Patent ID: 7868080
Filing Date: 2011-01-11
Classification: B32B,C08J,C08L

Abstract:
1. A dry-blended nanocomposite composition comprising: 30 to 95 parts by weight of a polyolefin resin; 0.5 to 60 parts by weight of a melt blend including at least one resin having barrier properties and at least one nanocomposite having barrier properties, wherein the at least one resin having barrier properties is selected from the group consisting of an ethylene-vinyl alcohol (EVOH) copolymer, a polyamide, an ionomer and a polyvinyl alcohol (PVA), and wherein the at least one nanocomposite having barrier properties is selected from the group consisting of an EVOH copolymer/intercalated clay nanocomposite, a polyamide/intercalated clay nanocomposite, an ionomer/intercalated clay nanocomposite and a polyvinylalcohol/intercalated clay nanocomposite; and 1 to 30 parts by weight of a compatibilizer, wherein the resin having barrier properties, which is selected from the group consisting of an ethylene-vinyl alcohol (EVOH) copolymer, a polyamide, an ionomer and a polyvinyl alcohol (PVA), is not the resin comprised within the nanocomposite, which resin is one of an ethylene-vinyl alcohol (EVOH) copolymer, a polyamide, an ionomer or a polyvinyl alcohol (PVA), wherein the resin having barrier property and the nanocomposite having barrier property are molten-blended in a weight ratio from 25:75 to 75:25, wherein the intercalated clay comprises 1 to 45 wt % of an organic material, and wherein the organic material has at least one functional group selected from the group consisting of from primary ammonium to quaternary ammonium, phosphonium, maleate, succinate, acrylate, benzylic hydrogen, and oxazoline.