POLYMER COMPOSITIONS HAVING IMPROVED BARRIER PROPERTIES

摘要

A polymer having a melt index of from about 0.5 g/10 min to about 4.0 g/10 min and a density of equal to or greater than 0.96 g/cc which when formed into a 1-mil film displays a moisture vapor transmission rate ranging from equal to or greater than about 0 to equal to or about 20% greater than X where X = k1 {-61.95377 + 39.52785(MZ/MW) - 8.16974(MZ/MW)2 + 0.55114(MZ/MW)3} + k2{-114.01555(?) + 37.68575(MZ/MW)(?) - 2.89177(MZ/MW)2(?)} + k3 { 120.37572(?)2 - 25.91177(MZ/MW)(?)2} + k4{ 18.03254(?)3} when MW is from about 100 kg/mol to about 180 kg/moL; MZ is from about 300 kg/mol to about 1000 kg/mol; ? is from about 0.01S to about 0.35s; k1 is 1 g/100in2·day; k2 is 1 g/100in2·day·s; k3 is 1 g/100in2·day·s2; and k4 is 1 g/100in2·day·s3.