(2,6-DIPHENYL) PHENYL METHACRYLATE .2. RADICAL COPOLYMERIZATION WITH METHYL-METHACRYLATE - THE T(G)S OF ITS COPOLYMERS WITH AN ADDENDUM ON THE POLYMERIZATION OF (2,6-DIPHENYL) PHENYL ACRYLATE

The radical copolymerization of (2,6-diphenyl) phenyl methacrylate (1) with methyl methacrylate in DMF with AIBN at 70-degrees-C has the rea ctivity rators r1 = 0.071 and r2 = 1.42, from which Q1 = 1.45 and e(l) = 1.20. The copolymers had M(n) s in the range of 10,000-40,000 and T (g) s ranging from 406 to 480 K from which the hypothetical T(g) for p oly-1 was deduced as 500 K (227-degrees-C). Unlike 1, (2,6-diphenyl) p henyl acrylate could be polymerized to oligomers with M(n) of the orde r of 2500.