The invention relates to photopolymerizable compositions comprising as photoinitiator a borate of the formula I or I' [ STR 1 ] in which R.sub.1, R.sub.2 and R.sub.3 are, for example and independently of one another, phenyl or another aromatic hydrocarbon, with or without any heteroatoms, which radi
The invention relates to photopolymerizable compositions comprising as photoinitiator a borate of the formula I or I' [ STR 1 ] in which R.sub.1, R.sub.2 and R.sub.3 are, for example and independently of one another, phenyl or another aromatic hydrocarbon, with or without any heteroatoms, which radicals are unsubstituted or are substituted, or the radicals R.sub.1 and R.sub.2 form bridges to produce structures of the formulae II, IIa or IIb [ STR 2 ] with the provisos that not more than two of the radicals R.sub.1, R.sub.2 and R.sub.3 are identical and either at least two of the radicals R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or phenyl radicals which are substituted in both ortho-positions or at least one radical R.sub.1, R.sub.2 or R.sub.3 is a sterically bulky aryl radical and the remaining radicals of R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or are phenyl radicals which are substituted in at least one ortho-position; R.sub.4 is, for example, phenyl or C.sub.1 -C.sub.20 alkyl and G is a radical which is able to form positive ions. Additionally, the proviso is not all radicals R.sub.1, R.sub.2, R.sub.3 and R.sub.4 simultaneously are aromatic radicals.
대표청구항▼
[ What is claimed is:] [1.] A composition comprisinga) at least one polymerizable ethylenically unsaturated compound andb) at least one compound of the formula I or I' as unimolecular photoinitiator [ STR 117 ] in which R.sub.1, R.sub.2 and R.sub.3 independently of one another are phenyl or another
[ What is claimed is:] [1.] A composition comprisinga) at least one polymerizable ethylenically unsaturated compound andb) at least one compound of the formula I or I' as unimolecular photoinitiator [ STR 117 ] in which R.sub.1, R.sub.2 and R.sub.3 independently of one another are phenyl or another aromatic hydrocarbon, with or without any heteroatoms, which radicals are unsubstituted or are substituted 1-5 times by unsubstituted C.sub.1 -C.sub.20 alkyl, OR.sub.6 -substituted C.sub.1 -C.sub.20 alkyl, R.sub.7 R.sub.8 N-substituted C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl which is interrupted by one or more radicals O, S(O).sub.p or NR.sub.5, or the radicals phenyl or another aromatic hydrocarbon are substituted 1-5 times by OR.sub.6, R.sub.6 S(O).sub.p, R.sub.6 S(O).sub.2 O, R.sub.7 R.sub.8 N, R.sub.6 OC(O), R.sub.7 R.sub.8 NC(O), R.sub.9 C(O), R.sub.9 R.sub.10 R.sub.11 Si, R.sub.9 R.sub.10 R.sub.11,Sn, halogen, R.sub.9 R.sub.10 P(O).sub.q, CN, [ STR 118 ] or the radicals R.sub.2 and R.sub.3 form bridges to produce structures of the formula II, IIa or IIb [ STR 119 ] whose aromatic rings are unsubstituted or are substituted by C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl which is interrupted by one or more radicals O, S(O).sub.p or NR.sub.5, or the aromatic rings are substituted by OR.sub.6, R.sub.6 S(O).sub.p, R.sub.6 S(O).sub.2 O, R.sub.7 R.sub.8 N, R.sub.6 OC(O), R.sub.7 R.sub.8 NC(O), R.sub.9 C(O), R.sub.9 R.sub.10 R.sub.11,Si, halogen, R.sub.9 R.sub.10 P(O).sub.q or R.sub.9 R.sub.10 R.sub.11 Sn; with the provisos that not more than two of the radicals R.sub.1, R.sub.2 and R.sub.3 are identical and either at least two of the radicals R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or phenyl radicals which are substituted in both ortho-positions, or at least one radical R.sub.1, R.sub.2 or R.sub.3 is a sterically bulky aryl radical and the remaining radicals of R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or phenyl radicals which are substituted in at least one ortho-position;R.sub.1a is a divalent aromatic hydrocarbon radical which is unsubsituted or is substituted by C.sub.1 -C.sub.6 alkyl, OR.sub.6, S(O).sub.p R.sub.6, OS(O).sub.2 R.sub.6, NR.sub.8 R.sub.7, C(O)OR.sub.6, C(O)NR.sub.8 R.sub.7, C(O)R.sub.9, SiR.sub.9 R.sub.10 R.sub.11 or halogen, or R.sub.1a is phenyl-C.sub.1 -C.sub.6 alkylene;R.sub.4 is phenyl or another aromatic hydrocarbon radical, with or without any heteroatoms, which radicals are unsubstituted or substituted 1-5 times by unsubstituted C.sub.1 -C.sub.20 alkyl, OR.sub.6 -substituted C.sub.1 -C.sub.20 alkyl, R.sub.7 R.sub.8 N-substituted C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl which is interrupted by one or more radicals O, S(O).sub.p or NR.sub.5, or the radicals phenyl or another aromatic hydrocarbon are substituted 1-5 times by OR.sub.6, R.sub.6 S(O).sub.p, R.sub.6 S(O).sub.2 O, R.sub.7 R.sub.8 N, R.sub.6 OC(O), R.sub.7 R.sub.8 NC(O), R.sub.9 C(O), R.sub.9 R.sub.10 R.sub.11 Si, R.sub.9 