Patents by Inventor Claus Rüdiger

Claus Rüdiger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10272654
    Abstract: The present invention relates to compositions containing flame retardant polycarbonate, which are suitable for producing flame-resistant milk-white colored plates. The composition contains polycarbonate, 0.10 to 4.00 weight percent of an acrylate-based scattering additive, 0.50 to 5.00 weight percent of an aromatic-aliphatic polyester, and 0.50 to 8.00 weight percent of a phosphorus-based flame retardant.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: April 30, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Alexander Meyer, Berit Krauter, Claus Rüdiger, Ulrich Blaschke, Peter Schwarz
  • Patent number: 9371437
    Abstract: A sheet containing a base layer containing polycarbonate and a flame retardant, wherein the flame retardant contains a compound of formula 1 wherein R1, R2, R3 and R4, represents an optionally halogen-substituted C1-C8 alkyl, C5-C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl, R5 and R6, represents a C1-C4 alkyl, and Y represents a C1-C7 alkylidene, C1-C7 alkylene, C5-C12 cycloalkylidene, —O—, —S—, —SO—, —SO2—, —CO— or a residue of formula (2) or (3) wherein Z represents carbon and R21 and R22 can be selected for each Z individually and, represent hydrogen or C1-C6 alkyl, with the proviso that, on at least one Z atom, R21 and R22 are simultaneously alkyl and wherein the polycarbonate comprises a mixture of linear and branched polycarbonate and wherein the linear polycarbonate content is at least 40 wt. %, based on the total polycarbonate weight.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: June 21, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Alexander Meyer, Berit Krauter, Claus Rüdiger, Ulrich Blaschke, Peter Schwarz
  • Patent number: 8741992
    Abstract: Disclosed is a composition comprising polycarbonate and from 0.0001 weight % to 0.1000 weight % of 2-(2,4-dihydroxy)phenyl-4,6-di(4-phenyl)phenyl-1,3,5-triazine.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: June 3, 2014
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Alexander Meyer, Claus Rüdiger, Ulrich Blaschke, Michael Wagner
  • Patent number: 8530551
    Abstract: Battery box comprising compositions containing A) 70.0 to 90.0 parts by weight of linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate, B) 6.0 to 15.0 parts by weight of at least one graft polymer, C) 2.0 to 15.0 parts by weight of one or more phosphorus compounds, D) 0 to 3.0 parts by weight of antidripping agents, E) 0 to 3.0 parts by weight of thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2), and F) 0 to 20.0 parts by weight of further additives, wherein the compositions are optionally free from rubber-free polyalkyl(alkyl)acrylate.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 10, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Eckel, Ulrich Grosser, Claus Rüdiger, Achim Feldermann, Dieter Wittmann
  • Patent number: 8414823
    Abstract: The present invention concerns a process for producing a container having at least one layer and a top layer, wherein the layer contains polycarbonate and the top layer contains polyarylethersulfone or polyarylsulfone, characterised in that a) polycarbonate is melted on an extruder at 230-320° C., b) polyarylethersulfone or polyarylsulfone is melted on a further extruder, c) the melts obtained from steps a) and b) are shaped by coextrusion into a tube, which is then enclosed in a mould, d) the extrudate is inflated inside the mould and pressed against the wall of the mould, forming the shape of the container, and e) the container obtained from d) is trimmed and cooled, such containers and the use of the containers as bottles or medical devices.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: April 9, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Claus Rüdiger, Heinrich Hähnsen, Alexander Meyer, Klaus Kraner
  • Publication number: 20130005873
    Abstract: The invention relates to compositions containing polycarbonate and defined quantities of a triazine, and to the production and use thereof for producing moulded parts, in particular optical quality sheets and tubes, according to an extrusion method
    Type: Application
    Filed: December 1, 2010
    Publication date: January 3, 2013
    Applicant: Bayer Intellcetual Property GmbH
    Inventors: Alexander Meyer, Claus Rüdiger, Ulrich Blaschke, Michael Wagner
  • Publication number: 20120244359
    Abstract: The present invention relates to compositions containing flame retardant polycarbonate, which are suitable for producing flame-resistant milk-white coloured plates.
    Type: Application
    Filed: November 3, 2010
    Publication date: September 27, 2012
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Alexander Meyer, Berit Krauter, Claus Rüdiger, Ulrich Blaschke, Peter Schwarz
  • Publication number: 20120231278
    Abstract: The present invention relates to compositions which contain flame-retardant polycarbonate and are suitable for the production of flame-resistant and milky-white sheets.
    Type: Application
    Filed: November 3, 2010
    Publication date: September 13, 2012
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Ulrich Blaschke, Alexander Meyer, Claus Rüdiger, Berit Krauter
  • Publication number: 20120213982
    Abstract: The invention relates to flame resistant polycarbonate plates characterised in that the flame-proof properties thereof are maintained even after long exposure to weathering.
