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US 2012/0238665 A1Published application
Polycarbonate nanocomposites
AssigneeSabic Innovative Plastics IP B.V.
InventorsDaniel J. Brunelle, Martino Colonna, Maurizio Fiorini, Corrado Berti, Enrico Binassi
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Abstract
Nanocomposites comprising a sulfonated telechelic polycarbonate and an organically modified clay are disclosed. The polycarbonate nanocomposites have improved physical and mechanical properties.
Claims20
A nanocomposite comprising:
- at least one sulfonated telechelic polycarbonate;
- and
- at least one organically modified clay;
- wherein the sulfonated telechelic polycarbonate comprises sulfonate end groups and structural units derived from at least one dihydroxy compound and at least one diaryl carbonate ester;
- and
- wherein the sulfonated telechelic polycarbonate comprises at least 70 mole percent of sulfonate end groups, with respect to the total end groups present.
3 more elements
An article formed from a polycarbonate nanocomposite, the nanocomposite comprising:
- at least one sulfonated telechelic polycarbonate;
- and
- at least one organically modified clay;
- wherein the sulfonated telechelic polycarbonate comprises sulfonate end groups and structural units derived from at least one dihydroxy compound and at least one diaryl carbonate ester;
- and
- wherein the sulfonated telechelic polycarbonate comprises at least 70 mole percent of sulfonate end groups, with respect to the total end groups present.
3 more elements
A method for making a polycarbonate nanocomposite, comprising:
- reacting an initial mixture comprising at least one dihydroxy compound, at least one sulfobenzoic acid salt, and an organically modified clay to obtain an intermediate mixture;
- adding at least one activated carbonate to the intermediate mixture;
- and
- reacting the intermediate mixture with the activated carbonate to obtain the polycarbonate nanocomposite.
1 more element
Dependencies are inferred from the claim text.