacting acetone with phenol in the presence of cross-linked sulfonated polystyrene resins is characterised in that BPA is separated from the reaction solution downstream of the reaction unit by means of a multi-stage vacuum distillation and a subsequent single- or multi-stage layer crystallisation. The by-product stream with accumulated by-products is returned downstream of the reaction unit.Type: GrantFiled: August 26, 2002Date of Patent: April 20, 2004Assignee: Bayer AktiengesellschaftInventors: Frieder Heydenreich, Michael Prein, Michael Bödiger, Rainer Neumann, Gerhard Fennhoff, Johan Vaes
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Patent number: 6716933Abstract: The present invention relates to a process for working up solutions of polymers in organic solvents contaminated by alkaline constituents, using homogeneously soluble acids, especially by the introduction of an acid gas, and subsequent washing, and to the polymers so obtainable, which are distinguished by the fact that, on treatment with moist heat (sterilisation), only few defects caused by decomposition are formed, to the use thereof in the production of extrudates and molded specimen, and to the extrudates and molded specimen produced from those polymers themselves.Type: GrantFiled: July 16, 2002Date of Patent: April 6, 2004Assignee: Bayer AktiengesellschaftInventors: Wolfgang Alewelt, Wolfgang Ebert, Thomas Fritz, Dirk Jahn, Stefan Westernacher, Frank Bruynseels, Johann Rechner
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Patent number: 6708583Abstract: Described is a shaft support structure (2) comprising, (a) an elongated shell (11) having interior surfaces (14) which define a hollow interior (17); and (b) a plurality of reinforcing ribs (20) of plastic material located within the hollow interior (17) of the shell (11). At least a portion of the reinforcing ribs (20) are in abutting relationship (23) with the interior surfaces (14) of the shell (11). The reinforcing ribs (20) define a longitudinal passage (41) through the elongated shell (11) for receiving and supporting a rotatable shaft (47). The reinforcing ribs (20) are fixedly attached to the elongated shell (11). The reinforcing ribs (20) are preferably formed by molding, e.g., injection molding, of plastic material onto the interior surfaces (14) of the elongated shell (11).Type: GrantFiled: April 18, 2001Date of Patent: March 23, 2004Assignee: Bayer Polymers LLCInventors: Timothy A. Palmer, Christopher T. Korson
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Patent number: 6703473Abstract: An improvement to the melt transesterification reaction of diaryl carbonate with dihydroxy aryl compound is disclosed.Type: GrantFiled: January 2, 2002Date of Patent: March 9, 2004Assignee: Bayer AktiengesellschaftInventors: Uwe Hucks, Kaspar Hallenberger, Silke Kratschmer, Michael Prein, Steffen Kühling
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Patent number: 6695991Abstract: A device for exchanging a die plate of a molten bisphenol A prilling tower is described. The device comprises: (a) at least two die plates; (b) a guide which is in contact with the die plates; and (c) a drive mechanism, wherein the drive mechanism moves the die plates linearly and serially between an operating position and an exchange position along the guide. Also described is a process of automated operation of the device at the top of a bisphenol A prilling tower.Type: GrantFiled: July 25, 2001Date of Patent: February 24, 2004Assignee: Bayer AktiengesellschaftInventors: Rolf Lanze, Günter Holdenried, Rainer Neumann, Frieder Heydenreich, Tony van Osselaer
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Patent number: 6688680Abstract: A molded cross vehicle beam which includes a hollow blow molded thermoplastic rigid member that is integrally attached to a rigid support, e.g., a U-shaped metal plate, and at least one attachment element, is described. The rigid support (12) has a first surface, a second surface and a plurality of perforations having edges. The attachment element(s) (81, 84) have a first surface, a second surface and a plurality of perforations having edges. The attachment element provides a manner of attaching the molded cross vehicle beam to a separate structure (e.g., the A-pillars of an automobile). A thermoplastic parison precursor of the hollow rigid thermoplastic member (15) is blow molded against the first surfaces of the rigid support (12) and the attachment element (81, 84).Type: GrantFiled: December 17, 2002Date of Patent: February 10, 2004Assignee: Bayer Polymers LLCInventors: Christopher Cooper, Olaf J. Zoellner
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Patent number: 6669873Abstract: Described is a polymerizable organic composition comprising: (a) a radically polymerizable gel-free prepolymer of (i) at least one first polymerizable monomer having at least two radically polymerizable ethylenically unsaturated groups, e.g., divinyl benzene, and (ii) at least one first polythiol monomer having at least two thiol groups, e.g., thioglycerol bis(mercaptoacetate); and (b) at least one second polymerizable monomer having at least two radically polymerizable ethylenically unsaturated groups, e.g., divinyl benzene and/or methacrylic anhydride, the first and second radically polymerizable monomers each being substantially free of norbornene groups. The molar equivalent ratio of ethylenically unsaturated groups of (a)(i) to the thiol groups of (a)(ii) is no greater than 1:1. The described polymerizable composition has reduced shrinkage, and a polymerizate prepared therefrom has a refractive index of at least 1.57 and an Abbe number of at least 33.Type: GrantFiled: March 14, 2000Date of Patent: December 30, 2003Assignee: PPC Industries Ohio, Inc.Inventors: Robert A. Smith, Robert D. Herold, Michael O. Okoroafor
