Patents by Inventor Anke Boumans

Anke Boumans 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).

  • Publication number: 20190161576
    Abstract: The invention relates to compositions comprising polycarbonate and to a mixture comprising a carboxylic acid and the glycerol and/or diglycerol esters thereof, to the use of the compositions for production of blends or mouldings and to mouldings obtainable therefrom. The compositions have improved rheological and optical properties.
    Type: Application
    Filed: May 19, 2017
    Publication date: May 30, 2019
    Inventors: Rolf WEHRMANN, Helmut Werner HEUER, Anke BOUMANS
  • Publication number: 20190153199
    Abstract: The invention relates to glass-fibre- and/or carbon-fibre-reinforced polycarbonate compositions having improved flowability coupled with good heat resistance and to articles of manufacture produced from said compositions, in particular those from the thin wall applications sector, for example housing parts for ultrabooks or smartphones. The compositions comprise at least one saturated or unsaturated monocarboxylic acid having a chain length of 6 to 30 carbon atoms and at least one ester of these monocarboxylic acids based on glycerol and/or diglycerol.
    Type: Application
    Filed: May 22, 2017
    Publication date: May 23, 2019
    Inventors: Rolf WEHRMANN, Helmut Werner HEUER, Anke BOUMANS
  • Publication number: 20190136047
    Abstract: The invention relates to compositions containing polycarbonate and carboxylic acid esters of isosorbide, to the use of the compositions for the production of blends or shaped parts and to molded parts obtained therefrom. The compositions have improved rheological and optical properties and an improved demolding and processing behavior in the injection-molding process.
    Type: Application
    Filed: April 13, 2017
    Publication date: May 9, 2019
    Inventors: Helmut Werner HEUER, Rolf WEHRMANN, Anke BOUMANS
  • Patent number: 10189941
    Abstract: The invention relates to polycarbonate compositions with an improved thermal behavior and improved slip characteristics, achieved by the use of oxidized, acid-modified polyethylene waxes.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 29, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans, Michael Erkelenz
  • Publication number: 20180355167
    Abstract: The invention relates to polycarbonate compositions having high flowability and good thermal properties, comprising specific glycidyl ether compounds and typically at least one additive from the group of the thermal stabilizers, UV stabilizers and/or demoulding agents, and to mouldings made from these compositions. The polycarbonate compositions have high flowability and good thermal properties. The invention also relates to the improvement in the flowability of polycarbonate melts.
    Type: Application
    Filed: December 8, 2016
    Publication date: December 13, 2018
    Inventors: Rolf WEHRMANN, Helmut Werner HEUER, Anke BOUMANS
  • Patent number: 10119009
    Abstract: The present invention relates to the use of diglycerol esters for enhancing the flowability of transparent polycarbonate compositions. Melt viscosities and melt volume flow rates are improved. In addition, the diglycerol esters also exert a positive effect on the optical properties by increasing the transmission of the compositions and reducing the yellowness index.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: November 6, 2018
    Assignee: Covestro Deutschland AG
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Publication number: 20180201780
    Abstract: The present invention relates to the use of diglycerol esters to enhance the flowability of graphite-containing, thermally conductive polycarbonate compositions. Melt viscosities and melt volume flow rates are improved.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 19, 2018
    Inventors: Helmut Werner HEUER, Rolf WEHRMANN, Anke BOUMANS, Michael ERKELENZ
  • Publication number: 20180201755
    Abstract: The present invention relates to the use of diglycerol esters to increase the flowability of impact-modified polycarbonate-containing compositions, without adverse effect on mechanical and thermal properties. Melt viscosities and melt volume flow rates are improved. In comparison with conventional flow improvers moreover smaller quantities of diglycerol esters are sufficient to achieve the desired flow improvement.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 19, 2018
    Inventors: ROLF WEHRMANN, Helmut Werner HEUER, Anke BOUMANS
  • Publication number: 20180179378
    Abstract: The invention relates to copolycarbonate compositions having cyclic and linear oligomers and improved optical properties, to their use for producing blends and moldings and to moldings obtained therewith.
