Patents by Inventor Stefanie Derlin

Stefanie Derlin 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 preparing polymers from 3-methylbut-1-ene
    Patent number: 8202959
    Abstract: The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: June 19, 2012
    Assignee: Evonik Oxeno GmbH
    Inventors: Michael Grass, Franz Nierlich, Walter Kaminsky, Stefanie Derlin, Klaus-Diether Wiese, Dagmara Ortmann
  • Process for preparing polymers from 3-methylbut-1-ene
    Patent number: 8138293
    Abstract: The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: March 20, 2012
    Assignee: Evonik Oxeno GmbH
    Inventors: Michael Grass, Franz Nierlich, Walter Kaminsky, Stefanie Derlin, Klaus-Diether Wiese, Dagmara Ortmann
  • PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE
    Publication number: 20110201767
    Abstract: The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Applicant: Evonik Oxeno GmbH
    Inventors: Michael Graß, Franz Nierlich, Walter Kaminsky, Stefanie Derlin, Klaus-Diether Wiese, Dagmara Ortmann
  • PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE
    Publication number: 20090203858
    Abstract: The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.
    Type: Application
    Filed: May 11, 2007
    Publication date: August 13, 2009
    Applicant: EVONIK OXENO GMBH
    Inventors: Michael Grass, Franz Nierlich, Walter Kaminsky, Stefanie Derlin, Klaus-Diether Wiese, Dagmara Ortmann