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Patent number: 6666297Abstract: An acoustic shielding article which includes a shaped thermoplastic element that has a metal inlay element fixedly attached thereto, is described. More particularly, the acoustic shielding article (1) includes: (a) a shaped thermoplastic element (3) having a surface (11) that faces a source of sound (14); and (b) a metal inlay element (2) having substantially opposed first (17) and second (20) surfaces, at least one of which is fixedly joined to the shaped thermoplastic element. The shaped thermoplastic element is formed by means of molding thermoplastic material onto at least one of the first and second surfaces of the metal inlay element, thereby fixedly joining the metal inlay element to the shaped thermoplastic element.Type: GrantFiled: January 15, 2003Date of Patent: December 23, 2003Assignee: Bayer AktiengesellschaftInventors: Ulrich Grosser, Jürgen Knaup
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Patent number: 6656889Abstract: A thermoplastic molding composition comprising A) a thermopolastic polymer, e.g., a copolymer of styrene and acyrlonitrile, B) a graft copolymer, e.g., a graft copolymer of styrene, acrylonitrile and polybutadiene, and C) an additive mixture is described. The additive mixture C) comprises a combination of at least three components selected from components (I), (II), (III) and (IV). Component (I) contains carboxylic acid metal salt groups, e.g., magnesium stearate. Component (II) contains both carboxylic acid ester linkages and thio linkages, e.g., esters of &bgr;-thiodipropionic acid with monhydric alcohols. Component (III) contains amide linkages, e.g., ethylenediamine bisstearyl amide. Component (IV) is a compound that is different than components (I)-(III), e.g., a low molecular weight styrene/acrylonitrile copolymer. Also described are molded articles prepared from the thermoplastic molding composition of the present invention.Type: GrantFiled: September 18, 2001Date of Patent: December 2, 2003Assignee: Bayer AktiengesellschaftInventor: Herbert Eichenauer
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Patent number: 6644722Abstract: A molded article, e.g., a cross car beam (3), which includes a rigid support (a) having a plurality of perforations, e.g., rigid support (12), and a rigid hollow thermoplastic member (b), e.g., an air duct (15), attached thereto is described. A portion of the thermoplastic material of rigid hollow member (b) extends through at least some of the perforations of rigid support (a), embedding the edges of the perforations therein. The thermoplastic material extending through the perforations forms an attachment element, e.g., an attachment head (24), that serves to fixedly attach rigid hollow member (b) to rigid support (a). Also described is a method of preparing the molded article of the present invention, in which the rigid hollow member (b) is fixedly attached to the rigid support (a) during the blow mold fabrication of rigid hollow member (b).Type: GrantFiled: January 17, 2002Date of Patent: November 11, 2003Assignee: Bayer CorporationInventor: Christopher Cooper
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Patent number: 6637788Abstract: The safety bumper includes: (a) a bumper basic body (4) having a forward surface; (b) a bumper bar (5); (c) a mounting member (11); (d) a cross-bar (10) of the vehicle, (e) at least one of a deployable energy-absorbing element (9; 32, 33, 39, 41; 52, 60) positioned above the mounting member (11) and a deployable energy-absorbing element (17, 20; 38, 46; 64) positioned below mounting member (11); and (f) an impact sensor (6) located in bumper bar (5). The bumper bar (5) is connected to bumper basic body (4) and extends through to the forward surface of bumper basic body (4), bumper bar (5) is also connected to mounting member (11), and mounting member (11) is located behind bumper basic body (4) and bumper bar (5). The mounting member (11) is connected to cross-bar (10), which is located behind mounting member (11).Type: GrantFiled: January 4, 2002Date of Patent: October 28, 2003Assignee: Bayer AktiengesellschaftInventors: Olaf Zöllner, Andreas Lang, Thorsten Bredemann
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Patent number: 6639022Abstract: A process for the preparation of superabsorbent polymers by alkaline hydrolysis of polyacrylonitrile emulsions is disclosed. In an embodiment of the invention the process comprise preparing a PAN emulsion, subjecting the emulsion to alkaline hydrolysis, neutralizing the hydrolysate followed by drying, granulation and modifying the surface of the granular polymer by crosslinking. The process is characterized in that the isolation of the superabsorbent polymer entails neither alcohols nor organic solvents.Type: GrantFiled: April 16, 2001Date of Patent: October 28, 2003Assignee: Bayer AktiengesellschaftInventors: Gisbert Michels, Thomas Gross
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Patent number: 6630216Abstract: Described is a molded plastic article which includes a barrier film. The molded plastic article is prepared by a process which involves: (a) providing a barrier film comprising at least one polymeric layer, the barrier film having a first surface and a second surface; (b) placing the barrier film in a mold such that the first surface of the barrier film is in contact with at least a portion of the interior surfaces of the mold; (c) injecting a polymer (e.g., a molten thermoplastic polymer) into the mold, the injected polymer contacting the second surface of the barrier film; and (d) removing the molded plastic article from the mold. Also described are molded articles according to the present invention, which include, for example, plastic containers, plastic fuel tanks, plastic storage units, plastic fascias and plastic motor vehicle interior cladding materials.Type: GrantFiled: July 26, 2001Date of Patent: October 7, 2003Assignee: Bayer AktiengesellschaftInventors: Dirk Pophusen, Gerhard Opelka, Detlev Joachimi, Helmut Schulte, Karsten-Josef Idel