US 7,371,793 B2 | ||
Nanocomposite comprising stabilization functionalized thermoplastic polyolefins | ||
Caiguo Gong, Pearland, Tex. (US); Alan J. Oshinski, Friendswood, Tex. (US); Beverly J. Poole, Houston, Tex. (US); Jerry W. Ball, Conroe, Tex. (US); and Thomas W. Sykes, Santa Fe, Tex. (US) | ||
Assigned to ExxonMobil Chemical Patents Inc., Houston, Tex. (US) | ||
Filed on Mar. 15, 2004, as Appl. No. 10/800,455. | ||
Prior Publication US 2005/0203235 A1, Sep. 15, 2005 | ||
Int. Cl. C08K 9/04 (2006.01) |
U.S. Cl. 524—445 [524/447] | 5 Claims |
1. 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.
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