Patents by Inventor Detlef Roederer

Detlef Roederer 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 synthesis of 3-methyl-pyridine
    Patent number: 9701634
    Abstract: The present invention discloses a process for the synthesis of 3-methyl-pyridine from formaldehyde, paracetaldehyde, ammonia and acetic acid, whereby said compounds are reacted and said process comprises the following parameters: a) a reaction temperature of 260-300° C.; b) a molar ratio of formaldehyde and paraldehyde (calculated as acetaldehyde) of 0.7-1.4 mol/mol: c) an ammonia concentration of 10-20 weight-% d) an acetic acid concentration of 4-20 weight-% e) a paraldehyde (calculated as acetaldehyde) concentration of 0.4-1.6 Mol/kg f) a retention time of 10-30 minutes in case of a continuous reaction and 10-90 minutes in case of a discontinuous reaction; and g) a reaction pressure of 30-130 bar.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: July 11, 2017
    Assignee: LONZA LTD
    Inventors: Detlef Roederer, Daniel Zollinger, Jean-Yves De Riedmatten
  • Process for the synthesis of 3-methyl-pyridine
    Publication number: 20110003997
    Abstract: The present invention discloses a process for the synthesis of 3-methyl-pyridine from formaldehyde, paracetaldehyde, ammonia and acetic acid, whereby said compounds are reacted and said process comprises the following parameters: a) a reaction temperature of 260-300° C.; b) a molar ratio of formaldehyde and paracetaldehyde of 0.7-1-4 Mol/Mol: c) an ammonia concentration of 10-20 weight-% d) an acetic acid concentration of 4-20 weight-% e) a paracetaldehyde concentration of 0.4-1.
    Type: Application
    Filed: June 24, 2010
    Publication date: January 6, 2011
    Inventors: Detlef Roederer, Daniel Zollinger, Jean-Yves De Riedmatten