28-03-2013 дата публикации
Номер: US20130075409A1
Принадлежит:
Fuel containers made from polyethylene compositions exhibiting improved creep resistance are provided. The polyethylene compositions include two components, a first component ethylene-based interpolymer, and a second component ethylene-based polymer. A process for producing a fuel container from the polyethylene compositions by blow molding is also provided. The fuel containers may include vehicle fuel tanks. 1. A fuel container comprising: [{'sub': '21', 'a first component comprising an ethylene-based interpolymer, wherein the first component is a heterogeneously branched linear or a homogeneously branched linear ethylene-based interpolymer, having a density from 0.922 g/cc to 0.945 g/cc, and a high load melt index Ibetween 0.1 and 1 g/10 min; and'}, 'a second component comprising an ethylene-based polymer,, 'a polyethylene composition comprising{'sub': '21', 'wherein the polyethylene composition has a density in the range of from 0.937 to 0.960 g/cc and a high load melt index Iin the range of from 3 to 15 g/10 min.'}2. The fuel container of claim 1 , wherein the polyethylene composition exhibits a creep strain claim 1 , measured according to ASTM D2990 at 60° C. and 2 MPa claim 1 , of less than or equal to 1.8 percent.3. The fuel container of claim 1 , wherein the polyethylene composition exhibits an environmental stress crack resistance of greater than 1000 hours according to ASTM D1693 claim 1 , method B claim 1 , in 10 percent aqueous Igepal (Octylphenoxy Poly(Ethyleneoxy)Ethanol claim 1 , Branched) CO-630 claim 1 , a Charpy Impact measured according to ISO-179 at −40° C. of at least 18 kJ/m claim 1 , and a tensile modulus measured according to ASTM D638 of at least 105 claim 1 ,000 psi.4. The fuel container of claim 1 , wherein the first component is an ethylene/α-olefin interpolymer.5. The fuel container of claim 4 , wherein the α-olefin is selected from the group consisting of 1-butene claim 4 , 1-pentene claim 4 , 1-hexene claim 4 , 1-heptene claim 4 , 1- ...
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