    Type: Application
    Filed: November 3, 2010
    Publication date: August 23, 2012
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Alexander Meyer, Berit Krauter, Claus Rüdiger, Ulrich Blaschke, Peter Schwarz
  • Publication number: 20120074617
    Abstract: Battery box comprising compositions containing A) 70.0 to 90.0 parts by weight of linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate, B) 6.0 to 15.0 parts by weight of at least one graft polymer, C) 2.0 to 15.0 parts by weight of one or more phosphorus compounds, D) 0 to 3.0 parts by weight of antidripping agents, E) 0 to 3.0 parts by weight of thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2), and F) 0 to 20.0 parts by weight of further additives, wherein the compositions are optionally free from rubber-free polyalkyl(alkyl)acrylate.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Thomas ECKEL, Ulrich GROSSER, Claus RÜDIGER, Achim FELDERMANN, Dieter WITTMANN
  • Publication number: 20120074036
    Abstract: The present invention relates to battery boxes comprising flame-retardant compositions comprising A) linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate, B) at least one graft polymer, C) one or more phosphorus compounds, D) optionally one or more antidripping agents, optionally E) thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2), and F) optionally one or more further additives, wherein the composition is preferably free from rubber-free polyalkyl(alkyl)acrylate.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Thomas ECKEL, Ulrich GROSSER, Claus RÜDIGER, Achim FELDERMANN
  • Patent number: 8044122
    Abstract: The present invention relates to a composition containing polycarbonate and from 0.05 wt. % to 0.5 wt. % of a UV absorber and from 0.0001 wt. % to 0.03 wt. % 2-[2-hydroxy-4-(2-ethylhexyl)oxy]phenyl-4,6-di(4-phenyl)phenyl-1,3,5-triazine.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: October 25, 2011
    Assignee: Bayer MaterialScience AG
    Inventors: Claus Ruediger, Michael Wagner
  • Patent number: 7790287
    Abstract: A solid sheet comprising transparent polycarbonate matrix, particles of a transparent polymer and an antistatic agent is disclosed. Characterized in that the refractive index of said matrix differs from that of said polymer, the sheet is suitable in making diffuser plate in flat screens.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: September 7, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Claus Rüdiger, Heinz Pudleiner, Klaus Meyer, Jürgen Röhner, Tanja Grüter-Reetz, Fumika Kaneko
  • Publication number: 20100086716
    Abstract: The present invention concerns a process for producing a container having at least one layer and a top layer, wherein the layer contains polycarbonate and the top layer contains polyarylethersulfone or polyarylsulfone, characterised in that a) polycarbonate is melted on an extruder at 230-320° C., b) polyarylethersulfone or polyarylsulfone is melted on a further extruder, c) the melts obtained from steps a) and b) are shaped by coextrusion into a tube, which is then enclosed in a mould, d) the extrudate is inflated inside the mould and pressed against the wall of the mould, forming the shape of the container, and e) the container obtained from d) is trimmed and cooled, such containers and the use of the containers as bottles or medical devices.
    Type: Application
    Filed: March 6, 2008
    Publication date: April 8, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Claus Rüdiger, Heinrich Hähnsen, Alexander Meyer, Klaus Kraner
  • Patent number: 7691477
    Abstract: A multi-layer article is disclosed. The article contains a base layer that contains at least one thermoplastic resin and a second layer containing a thermoplastic (co)polyformal superimposed over the base layer. The (co)polyformal conforms to formulae (1a) or (1b), in which O-D-O and O-E-O independently denote a diphenolate group, -D- and -E- independently denote an aromatic group having 6 to 40 carbon atoms, k is a whole number from 1 to 1500, o stands for numbers from 1 to 1500, and m is z/o and n is (o-z)/o wherein z is 0 to o.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: April 6, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Sylvia Braun, Claus Rüdiger, Marco Roelofs, Wolfgang Nising, Siegfried Anders, Jürgen Röhner, Rüdiger Gorny, Ralf Hufen
  • Patent number: 7652082
    Abstract: A thermoplastic compositions containing polycarbonate and a UV absorbing compound conforming to Formula 1 wherein R denotes a branched or unbranched alkyl group with 4 to 10 carbon atoms is disclosed. The composition is suitable for making molded or extruded articles, including multilayered articles exhibiting improved weatherability.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: January 26, 2010
    Assignee: BASF SE
    Inventors: Claus Rüdiger, Frank Buckel, Peter Schwarz, Jürgen Röhner, Tanja Grüter-Reetz
  • Publication number: 20090258978
    Abstract: The present invention relates to a composition containing polycarbonate and from 0.05 wt. % to 0.5 wt. % of a UV absorber and from 0.0001 wt. % to 0.03 wt. % 2-[2-hydroxy-4-(2-ethylhexyl)oxy]phenyl-4,6-di(4-phenyl)phenyl-1,3,5-triazine.
    Type: Application
    Filed: April 22, 2009
    Publication date: October 15, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Claus Ruediger, Michael Wagner
  • Patent number: 7582720
    Abstract: The present invention relates to a solid sheet prepared from a composition that includes: (a) a transparent polycarbonate; and (b) transparent polymeric particles having an optical density which differs from the transparent polycarbonate matrix material. The present invention also relates to use of such a solid sheet as a diffuser sheet in flat screens.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: September 1, 2009
    Assignee: Bayer Material Science AG
    Inventors: Claus Rüdiger, Michael Prein, Marco Roelofs, Jürgen Röhner, Tanja Grüter-Reetz
  • Publication number: 20080090958
    Abstract: The present invention concerns a compound made of transparent thermoplastic resin, particularly polycarbonate, and a combination of inorganic particles on the basis of silicone dioxide and polymer particles on an acrylate basis with core-shell morphology, as well as moulds made from this compound.
    Type: Application
    Filed: July 18, 2005
    Publication date: April 17, 2008
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Claus Rüdiger, Rüdiger Gorny, Marco Roelofs, Ilona Roelofs, Lars Roelofs, Jürgen Röhner, Peter Schwarz
  • Patent number: 7201964
    Abstract: A transparent sheet having improved optical properties is disclosed. The sheet that features a deviation angle ?? (min) according to DIN 52305-A-AS of ?2.0 and a refracting power D? (min) according to DIN 52305-A-AZ of ?0.05, is prepared by extruding a molding composition comprising linear (co)polycarbonate having weight average molecular weight of 25,000 to 31,000.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: April 10, 2007
    Assignee: Bayer Materialscience AG
    Inventors: Siegfried Anders, Rüdiger Gorny, Peter Schwarz, Claus Rüdiger, Jürgen Röhner