2-Propenenitrile, polymer with diethenylbenzene and ethenylbenzene, sulfonated 2-Propenenitrile, polymer with diethenylbenzene and ethenylbenzene,sulfonated 68442-37-5 Poly(acrylonitrile-co-divinylbenzene-co-styrene), sulfonated Styrene-divinylbenzene-acrylonitrile terpolymer, sulfonated