Patents by Inventor Wilfried Meichelböck

Wilfried Meichelböck 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).

  • Patent number: 8609883
    Abstract: The invention relates to a continuous method for producing acyl peroxides. According to said method, an acyl chloride, carboxylic acid anhydride or chloroformate is reacted with an organic hydroperoxide or hydrogen peroxide in at least two mixed reaction zones that are connected in series, the acyl compound, the peroxy compound and an aqueous solution of a base being supplied to the first reaction zone. The first reaction zone comprises a cycle for the two-phase reaction mixture via a heat exchanger in which the reaction mixture is cooled. The method allows the reaction to be carried out reliably and with high space-time yields.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: December 17, 2013
    Assignee: United Initiators GmbH & Co. KG
    Inventors: Hans Appel, Wilfried Meichelböck, Josef Helmut Weinmaier, Helmut Zellner
  • Patent number: 8017801
    Abstract: The invention relates to a method for producing acyl peroxides. According to the method, an acyl compound is reacted with an organic hydroperoxide and a base, to generate a two-phase mixture. The pH of the two-phase mixture is adjusted to 6 to 13. The obtained organic phase is extracted with an aqueous solution of a base and the aqueous extract is recirculated to the reaction step. The method according to the invention allows the recirculation of unreacted hydroperoxide to the reaction step.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: September 13, 2011
    Assignee: United Initiators GmbH & Co. KG
    Inventors: Hans Appel, Wilfried Meichelböck, Josef Helmut Weinmaier, Helmut Zellner
  • Publication number: 20100036152
    Abstract: The invention relates to a continuous method for producing acyl peroxides. According to said method, an acyl chloride, carboxylic acid anhydride or chloroformate is reacted with an organic hydroperoxide or hydrogen peroxide in at least two mixed reaction zones that are connected in series, the acyl compound, the peroxy compound and an aqueous solution of a base being supplied to the first reaction zone. The first reaction zone comprises a cycle for the two-phase reaction mixture via a heat exchanger in which the reaction mixture is cooled. The method allows the reaction to be carried out reliably and with high space-time yields.
    Type: Application
    Filed: June 18, 2007
    Publication date: February 11, 2010
    Inventors: Hans Appel, Wilfried Meichelböck, Josef Helmut Weinmaier, Helmut Zellner
  • Publication number: 20100022794
    Abstract: The invention relates to a method for producing acyl peroxides. According to said method, an acyl compound is reacted with an organic hydroperoxide and a base, the pH of the two-phase mixture so obtained is adjusted to 6 to 13, the obtained organic phase is extracted with an aqueous solution of a base and the aqueous extract is recirculated to the reaction step. The method according to the invention allows the recirculation of unreacted hydroperoxide to the reaction step.
    Type: Application
    Filed: June 18, 2007
    Publication date: January 28, 2010
    Inventors: Hans Appel, Wilfried Meichelböck, Josef Helmut Weinmaier, Helmut Zellner