Patents by Inventor Jian Zhong YI

Jian Zhong YI 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).

  • Method for producing C-Cmono alkanol amines using an acid cation exchanger as a catalyst
    Patent number: 11753364
    Abstract: A process for continuous production of C2-C4-monoalkanolamines by reaction of a corresponding C2-C4-alkylene oxide with a molar excess of ammonia (NH3), wherein aqueous ammonia is employed, in the liquid phase and in the presence of an acidic cation exchanger as catalyst which contains a crosslinked copolymer comprising acidic functional groups as the carrier matrix, wherein the cation exchanger has a total exchange capacity of not less than 1.8 eq/L.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: September 12, 2023
    Assignee: BASF SE
    Inventors: Christian Gruenanger, Gabriele Iffland, Zeljko Kotanjac, Hermann Luyken, Thomas Krug, Jian Zhong Yi, Johann-Peter Melder
  • METHOD FOR PRODUCING C2-C4 MONO ALKANOL AMINES USING AN ACID CATION EXCHANGER AS A CATALYST
    Publication number: 20210363097
    Abstract: A process for continuous production of C2-C4-monoalkanolamines by reaction of a corresponding C2-C4-alkylene oxide with a molar excess of ammonia (NH3), wherein aqueous ammonia is employed, in the liquid phase and in the presence of an acidic cation exchanger as catalyst which contains a crosslinked copolymer comprising acidic functional groups as the carrier matrix, wherein the cation exchanger has a total exchange capacity of not less than 1.8 eq/L.
    Type: Application
    Filed: January 28, 2019
    Publication date: November 25, 2021
    Inventors: Christian GRUENANGER, Gabriele IFFLAND, Zeljko KOTANJAC, Hermann LUYKEN, Thomas KRUG, Jian Zhong YI, Johann-Peter MELDER