Untitled

Abstract

> H > Cl have been established. Phase transfer catalyzed chlorination of poly (p-methyl styrene) occurs by the action of commercial aqueous sodium hypochlorite solution to produce the chloromethylated polystyrene, which is a key intermediate in the preparation of anion exchange resins [2], and for lithographic evaluation [3-5]. phosphonium salts such as p, p`-bis [(triphenylphosphonio) methyl] benzophenone are reported to be useful photoinitiators