A composite material was prepared by ion exchange between the ammonium salt of the a,#omega#-diamine-terminated oligo(butadiene-co-acrylonitrile) (ATBN) and the interlamellar cation of the montmorillonite (Na-MMT). Grafted free radical polymerization of both oligo(oxyethylene)methacrylate and chloromethylstyrene supported onto the above composite was prepared. The chloromethyl groups were modified to produce onium salts which are suitable as phase transfer catalysts. The catalytic activities were investigated in nucleophilic reactions of thiocyanate, cyanate and nitrite with alkyl or aryl halides. The effect of the nature and structure of the support, amount of catalyst, solvent, and the temperature on the rate of reactions were studied.
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