    Type: Application
    Filed: July 31, 2015
    Publication date: June 28, 2018
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Patent number: 9969879
    Abstract: The invention relates to copolycarbonate compositions having branch structures and linear oligomers and improved flow properties, to their use for producing blends and moldings and to moldings obtained therewith.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 15, 2018
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Publication number: 20170362431
    Abstract: The invention relates to copolycarbonate compositions containing diglycerolesters, which have improved rheological as well as optical properties, to their use for producing blends, mouldings and to moldings obtained therewith.
    Type: Application
    Filed: November 26, 2015
    Publication date: December 21, 2017
    Inventors: Rolf WEHRMANN, Helmut Werner HEUERü, Anke BOUMANS
  • Publication number: 20170362410
    Abstract: The present invention relates to the use of diglycerol esters for enhancing the flowability of transparent polycarbonate compositions. Melt viscosities and melt volume flow rates are improved. In addition, the diglycerol esters also exert a positive effect on the optical properties by increasing the transmission of the compositions and reducing the yellowness index.
    Type: Application
    Filed: November 26, 2015
    Publication date: December 21, 2017
    Inventors: Rolf WEHRMANN, Helmut Werner HEUER, Anke BOUMANS
  • Publication number: 20170362430
    Abstract: The present invention relates to glass fibre, carbon fibre and/or carbon nanotube reinforced polycarbonate compositions comprising flame retardant, diglycerol monoester and optionally antidripping agent and having high flowability, excellent stiffness and possibly improved flame retardant properties. The present invention further relates to the use of the compositions according to the invention in particular in the manufacture of housing parts in the EE and IT sector, for example for electrical housings/junction boxes or for frames of LCD/LED screens and also for component parts for the manufacture of Ultrabooks.
    Type: Application
    Filed: November 26, 2015
    Publication date: December 21, 2017
    Inventors: Helmut Werner HEUER, Rolf WEHRMANN, Anke BOUMANS, Michael ERKELENZ, Hans FRANSSEN
  • Publication number: 20170355816
    Abstract: The invention relates to polycarbonate compositions with an improved thermal behaviour and improved slip characteristics, achieved by the use of oxidised, acid-modified polyethylene waxes.
    Type: Application
    Filed: December 2, 2015
    Publication date: December 14, 2017
    Inventors: Rolf WEHRMANN, Helmut Werner HEUER, Anke BOUMANS, Michael ERKELENZ
  • Patent number: 9783673
    Abstract: The invention relates to (co)polycarbonate compositions and molding compounds, characterized by improved rheological properties and a high heat deflection temperature.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: October 10, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans, Peter Weimar
  • Publication number: 20170233571
    Abstract: The invention relates to copolycarbonate compositions having branch structures and cyclic oligomers and improved flow properties, to their use for producing blends and moldings and to moldings obtained therewith.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 17, 2017
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Publication number: 20170226340
    Abstract: The invention relates to copolycarbonate compositions having branch structures and linear oligomers and improved flow properties, to their use for producing blends and moldings and to moldings obtained therewith.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 10, 2017
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Publication number: 20170218197
    Abstract: The invention relates to copolycarbonate compositions having cyclic and linear oligomers and improved flow properties, to their use for producing blends and moldings and to moldings obtained therewith.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 3, 2017
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Patent number: 9718951
    Abstract: The invention relates to (co)polycarbonate compositions and molding compounds, characterized by improved theological properties and a high heat deflection temperature.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: August 1, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Rolf Wehrmann, Helmut Werner Heuer, Anke Boumans
  • Patent number: 9651712
    Abstract: The invention relates to polymer compositions for the production of mouldings, in particular spectacles and eye-protection equipment, which comply with the provisions of EN 169 (welder protection standard) and EN 1836/2005 (signal light detection). The compositions and mouldings are in particular processable at temperatures above 265° C., recyclable and have a notched impact strength of at least 65 kJ/cm2, and they comply with the required optical standards mentioned above.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: May 16, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Michael Erkelenz, Rolf Wehrmann, Anke Boumans