| CPC C08F 2/50 (2013.01) [B29C 64/129 (2017.08); C08F 220/20 (2013.01); C08F 220/56 (2013.01); C08F 222/102 (2020.02); C08F 222/103 (2020.02); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12)] | 20 Claims |
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1. A photocurable composition comprising:
a (co)monomer;
a photosensitizer having an absorption band, wherein at least a portion of the absorption band is located at one or more wavelength from 400 nm to 1400 nm, and wherein the photosensitizer comprises a xanthene of Formula III, a squaraine, a boron-dipyrromethene, a cyanine, a porphyrin, or a combination thereof;
wherein Formula III is:
 wherein
A is O, S, Se, Te, NRx, CRxRy, SiRxRy, or GeRxRy;
R17, R18, R19, R20, R21, R22, R23, R24, and R25 are each independently H, OH, halogen, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl, any of which is optionally substituted with halide, hydroxy, thiol, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof, or wherein, as valence permits, two or more of R17-R25, together with the atoms to which they are attached, form a 3-10 membered cyclic moiety, wherein any of the additional atoms are optionally heteroatoms and the 3-10 membered cyclic moiety is optionally substituted with halide, hydroxy, thioether, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof; and
Rx and Ry are independently H, OH, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl;
an acceptor co-initiator comprising a diphenyliodonium salt of Formula I:
 wherein
R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are each independently H, OH, halogen, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl, any of which is optionally substituted with halide, hydroxy, thiol, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof, or wherein, as valence permits, two or more of R1-R10, together with the atoms to which they are attached, form a 3-10 membered cyclic moiety, wherein any of the additional atoms are optionally heteroatoms and the 3-10 membered cyclic moiety is optionally substituted with halide, hydroxy, thioether, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof;
Rx and Ry are independently H, OH, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl; and
R11 is a hydroxyl anion, halide anion, nitrate anion, carboxylate anion, sulfonate anion, phosphate anion, borate anion, tetrafluoride anion, or hexafluoride anion, any of which is optionally substituted; and
a donor co-initiator comprising a borate salt of Formula II:
 wherein
R12, R13, R14, and R15 are each independently H, OH, halogen, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl, any of which is optionally substituted with halide, hydroxy, thiol, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof;
R16 is an ammonium cation, a phosphonium cation, a sulphonium cation, or a heteroaryl cation, any of which is optionally substituted with halide, hydroxy, thiol, carbonyl, alkoxy, alkylhydroxy, carboxyl, amino, amido, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, —NRxRy, —C(O)NRxRy, or a combination thereof; and
Rx and Ry are independently H, OH, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkylaryl, or heteroaryl.
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