| abstract |
A photoinitiator system comprising (a) at least one O-alkylated aromatic nitrogen-heterocycle amine oxide cation salt of the formula I, R is C1-C6alkyl; Y is hydrogen, C1-C6alkyl, Ca-C6alkoxy, or halogen; and L is a borate anion; and optionally (b) at least one electron donor compound, selected from the group consisiting of borates, thiols, amines, organotin compounds, phosphines, arsines, sulfinates, carboxylates or aluminates. |