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:
Sep. 21, 2010
Filed:
Feb. 09, 2009
Manfred Stadlbauer, Linz, AT;
Eberhard Ernst, Unterweitersdorf, AT;
Manfred Stadlbauer, Linz, AT;
Eberhard Ernst, Unterweitersdorf, AT;
Borealis Technology Oy, , FI;
Abstract
The present technology relates to a foam comprising a polypropylene material. The polypropylene material is produced in the presence of a metallocene catalyst, and the foam and/or the polypropylene has a branching index g' of less than 1.00 and a strain hardening index (SHI@1 s) of at least 0.30 measured by a deformation rate dε/dt of 1.00 sat a temperature of 180° C., where the strain hardening index (SHI) is defined as the slope of the logarithm to the basis 10 of the tensile stress growth function (log(η)) as a function of the logarithm to the basis 10 of the Hencky strain (log(ε)) in the range of Hencky strains between 1 and 3.