Polymer Compositions Having Improved Barrier Properties
AssigneeChevron Phillips Chemical Company LP
InventorsJim H. ADDCOX, Guylaine ST. JEAN
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Abstract
A composition comprising a polymer and a wax wherein the polymer has a melt index of from about 0.5 g/10 min to about 4 g/10 min, a density of equal to or greater than about 0.945 g/cc which when formed into a film displays a moisture vapor transmission rate of less than about 0.55 g-mil/100 in2 in 24 hours as determined in accordance with ASTM F 1249.
Claims20
A composition comprising a polymer and a wax wherein the polymer has a melt index of from about 0.5 g/10 min to about 4 g/10 min, a density of equal to or greater than about 0.945 g/cc which when formed into a film displays a moisture vapor transmission rate of less than about 0.55 g-mil/100 in2 in 24 hours as determined in accordance with ASTM F 1249.
A composition comprising a metallocene-catalyzed unimodal polyethylene homopolymer and an oxidized olefin wax wherein the oxidized olefin wax comprises one of more of the following:
- a) greater than 90 wt % olefins having from 20 to 24 carbon atoms and greater than 75 mol. % alpha olefins having from 20 to 24 carbon atoms;
- b) greater than 70 wt % olefins having from 24 to 28 carbon atoms and greater than 45 mol. % alpha olefins having from 24 to 28 carbon atoms;
- c) greater than 90 wt % olefins having from 26 to 28 carbon atoms and greater than 75 mol. % alpha olefins having from 26 to 28 carbon atoms;
- d) greater than 80 wt % olefins having at least 30 carbon atoms and greater than 45 mol. % alpha olefins having at least 30 carbon atoms;
- or
- e) greater than 85 wt % olefins having at least 30 carbon atoms and greater than 75 mol. % alpha olefins at least 30 carbon atoms.
Dependencies are inferred from the claim text.