US2011184113A1PendingUtilityA1

Exfoliated nanocomposites and articles containing same

48
Individually held — no corporate assignee on recordPriority: Sep 29, 2008Filed: Mar 31, 2011Published: Jul 28, 2011
Est. expirySep 29, 2028(~2.2 yrs left)· nominal 20-yr term from priority
Inventors:Mark R. MisDouglas R. RobelloThomas N. BlantonCraig L. Barnes
C08K 9/04C08K 3/346
48
PatentIndex Score
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Claims

Abstract

A polymeric nanocomposite comprises a non-polar hyperbranched polystyrene resin. An exfoliated or intercalated onium functionalized clay is dispersed within the resin. Such nanocomposites are more compatible with non-polar polymer matrices used in various articles of manufacture.

Claims

exact text as granted — not AI-modified
1 . An article comprising a matrix and a polymeric nanocomposite comprising a non-polar hyperbranched polystyrene resin and having dispersed therein an exfoliated or intercalated onium functionalized clay. 
     
     
         2 . The article of  claim 1  that is in the form of a sheet or panel. 
     
     
         3 . The article of  claim 1  that has been shaped by a molding processing. 
     
     
         4 . The article of  claim 1  wherein the weight ratio of said matrix to said polymeric nanocomposite is from about 10:1 to about 100:1. 
     
     
         5 . The article of  claim 1  wherein said matrix is a polymeric matrix. 
     
     
         6 . The article of  claim 1  wherein said polymeric nanocomposite is substantially exfoliated. 
     
     
         7 . The article of  claim 1  wherein said polymeric nanocomposite comprises a smectite clay. 
     
     
         8 . The article of  claim 1  wherein said hyperbranched polystyrene has a molecular weight of from about 2,000 to about 1,000,000. 
     
     
         9 . The article of  claim 1  wherein the weight ratio of said onium functionalized clay to said hyperbranched polystyrene is from about 1:1 to about 0.1:1. 
     
     
         10 . The article of  claim 1  wherein said hyperbranched polystyrene resin has from 95% to 100% of its recurring units that are derived unsubstituted styrene. 
     
     
         11 . The article of  claim 1  wherein said clay is a montmorillonite, hectorite, saponite, nontronite, beidellite, volhonskoite, sauconite, magadiite, medmontite, kenyaite, or vermiculite. 
     
     
         12 . The article of  claim 1  wherein the clay has been pretreated with an onium salt.

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