Patent ID: 7820248

Claim:
A dual thermal and ultraviolet radiation curable coating composition, comprising a) at least an ethylenically unsaturated compound; b) a thermal initiator effective to enable IR-curing or NIR-curing of the ethylenically unsaturated compound; c) a photoinitiator effective to enable UV-curing of the ethylenically unsaturated compound; wherein the thermal initiator is a hydroxylamine ester which has a structural element of formula (I) or formula (I′) or a polymeric hydroxylamine ester which has a repetitive structural unit of formula (II) or (II′) wherein X is hydrogen, C 1 -C 36 alkyl, C 2 -C 36 alkenyl, C 2 -C 18 alkinyl, C 6 -C 10 aryl, —O—C 1 -C 18 alkyl, —O—C 6 -C 10 aryl, —NH—C 1 -C 18 alkyl, —NH—C 6 -C 10 aryl, —N(C 1 -C 6 alkyl) 2 ; X′ is a direct bond or C 1 -C 36 alkylen, C 1 -C 36 , C 1 -C 36 alkinylene, —(C 1 -C 6 alkylene)-phenyl-(C 1 -C 6 alkylene) or a group G 1 , G 2 , G 3 and G 4 are independently of one another C 1 -C 4 alkyl, or G 1 and G 2 together and G 3 and G 4 together, or G 1 and G 2 together or G 3 and G 4 together are pentamethylene; G 5 and G 6 are independently of one another hydrogen or C 1 -C 4 alkyl; and R 1 is C 1 -C 12 alkyl, C 5 -C 7 cycloalkyl, C 7 -C 8 aralkyl, C 2 -C 18 alkanoyl, C 3 -C 5 alkenoyl or benzoyl.