Polymer composition for forming a melt-extruded film and composites thereof
AssigneeCelanese EVA Performance Polymers LLC
InventorsJeffrey Charles Haley, Robert Weber, Myra Sumague, Dirk Hair
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Abstract
A polymer composition that can be used to form a melt-extruded film is provided. The polymer composition may contain an olefinic polymer and a transition metal salt. By selectively controlling specific aspects of the polymer and the transition metal salt, as well as the relative concentration of each component, the present inventors have discovered that the resulting composition can exhibit a relatively fast oxidation rate, which has been found to improve the adhesion of the composition to a wide variety of substrates.
Claims20
A polymer composition comprising at least one ethylene vinyl acetate polymer in an amount of at least about 50 wt. % of the polymer composition and at least one transition metal salt in an amount of from about 10 to about 1,000 parts per million based on the weight of ethylene vinyl acetate polymers in the composition, wherein the polymer composition exhibits a heat flow of about 0.7 watts per gram or more after being exposed to an oxygen atmosphere at a temperature of 180° C. for a time period of about 100 minutes or less, wherein the ethylene vinyl acetate polymer has a vinyl acetate content of from about 5 wt. % to about 35 wt. % and a density of from about 0.900 to about 1.00 gram per cubic centimeter as determined in accordance with ASTM D1505-10.
Dependencies are inferred from the claim text.