Patents by Inventor Sonja Menz

Sonja Menz 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: 20220127381
    Abstract: A process for producing a crosslinked cellulose ether including the steps of (i) contacting at least one cellulose material with a mixture comprising (ia) at least one crosslinking agent and (ib) at least one alkalization reagent to form an activated cellulose material; and (ii) contacting the activated cellulose material of step (i) with at least one etherification reagent; wherein the at least one etherification reagent reacts with the activated cellulose material to form the crosslinked cellulose ether; and a crosslinked cellulose ether produced by the above process.
    Type: Application
    Filed: April 17, 2020
    Publication date: April 28, 2022
    Inventors: Alexandra Hild, Jöerg Neubauer, Sonja Menz, Matthias Sprehe, Michael Schreck
  • Publication number: 20220112311
    Abstract: A process for producing a crosslinked cellulose ether including the steps of: (a) contacting at least one cellulose material with at least one alkalization reagent to form an activated cellulose material; (b) contacting the activated cellulose material of step (a) with at least one etherification reagent to form an uncrosslinked cellulose ether; (c) subjecting the cellulose ether of step (b) to a simultaneous or stepwise washing and/or granulating step; (d) adding at least one crosslinking agent to the uncrosslinked cellulose ether during the washing and/or granulating of step (c) to form a crosslinked cellulose ether; and (e) any other optional components desired; and a crosslinked cellulose ether produced by the above process.
    Type: Application
    Filed: April 17, 2020
    Publication date: April 14, 2022
    Inventors: Alexandra Hild, Jöerg Neubauer, Sonja Menz
  • Publication number: 20220081362
    Abstract: Described herein are emulsion polymers, spray dried powders made with said emulsion polymers, and cementitious compositions made with said emulsion polymers or said spray dried powders. Emulsion polymers described herein comprise a shell portion comprising an alkali soluble resin (ASR), a core portion formed from polymerized units of at least one hydrophobic ethylenically unsaturated monomer, wherein no crosslinker is present when the shell portion and core portion are combined, and a nonionic water-soluble polymer.
    Type: Application
    Filed: March 25, 2020
    Publication date: March 17, 2022
    Applicants: Dow Global Technologies LLC, Rohm & Haas Company, Dow Produktions Und Vertriebs GMBH & Co. OHG
    Inventors: Margarita Perello, Ligeng Yin, Sonja Menz, Joerg Neubauer, Jing Meng
  • Publication number: 20180319941
    Abstract: The present invention provides additives for dry mix or tape joint compound compositions comprising one or more cellulose ether powders containing on its surface one or more hydrophobic alkali swellable emulsion polymer (HASE), preferably, one that is not crosslinked or which comprises, in copolymerized form, no multi-ethylenically unsaturated monomer, and, optionally, an inorganic basic filler. The present invention also provides methods to make the additive comprising kneading at from 50 to 120° C. a wet cellulose ether mixture containing from 50 to 80 wt. % of water with from 0.5 to 25 wt. %, based on total cellulose ether solids, of the hydrophobic alkali swellable emulsion polymer; if desired, adding an inorganic basic filler, and drying and grinding. The additive can be combined with 0.1 to 20 wt. %, based on total cellulose ether solids, of a dry polyacrylamide.
    Type: Application
    Filed: November 16, 2016
    Publication date: November 8, 2018
    Inventors: Joerg Neubauer, Anette Wagner, Sonja Menz
  • Publication number: 20180044239
    Abstract: The present invention provides additives for dry mix or tape joint compound compositions comprising one or more cellulose ether powders containing on its surface a polymeric additive chosen from polymeric colloidal stabilizers, polymeric fluidizers and combinations thereof. The additive is formed by methods of kneading at from 50 to 120° C. a wet cellulose ether mixture containing from 60 to 80 wt. % of water with from 0.1 to 10 wt. %, based on total cellulose ether solids, of a polymeric additive chosen from polymeric colloidal stabilizers, and polymeric fluidizers, and combinations thereof to form the additive; drying and grinding the additive; and, combining the additive with 0.1 to 20 wt. %, based on total cellulose ether solids, of a dry polyacrylamide.
    Type: Application
    Filed: March 28, 2016
    Publication date: February 15, 2018
    Inventors: Sonja Menz, Anette Wagner