Patents by Inventor Laiying Zhu

Laiying Zhu 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).

  • Brønsted acidic room temperature ionic liquids each having a -protonated lactam cation and method for preparing the same
    Patent number: 7220869
    Abstract: The invention relates to a class of novel Brønsted acidic ionic liquids each having a lactam cation, and to a method for preparing the same through simple neutralization reaction of a lactam, which is available in large scale from industry, with a Brønsted inorganic or organic acid under room temperature. The properties of the lactam Brønsted acidic ionic liquids are as follows: they are water- and moisture-stable; they are more environmentally benign and lower cost than that of dialkylimidazolium salts; they have stronger Brønsted acidity and can be used as acidic catalysts and media instead of inorganic corrosive acids, such as concentrated sulfuric acid and hydrofluoric acid, in many acid-catalyzed reactions; and they can also be used as green media for extraction and separation.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: May 22, 2007
    Assignee: Lanzhou Institute of Chemical Physics Chinese Academy of Sciences
    Inventors: Youquan Deng, Zhengyin Du, Shu Guo, Zuopeng Li, Laiying Zhu
  • Bronsted acidic room temperature ionic liquids each having a N-protonated lactam cation and method for preparing the same
    Publication number: 20070021604
    Abstract: The invention relates to a class of novel Brønsted acidic ionic liquids each having a lactam cation, and to a method for preparing the same through simple neutralization reaction of a lactam, which is available in large scale from industry, with a Brønsted inorganic or organic acid under room temperature. The properties of the lactam Brønsted acidic ionic liquids are as follows: they are water- and moisture-stable; they are more environmentally benign and lower cost than that of dialkylimidazolium salts; they have stronger Brønsted acidity and can be used as acidic catalysts and media instead of inorganic corrosive acids, such as concentrated sulfuric acid and hydrofluoric acid, in many acid-catalyzed reactions; and they can also be used as green media for extraction and separation.
    Type: Application
    Filed: July 21, 2005
    Publication date: January 25, 2007
    Inventors: Youquan Deng, Zhengyin Du, Shu Guo, Zuopeng Li, Laiying Zhu