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. 10, 2013
Filed:
May. 25, 2009
Mats Bäckman, Göteborg, SE;
Carl-gustaf Ek, Vastra Frölunda, SE;
Anneli Pakkanen, Västerskog, FI;
Magnus Palmlöf, Vastra Frölunda, SE;
Mats Bäckman, Göteborg, SE;
Carl-Gustaf Ek, Vastra Frölunda, SE;
Anneli Pakkanen, Västerskog, FI;
Magnus Palmlöf, Vastra Frölunda, SE;
Borealis AG, Vienna, unknown;
Abstract
The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 924 to 960 kg/m, a melt index MFRof from 0.5 to 6.0 g/10 min, a melt index MFRof from 0.1 to 2.0 g/10 min and a shear thinning index SHIof from 2 to 50. The compositions further have a level of volatile compounds of at most 100 ppm by weight and/or a homogeneity rating of at most 3. In addition the multimodal copolymer comprises: