Patents by Inventor Kay Papstein

Kay Papstein 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).

  • Concentrated solutions of alkaline-earth metal oxides in aprotic solvents and method for the production thereof
    Patent number: 8956991
    Abstract: A concentrated solution of mixed alkaline-earth alkoxide compounds M(OCH2R6)2-x(OR7)x and an aluminum compound Al(OCH2R6)3-y(OR7)y, in aprotic solvents, wherein M is an alkaline-earth metal selected from among Mg, Ca, Ba, Sr; OCH2R6 is an alkoxide group comprising at least 3 and at most 40 C atoms and having a branch at the 2-position relative to the O-function, in other words R6 is CHR8R9, wherein R8, R9 are alkyl groups C1-C18 independently of each other; R7 is an alkyl group having 2-15 C atoms that is either linear or has a branch at ?the 3-position; and the sum of x and y is a number between 0.01 and 0.8.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: February 17, 2015
    Assignee: Chemetall GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Jens Röder, Martin Steinbild, Kay Papstein
  • CONCENTRATED SOLUTIONS OF ALKALINE-EARTH METAL OXIDES IN APROTIC SOLVENTS AND METHOD FOR THE PRODUCTION THEREOF
    Publication number: 20120149553
    Abstract: A concentrated solution of mixed alkaline-earth alkoxide compounds M(OCH2R6)2-x(OR7)x and an aluminum compound Al(OCH2R6)3-y(OR7)y, in aprotic solvents, wherein M is an alkaline-earth metal selected from among Mg, Ca, Ba, Sr; OCH2R6 is an alkoxide group comprising at least 3 and at most 40 C atoms and having a branch at the 2-position relative to the O-function, in other words R6 is CHR8R9, wherein R8, R9 are alkyl groups C1-C18 independently of each other; R7 is an alkyl group having 2-15 C atoms that is either linear or has a branch at ?the 3-position; and the sum of x and y is a number between 0.01 and 0.8.
    Type: Application
    Filed: June 17, 2010
    Publication date: June 14, 2012
    Inventors: Ulrich Wietelmann, Ute Emmel, Jens Röder, Martin Steinbild, Kay Papstein