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
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Application No.: US14896843Application Date: 2014-09-24
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Publication No.: US20160122448A1Publication Date: 2016-05-05
- Inventor: Andrey Buryak , Kurt 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

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.
Public/Granted literature
- US09527934B2 Polyethylene composition for pipe and pipe coating applications Public/Granted day:2016-12-27
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