Patents by Inventor Ruth LOHWASSER

Ruth LOHWASSER 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: 20220144767
    Abstract: A process produces a mono vinyl thioether by reacting acetylene with a compound containing one thiol group and one hydroxy group, referred to as a thiol-hydroxy compound, where the reaction is performed at a pressure below 2 bars.
    Type: Application
    Filed: April 20, 2020
    Publication date: May 12, 2022
    Applicant: BASF SE
    Inventors: Ruth Lohwasser, Pavel Tuzina, Frank Bienewald, Dagmar Pascale Kunsmann-Keitel
  • Publication number: 20210206941
    Abstract: The present invention relates to a process for producing a shaped body by selective laser sintering of a sinter powder (SP). The sinter powder (SP) comprises at least one polyimide (P) and in the range from 10% to 50% by weight of at least one aluminosilicate. The at least one aluminosilicate has a D50 in the range from 2.5 to 4.5 ?m. The present invention further relates to shaped bodies obtainable by the process of the invention.
    Type: Application
    Filed: February 16, 2017
    Publication date: July 8, 2021
    Inventors: Claus GABRIEL, Ruth LOHWASSER, Rainer OSTERMANN, Simon GRAMLICH, Philipp KLOKE
  • Patent number: 10731035
    Abstract: A thermoplastic molding composition containing A) 20 to 99.9 wt % of a thermoplastic polyamide, B) 0.1 to 40 wt % of an alkenylsuccinic acid derivative obtained by reaction of polyiso-butene (B1) having a number-average molecular weight Mn of 10,000 to 50,000 at temperatures of 180° C. to 250° C. with maleic acid or derivatives thereof (B2) in a stoichiometric ratio of at least 2 equivalents of ?,?-unsaturated mono- and dicarboxylic acid or derivatives thereof (B2) per reactive double bond in the polyisobutene (B1) for a duration of at least 15 minutes to 10 hours and up to 10 bar of positive pressure, wherein the derivatives are anhydrides, mono- or dialkyl esters, and mixed esters, and wherein the reactive double bonds are the sum total of the terminal ?- and ?-double bonds in the polyisobutene (B1), and C) 0 to 60 wt % of further additives, wherein the weight percentages for the components A) to C) sum to 100%.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: August 4, 2020
    Assignee: BASF SE
    Inventors: Ruth Lohwasser, Natalie Beatrice Janine Herle, Rosa Corberan Roc, Axel Hust
  • Publication number: 20190264029
    Abstract: A thermoplastic molding composition containing A) 20 to 99.9 wt % of a thermoplastic polyamide, B) 0.1 to 40 wt % of an alkenylsuccinic acid derivative obtained by reaction of polyiso-butene (B1) having a number-average molecular weight Mn of 10,000 to 50,000 at temperatures of 180° C. to 250° C. with maleic acid or derivatives thereof (B2) in a stoichiometric ratio of at least 2 equivalents of ?,?-unsaturated mono- and dicarboxylic acid or derivatives thereof (B2) per reactive double bond in the polyisobutene (B1) for a duration of at least 15 minutes to 10 hours and up to 10 bar of positive pressure, wherein the derivatives are anhydrides, mono- or dialkyl esters, and mixed esters, and wherein the reactive double bonds are the sum total of the terminal ?- and ?-double bonds in the polyisobutene (B1), and C) 0 to 60 wt % of further additives, wherein the weight percentages for the components A) to C) sum to 100%.
    Type: Application
    Filed: June 8, 2017
    Publication date: August 29, 2019
    Inventors: Ruth LOHWASSER, Natalie Beatrice Janine HERLE, Rosa CORBERAN ROC, Axel HUST