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:
Apr. 12, 2005
Filed:
Jul. 01, 1999
Markku Asumalahti, Kerava, FI;
Jari Äärilää{umlaut Over ( )}, Porvoo, FI;
Ari Palmroos, Porvoo, FI;
Mats Bäckman, Göteborg, SE;
Anette Nilsson, Stora Höga, SE;
Magnus Palmlöf, Västra Frölunda, SE;
Markku Asumalahti, Kerava, FI;
Jari Äärilää{umlaut over ( )}, Porvoo, FI;
Ari Palmroos, Porvoo, FI;
Mats Bäckman, Göteborg, SE;
Anette Nilsson, Stora Höga, SE;
Magnus Palmlöf, Västra Frölunda, SE;
Borealis Technology, Porvoo, FI;
Abstract
A multimodal polymer composition for pipes is disclosed. The polymer is a multimodal polyethylene with a density of 0.930-0.965 g/cm, an MFRof 0.2-1.2 g/10 min, an Mof 8000-15000, an Mof 180-330×10, and an M/Mof 20-35, said multimodal polyethylene comprising a low molecular weight (LMW) ethylene homopolymer fraction and a high molecular weight (HMW) ethylene copolymer fraction, said HMW fraction having a lower molecular weight limit of 3500, and a weight ratio of the LMW fraction to the HMW fraction of (35-55):(65:45).