Patents by Inventor Andre Rapthel

Andre Rapthel 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: 11254815
    Abstract: The invention relates to a process of preparing a polyolefin polylactic acid polymer blend comprising the steps of i) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof, ii) providing polylactic acid, iii) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof grafted with at least one epoxide-functional monomer, iv) providing a polylactic acid grafted with at least one carboxylic acid or carboxylic anhydride functional monomer, v) mixing the components i) to iv) at elevated temperature in a range from 150° C. to 260° C., and wherein component i) is provided in an amount of 5.0 to 50.0% by weight, component ii) is provided in an amount of 40.0 to 90.0% by weight, component iii) is provided in an amount of 1.0 to 20.0% by weight, and component iv) is provided in an amount of 1.0 to 15.0% by weight, calculated on the sum of components i) to iv).
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 22, 2022
    Assignee: BYK-CHEMIE GMBH
    Inventors: Inno Rapthel, Frederik Piestert, Andre Rapthel, Thorsten Kröller
  • Publication number: 20210340305
    Abstract: A composition is provided comprising an epoxide functional polymer comprising epoxide functional groups, wherein the epoxide functional polymer has a number average molecular weight of 1000 to 10.000 g/mol and a grafted polylactic acid, wherein the polylactic acid is grafted with an acid-functional ethylenically unsaturated polymerizable monomer and/or an acid anhydride-functional ethylenically unsaturated polymerizable monomer and has a total amount of carboxylic acid groups and carboxylic acid anhydride groups between 10.0 and 60.0 mg KOH/g.
    Type: Application
    Filed: October 7, 2019
    Publication date: November 4, 2021
    Inventors: Inno Rapthel, Frederik Piestert, Evert Jan Aalderink, Lisa Höhm, Patricia Oostendorp, Thorsten Kröller, Andre Rapthel
  • Publication number: 20210198407
    Abstract: A grafted polylactic acid is provided, wherein the grafted polylactic acid contains carboxylic acid end groups in an amount from 1.0 to 10.0 mg KOH/g and contains epoxide groups in an amount from 0.005 to 0.500 mmol/g.
    Type: Application
    Filed: July 11, 2019
    Publication date: July 1, 2021
    Inventors: Inno Rapthel, Frederik Piestert, Andre Rapthel, Thorsten Kröller, Patricia Oostendorp, Lisa Bachmann
  • Publication number: 20200332111
    Abstract: The invention relates to a process of preparing a polyolefin polylactic acid polymer blend comprising the steps of i) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof, ii) providing polylactic acid, iii) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof grafted with at least one epoxide-functional monomer, iv) providing a polylactic acid grafted with at least one carboxylic acid or carboxylic anhydride functional monomer, v) mixing the components i) to iv) at elevated temperature in a range from 150° C. to 260° C., and wherein component i) is provided in an amount of 5.0 to 50.0% by weight, component ii) is provided in an amount of 40.0 to 90.0% by weight, component iii) is provided in an amount of 1.0 to 20.0% by weight, and component iv) is provided in an amount of 1.0 to 15.0% by weight, calculated on the sum of components i) to iv).
    Type: Application
    Filed: October 11, 2018
    Publication date: October 22, 2020
    Inventors: Inno Rapthel, Frederik Piestert, Andre Rapthel, Thorsten Kröller