Invention Application
US20160122448A1 POLYETHYLENE COMPOSITION FOR PIPE AND PIPE COATING APPLICATIONS 有权
用于管道和管道涂层应用的聚乙烯组合物

  • Patent Title: POLYETHYLENE COMPOSITION FOR PIPE AND PIPE COATING APPLICATIONS
  • Patent Title (中): 用于管道和管道涂层应用的聚乙烯组合物
  • Application No.: US14896843
    Application Date: 2014-09-24
  • Publication No.: US20160122448A1
    Publication Date: 2016-05-05
  • Inventor: Andrey BuryakKurt Stubenrauch
  • Applicant: BOREALIS AG
  • Applicant Address: AT Vienna
  • Assignee: Borealis AG
  • Current Assignee: Borealis AG
  • Current Assignee Address: AT Vienna
  • Priority: EP13004875.4 20131010
  • International Application: PCT/EP2014/002590 WO 20140924
  • Main IPC: C08F10/02
  • IPC: C08F10/02
POLYETHYLENE COMPOSITION FOR PIPE AND PIPE COATING APPLICATIONS
Abstract:
The present application relates to a polyethylene composition comprising a base resin being a copolymer of ethylene with at least one alpha olefin comonomer having from 3 to 12 carbon atoms, the base resin having a density of more than 940.0 kg/m3 and equal to or less than 952.5 kg/m3, determined according to ISO 1 183-1:2004, wherein the composition has a melt flow rate MFRS (190° C., 5 kg) of 0.10 to 3.0 g/10 min, determined according to ISO 1 133, a storage modulus of G′ (2 kPa) of 600 Pa to 900 Pa, a shear thinning index SHI2.7/210 of 20 to 50 and the composition has an elongation at break (EB) at −45° C. in dependence of the molar comonomer content (mol. CC) of the base resin following the following equation EB [%]≧175 [%/mol %]·mol. CC [mol %], whereby the elongation at break (EB) is determined according to ISO 527-1 at a temperature of −45° C. and the molar co-monomer content (mol. CC) reflects the molar content of alpha-olefin comonomer units in the total content of monomer units of the base resin, an article comprising such a polyethylene composition and the use of such a polyethylene composition for the production of an article.
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