Patents by Inventor Diana WISCHANG

Diana WISCHANG 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).

  • Cellulose ethers substituted with hydroxyl and alkyne groups and with hydroxyalkyl, alkyne and azide groups, and use thereof as water-insoluble adhesives
    Patent number: 10800858
    Abstract: Nonionic, water-soluble cellulose ethers are disclosed with hydroxyalkyl groups and ?-alkynyl groups, each joined to the cellulose via an ether bond, the degree of molar substitution MS(alkyne) being in the range from 0.001 to 0.30. The cellulose ethers may further contain azido groups, preferably 3-azido-2-hydroxypropyl groups, likewise joined to the cellulose by an ether bond, the MS(AHP) being in the range from 0.001 to 0.3. To obtain an adhesive, cellulose ether is mixed with water or, if the cellulose ether contains no alkyne groups, is mixed additionally with a non-ionic cellulose ether containing ?-alkyne groups and hydroxyalkyl groups, each bonded to the cellulose by ether bonds. The mixture is applied to at least one of the surfaces to be bonded and then is contacted with a copper(I) catalyst or a ruthenium catalyst. The adhesive is especially suitable for bonding wood, paper, cardboard or other cellulosic material.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: October 13, 2020
    Assignee: SE Tylose GmbH & Co. KG
    Inventors: Mike Kleinert, Diana Wischang
  • Cellulose ethers substituted with hydroxyl and alkyne groups and with hydroxyalkyl, alkyne and azide groups, and use thereof as water-insoluble adhesives
    Publication number: 20170253674
    Abstract: Nonionic, water-soluble cellulose ethers are disclosed with hydroxyalkyl groups and ?-alkynyl groups, each joined to the cellulose via an ether bond, the degree of molar substitution MS(alkyne) being in the range from 0.001 to 0.30. The cellulose ethers may further contain azido groups, preferably 3-azido-2-hydroxypropyl groups, likewise joined to the cellulose by an ether bond, the MS(AHP) being in the range from 0.001 to 0.3. To obtain an adhesive, cellulose ether is mixed with water or. if the cellulose ether contains no alkyne groups, is mixed additionally with a non-ionic cellulose ether containing ?-alkyne groups and hydroxyalkyl groups, each bonded to the cellulose by ether bonds. The mixture is applied to at least one of the surfaces to be bonded and then is contacted with a copper(I) catalyst or a ruthenium catalyst. The adhesive is especially suitable for bonding wood, paper, cardboard or other cellulosic material.
    Type: Application
    Filed: February 28, 2017
    Publication date: September 7, 2017
    Inventors: Mike KLEINERT, Diana WISCHANG