| abstract |
This invention relates to organic salt compositions useful in the preparation of organoclay compositions, polymer-organoclay composite compositions, and methods for the preparation of polymer nanocomposites. In one embodiment, the present invention provides a polymer-organoclay composite composition comprising (a) a polymeric resin; and (b) an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure (XXXIII) wherein Ar12, Ar13, Ar14 and Ar15 are independently C2-C50 aromatic radicals; and Ar16 is a C2-C200 aromatic radical, or a polymer chain comprising at least one aromatic group. |