Patent ID: 7915332

Claim:
An organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure X wherein Ar 1 , Ar 2 , and Ar 3 are independently C 3 -C 50 aromatic radicals; Ar 4 is a bond or a C 3 -C 50 aromatic radical; “a” is a number from 1 to about 200; “c” is a number from 0 to 3; R 1 is independently at each occurrence a halogen atom, a C 1 -C 20 aliphatic radical, a C 5 -C 20 cycloaliphatic radical, or a C 3 -C 50 aromatic radical; and R 2 is a halogen atom, a C 1 -C 20 aliphatic radical, a C 5 -C 20 cycloaliphatic radical, a C 3 -C 50 aromatic radical, or a polymer chain.