Patents by Inventor Franz Josef Luxem

Franz Josef Luxem 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).

  • Polyester plasticizers for halogen-containing polymers
    Patent number: 6706806
    Abstract: A portion of the repeating units in polyesters useful as plasticizers for rigid organic polymers are derived from diethylene glycol and at least one dicarboxylic acid. The percentage of these repeating units that can be present in polyesters that are compatible with the organic polymer into which they are incorporated is inversely proportional to the weight average molecular weight of the polyester.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: March 16, 2004
    Assignee: Velsicol Chemical Corporation
    Inventors: Jiamin Lang, Franz Josef Luxem, Bruce E. Streeter, Bruce E. Stanhope, Eric R. Zimmermann
  • Polyester plasticizers for halogen-containting polymers
    Publication number: 20030114564
    Abstract: A portion of the repeating units in polyesters useful as plasticizers for rigid organic polymers are derived from diethylene glycol and at least one dicarboxylic acid. The percentage of these repeating units that can be present in polyesters that are compatible with the organic polymer into which they are incorporated is inversely proportional to the weight average molecular weight of the polyester.
    Type: Application
    Filed: December 20, 2000
    Publication date: June 19, 2003
    Applicant: Velsicol Chemical Corporation
    Inventors: Jiamin Lang, Franz Josef Luxem, Bruce E. Streeter, Bruce E. Stanhope, Eric R. Zimmermann
  • Continuous process for preparing benzoic acid esters
    Patent number: 6235924
    Abstract: The present invention provides a continuous series of at least 3 esterification reactions, each of which yields highly pure esters derived from benzoic and at least one alcohol selected from monohydric alcohols containing from 6 to 12 carbon atoms and dihydric alcohols containing from 2 to 8 carbon atoms. At least a portion of the esterification catalyst and high boiling impurities remaining following distillation of the desired ester are used in the reaction mixture for the next reaction of the series.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: May 22, 2001
    Assignee: Velsicol Chemical Corporation
    Inventors: Wesley Wayne McConnell, Bruce Edward Stanhope, Franz Josef Luxem