摘要 |
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 pyridinium salt having structure XV wherein Ar<SUP>6</SUP>, Ar<SUP>7</SUP>, and Ar<SUP>8 </SUP>are independently C<SUB>2</SUB>-C<SUB>50 </SUB>aromatic radicals; "b" is a number from 0 to 2; "d" is a number from 0 to 4; R<SUP>3 </SUP>and R<SUP>4 </SUP>are independently at each occurrence a halogen atom, a C<SUB>1</SUB>-C<SUB>20 </SUB>aliphatic radical, a C<SUB>5</SUB>-C<SUB>20 </SUB>cycloaliphatic radical, or a C<SUB>2</SUB>-C<SUB>20 </SUB>aromatic radical; Z is a bond, a divalent C<SUB>1</SUB>-C<SUB>20 </SUB>aliphatic radical, a divalent C<SUB>5</SUB>-C<SUB>20 </SUB>cycloaliphatic radical, a divalent C<SUB>2</SUB>-C<SUB>20 </SUB>aromatic radical, an oxygen linking group, a sulfur linking group, a SO<SUB>2 </SUB>linking group, or a Se linking group; Ar<SUP>9 </SUP>is a C<SUB>10</SUB>-C<SUB>200 </SUB>aromatic radical, or a polymer chain comprising at least one aromatic group; and X<SUP>-</SUP> is a charge balancing counterion.
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