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US 10,947,361 B2Granted
Ethylene polymer, stretched molded article and microporous membrane
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsShinsuke Mochizuki, Hidenobu Takeyama
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Abstract
The present invention presents an ethylene polymer, wherein the ethylene polymer has a weight average molecular weight (Mw) of 200,000 or more and 3,000,000 or less, a proportion of a component (α130) with the lowest mobility of 40% or more and 60% or less, and a ratio β/γ of a middle motion component (β) to a component (γ) with the highest mobility of 1.0 or more and 4.0 or less when a three-component approximation of free induction decay at 130° C. measured by a solid echo method of pulse NMR is performed.
Claims15
An ethylene polymer, wherein the ethylene polymer has
- a weight average molecular weight (Mw) of 200,000 or more and 3,000,000 or less,
- a proportion of a component (α130) with the lowest mobility of 40% or more and 60% or less and a ratio β/γ of a proportion of a middle motion component (β) to a proportion of a component (γ) with the highest mobility of 1.0 or more and 4.0 or less when a three-component approximation of free induction decay at 130° C. measured by a solid echo method of pulse NMR is performed, wherein the ethylene polymer has a molecular weight distribution (Mw/Mn) of 5 or more and 15 or less, and wherein the ethylene polymer has a content of one or more selected from the group consisting of Ti, Mg and Al of 50 ppm or less.
Dependencies are inferred from the claim text.