Patents by Inventor Cornelia Zur Taschler

Cornelia Zur Taschler 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).

  • Process for the selective meta-chlorination of alkylanilines
    Patent number: 9193667
    Abstract: A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: November 24, 2015
    Assignee: LONZA LTD.
    Inventors: Nikolaus Bieler, Stefan Ellinger, Martina Furrer, Viktor Ladnak, Constanze Müller, Leo Schmid, Cornelia Zur Täschler
  • PROCESS FOR THE SELECTIVE META-CHLORINATION OF ALKYLANILINES
    Publication number: 20130338400
    Abstract: A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.
    Type: Application
    Filed: August 16, 2011
    Publication date: December 19, 2013
    Applicant: Lonza Ltd.
    Inventors: Nikolaus Bieler, Stefan Ellinger, Martina Furrer, Viktor Ladnak, Constanze Müller, Leo Schmid, Cornelia Zur Täschler
  • Tricyanoborates
    Patent number: 8283497
    Abstract: The present invention relates to novel tricyanoborates of the general formula Catn+[B(CN)3(XR1)]—n, wherein R1 is C1-6 alkyl, C2-6 alkenyl, C6-10 aryl or benzyl; X is oxygen or sulfur; and Catn+ is a cation with n being 1 or 2, which is selected from the group consisting of an inorganic cation and an organic cation; and also their preparation and use.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: October 9, 2012
    Assignee: Lonza Ltd.
    Inventors: Wolfgang Wenger, Cornelia Zur Taschler
  • Novel Tricyanoborates
    Publication number: 20120018676
    Abstract: The present invention relates to novel tricyanoborates of the general formula Catn+ [B(CN)3(XR1)]—n, wherein R1 is C1-6 alkyl, C2-6 alkenyl, C6-10 aryl or benzyl; X is oxygen or sulfur; and Catn+ is a cation with n being 1 or 2, which is selected from the group consisting of an inorganic cation and an organic cation; and also their preparation and use.
    Type: Application
    Filed: January 26, 2010
    Publication date: January 26, 2012
    Applicant: LONZA LTD.
    Inventors: Wolfgang Wenger, Cornelia Zur Taschler
  • PROCESS FOR THE PREPARATION OF ALKYL 3,3-DIALKOXYPROPIONATES
    Publication number: 20100217031
    Abstract: The present invention relates to a continuous process for preparing alkyl 3,3-dialkoxy-propionates of the formula (RO)2CHCH2CO2R, wherein R is C1-6 alkyl, by reacting ketene with an ortho formate of formula (RO)3CH in the presence of an acidic catalyst, characterized in that the reaction is carried out in a loop reactor.
    Type: Application
    Filed: October 29, 2008
    Publication date: August 26, 2010
    Inventors: Wolfgang Wenger, Cornelia Zur Täschler, Daniel Zollinger