UNSYMMETRIC 1,4-NAPHTHYLENE-CONTAINING POLYSULFONES

The design and synthesis of a new unsymmetric monomer, 1-chloro-4-(4-f luorobenzenesulfonyl)naphthalene (1), was accomplished and polymerized with several bisphenols. Three of these polymers represent the succes sful incorporation of a bulky 1,4-naphthylene unit into the commercial ly known polysulfones, Udel, Radel R and Victrex. All unsymmetric poly sulfones obtained were determined to be amorphous and displayed glass transition temperatures in the range of 218-288 degrees C. The gas per meability suffered while the permselectivity was marginally improved w ith naphthyl insertion into Udel.