Novel N-ethyl-2-styrylquinolinium iodides as sensitizers in the photoinitiated free-radical polymerization of trimethylolopropane triacrylate. II

Results of kinetic studies of two-component photoinitiator systems used in the visible-light photoinduced polymerization of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate are presented. Nine different styrylquinolinum dyes coupled with n-butyltriphenylborate as a coinitiator have been used as photoinitiating systems. Reactive radicals that initiate the polymerization are formed by the well-known mechanism of photoinduced electron transfer between dye cations acting as electron acceptors and borate anions acting as electron donors.