Patent ID: 7371793

Claim:
A nanocomposite, comprising: a) at least one first non-functionalized polypropylene present in the nanocomposite at from ≧10 to ≦98 wt %, based on the total weight of the nanocomposite, said first non-functionalized polypropylene having an Mw/Mn of 1.8 to 3; b) at least one second polypropylene comprising stabilization functionality, said stabilization functionality selected from one or more of phenols, substituted phenols or combinations thereof, and said stabilization functionality being present in said stabilization functionalized polypropylene from ≧0.05 to ≦15 wt %, based on the total weight of said of the polypropylene comprising stabilization functionality, where the second polypropylene comprising stabilization functionality is present in said nanocomposite at from ≧10 to ≦90 wt. %, based on the total weight of the nanocomposite; c) an organo-clay selected from one or mare of moatmorillonite, sodium montmorillonite, calcium montmorillonite, magnesium montmorillonite, nontronito, boidellite, volkonakoite, laponite, hectorite, saponite, sauconite, magadite, kenysite, sobockite, svindordite, stevensite, vermiculite, halloysite, aluininate oxides, hydrotalcite, illite, reotorite, tarosovite, ledikite or florine mica, and wherein said organo-clay is present in said nanocomposite from ≧1 or ≦30 weight %, based on the total weight of the nanocomposite, and where the nanoclay further comprises one or more of hexyl ammonium ion, octyl ammonium ion, 2-ethylhexyl ammonium ion, dodecyl ammonium ion, octadecyl ammonium ion, dioctyl dimethyl ammonium ion, trioctyl ammonium ion, distearyl ammonium ion, ammonium salt, pyridinium salt, sulfonium salt, phosphonium salt; and d) optionally, an ethylene-propylene elastomeric copolymer or an isobutylene rubber present in the nanocomposite at ≧2 to ≦70 wt %, based on the total weight of the nanocomposite.