Patents by Inventor Ralph Eickwinkel

Ralph Eickwinkel 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).

  • Method for preparing amino alkyl(meth)acrylates
    Patent number: 7078560
    Abstract: A process for the preparation of aminoalkyl (meth)acrylates by transesterification from C1–C4-alkyl (meth)acrylates and aminoalcohols is described, in which process the transesterification is carried out in the presence of at least one distannoxane of the general formula (1) wherein R=linear, cyclic or branched alkyl radical having from 1 to 6 carbon atoms, phenyl radical, and the radicals R may be identical or different from one another, Y=halogen, preferably Cl, Br; pseudo-halogen, preferably SCN; OH, OAc or OR, the radicals Y being identical or different from one another, as catalyst, and the use of the aminoalkyl (meth)acrylates prepared according to the process in the preparation of cationic monomers.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: July 18, 2006
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Jochen Houben, Ralph Eickwinkel, Oliver Hoppe, Bernd Kubiak, Erich Kuester
  • Method for preparing amino alkyl(meth)acrylates
    Patent number: 6979748
    Abstract: A process for the preparation of aminoalkyl (meth)acrylates by transesterification from C1-C4-alkyl (meth)acrylates and aminoalcohols is described, in which process the transesterification is carried out in the presence of at least one distannoxane of the general formula (1) wherein R=linear, cyclic or branched alkyl radical having from 1 to 6 carbon atoms, phenyl radical, and the radicals R may be identical or different from one another, Y=halogen, preferably Cl, Br; pseudo-halogen, preferably SCN; OH, OAc or OR, the radicals Y being identical or different from one another, as catalyst, and the use of the aminoalkyl(meth)acrylates prepared according to the process in the preparation of cationic monomers.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: December 27, 2005
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Jochen Houben, Ralph Eickwinkel, Oliver Hoppe, Bernd Kubiak, Erich Kuester
  • Method for preparing amino alkyl(meth)acrylates
    Publication number: 20050085660
    Abstract: A process for the preparation of aminoalkyl (meth)acrylates by transesterification from C1-C4-alkyl (meth)acrylates and aminoalcohols is described, in which process the trans-esterification is carried out in the presence of at least one distannoxane of the general formula (1) wherein R=linear, cyclic or branched alkyl radical having from 1 to 6 carbon atoms, phenyl radical, and the radicals. R may be identical or different from one another, Y=halogen, preferably Cl, Br; pseudo-halogen, preferably SCN; OH, OAc or OR, the radicals Y being identical or different from one another, as catalyst, and the use of the aminoalkyl (meth)acrylates prepared according to the process in the preparation of cationic monomers.
    Type: Application
    Filed: November 8, 2004
    Publication date: April 21, 2005
    Applicant: Stockhausen GmbH & Co. KG
    Inventors: Jochen Houben, Ralph Eickwinkel, Oliver Hoppe, Bernd Kubiak, Erich Kuester
  • Method for preparing amino alkyl(meth)acrylates
    Publication number: 20040092764
    Abstract: A process for the preparation of aminoalkyl (meth)acrylates by transesterification from C1-C4-alkyl (meth)acrylates and aminoalcohols is described, in which process the transesterification is carried out in the presence of at least one distannoxane of the general formula (1) 1
    Type: Application
    Filed: December 18, 2002
    Publication date: May 13, 2004
    Inventors: Jochen Houben, Ralph Eickwinkel, Oliver Hoppe, Bernd Kubiak, Erich Kuester