The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Apr. 27, 2011
Michael Grass, Haltern am See, DE;
Franz Nierlich, Marl, DE;
Walter Kaminsky, Pinneberg, DE;
Stefanie Derlin, Reinbek, DE;
Klaus-diether Wiese, Haltern am See, DE;
Dagmara Ortmann, Wohlen, CH;
Michael Grass, Haltern am See, DE;
Franz Nierlich, Marl, DE;
Walter Kaminsky, Pinneberg, DE;
Stefanie Derlin, Reinbek, DE;
Klaus-Diether Wiese, Haltern am See, DE;
Dagmara Ortmann, Wohlen, CH;
Evonik Oxeno GmbH, Marl, DE;
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.