POLYMERIZATION OF DIALLYL ALKYL ISOCYANURATES

Polymerizations of several diallyl alkyl isocyanurates were investigat ed to explore in more detail the steric effect observed in the polymer ization of triallyl isocyanurate [3, 5], as compared to its isomer tri allyl cyanurate, by changing alkyl groups from methyl, propyl, hexyl, and octyl up to lauryl. The rate of polymerization, the gel point, the cyclization constant, and the primary chain length were evaluated. Fo r example, the primary chain length increased with an increase in the bulkiness of the alkyl group as expected, although in the polymerizati on of diallyl lauryl isocyanurate it decreased as a reflection of redu ced rate of propagation due to the enhanced steric effect arising from a very bulky lauryl group.