Use of organoclay in HDPE nanocomposites to provide barrier properties in containers and film
AssigneePolyOne Corporation
InventorsGuoqiang Qian, David Jarus, Vincent Zabrocki
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Abstract
HDPE nanocomposite is made by mixing HDPE with organoclay. Such HDPE nanocomposite contains concentrations of organoclay less than 4 weight percent. Unexpectedly, using less organoclay than that conventionally recommended, results in superior oxygen and water vapor transmission rates for HDPE compounds. The HDPE nanocomposite is useful for packaging films and containers for food or other perishables.
Claims20
A method of using organoclay to improve barrier properties of high density poly(ethylene), comprising the step of mixing organoclay into the high density poly(ethylene) to form a nano-high density poly(ethylene) compound, wherein the amount of organoclay is greater than 0 and less than about 4 weight percent.
An article formed from a compound comprising high density poly(ethylene) and greater than 0 and less than about four weight percent of organoclay, wherein the article has a lower water vapor transmission rate and a lower oxygen permeability than if the compound were to contain more than about four weight percent of organoclay.
Dependencies are inferred from the claim text.