Patents Assigned to Borealis Technology
  • Polymer composition for pipes
    Patent number: 6878784
    Abstract: A multimodal polymer composition for pipes is disclosed. The polymer is a multimodal polyethylene with a density of 0.930-0.965 g/cm3, an MFR5 of 0.2-1.2 g/10 min, an Mn of 8000-15000, an Mw of 180-330×103, and an Mw/Mn of 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).
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: April 12, 2005
    Assignee: Borealis Technology
    Inventors: Markku Asumalahti, Jari Äärilää{umlaut over ( )}, Ari Palmroos, Mats Bäckman, Anette Nilsson, Magnus Palmlöf