R.sub.10 R.sub.11 Sn, halogen, R.sub.9 R.sub.10 P(O).sub.q, CN, [ STR 120 ] or R.sub.4 is C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl which is interrupted by one or more radicals O, S(O).sub.p or NR.sub.5, or R.sub.4 is C.sub.3 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.8 alkenyl, phenyl-C.sub.1 -C.sub.6 alkyl or naphthyl-C.sub.1 -C.sub.3 alkyl, where the radicals C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.8 alkenyl, phenyl-C.sub.1 -C.sub.6 alkyl or naphthyl-C.sub.1 -C.sub.3 alkyl are unsubstituted or are substituted by OR.sub.6, R.sub.6 S(O).sub.p, R.sub.6 S(O).sub.2 O, R.sub.7 R.sub.8 N, R.sub.6 OC(O), R.sub.7 R.sub.8 NC(O), R.sub.9 C(O), R.sub.9 R.sub.10 R.sub.11 Si, R.sub.9 R.sub.10 R.sub.11,Sn, halogen, R.sub.9 R.sub.10 P(O).sub.q, or CN; [ STR 121 ] n is 0, 1 or 2; m is 2 or 3;p is 0, 1 or 2;q is 0 or 1;E is R.sub.21 R.sub.22 R.sub.23 P, R.sub.7 R.sub.7a R.sub.8 N or R.sub.6 R.sub.6a S;R.sub.5 is hydrogen, C.sub.1 -C,.sub.2 alkyl, phenyl-C.sub.1 -C.sub.6 alkyl or phenyl, where the radicals phenyl-C.sub.1 -C.sub.6 alkyl or phenyl are unsubstituted or are substituted 1-5 times by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.12 alkoxy or halogen;R.sub.6 and R.sub.6a are unsubstituted C.sub.1 -C.sub.12 alkyl, halogen-substituted C.sub.1 -C.sub.12 alkyl, phenyl-C.sub.1 -C.sub.6 alkyl, phenyl, where the radicals phenyl-C.sub.1 -C.sub.6 alkyl or phenyl are unsubstituted or are substituted 1-5 times by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.12 alkoxy or halogen;R.sub.7, R.sub.7a and R.sub.8 independently of one another are unsubstituted C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy-substituted C.sub.1 -C.sub.12 alkyl, halogen-substituted C.sub.1 -C.sub.12 alkyl, OH-substituted C.sub.1 -C.sub.12 alkyl, COOR.sub.6 -substituted C.sub.1 -C.sub.12 alkyl, CN-substituted C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.12 cycloalkyl, phenyl-C.sub.1 -C.sub.6 alkyl or phenyl, where the radicals phenyl-C.sub.1 -C.sub.6 alkyl or phenyl are unsubstituted or are substituted 1-5 times by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.12 alkoxy or halogen, or R.sub.7 and R.sub.8, together with the N atom to which they are attached, form a 5- or 6-membered ring which optionally additionally contains O or S atoms;R.sub.9, R.sub.10 and R.sub.11 independently of one another are C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.12 cycloalkyl, phenyl-C.sub.1 -C.sub.6 alkyl or phenyl, where the radicals phenyl-C.sub.1 -C.sub.6 alkyl or phenyl are unsubstituted or are substituted 1-5 times by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.12 alkoxy or halogen;R.sub.12, R.sub.13, R.sub.14 and R.sub.15 independently of one another are hydrogen, unsubstituted C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy-substituted C.sub.1 -C.sub.12 alkyl, unsubstituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-C.sub.1 -C.sub.6 alkyl-substituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-C.sub.1 -C.sub.12 alkoxy- substituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-halogen-substituted phenyl-C.sub.1 -C.sub.6 alkyl, unsubstituted phenyl, mono- to penta-C.sub.1 -C.sub.6 alkyl-substituted phenyl, mono- to penta-C.sub.1 -C.sub.12 alkoxy-substituted phenyl, mono- to penta-halogen-substituted phenyl, or the radicals R.sub.12, R.sub.13, R.sub.14 and R.sub.15 together form an aromatic ring to which further aromatic rings may be fused;R.sub.16, R.sub.17, R.sub.18,R.sub.18a, R.sub.19 and R.sub.20 independently of one another are hydrogen, unsubstituted C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy-substituted C.sub.1 -C.sub.12 alkyl, OH-substituted C.sub.1 -C.sub.12 alkyl, halogen-substituted C.sub.1 -C.sub.12 alkyl, unsubstituted phenyl, C.sub.1 -C.sub.12 alkyl-substituted phenyl, C.sub.1 -C.sub.12 alkoxy-substituted phenyl, OH-substituted phenyl or halogen-substituted phenyl;R.sub.21, R.sub.22 and R.sub.23 independently of one another are C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl or C.sub.3 -C.sub.12 cycloalkyl, where the radicals C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl and C.sub.3 -C.sub.12 cycloalkyl are unsubstituted or are substituted by R.sub.6 OCO or CN, or R.sub.21, R.sub.22 and R.sub.23 are unsubstituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-C.sub.1 -C.sub.6 alkyl-substituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-C.sub.1 -C.sub.12 alkoxy-substituted phenyl-C.sub.1 -C.sub.6 alkyl, mono- to penta-halogen-substituted phenyl-C.sub.1 -C.sub.6 alkyl, unsubstituted phenyl, mono-to penta-C.sub.1 -C.sub.6 alkyl-substituted phenyl, mono- to penta-C.sub.1 -C.sub.12 alkoxy-substituted phenyl or mono- to penta-halogen-substituted phenyl;X is N, S or O, h the proviso, that not all radicals R.sub.1, R.sub.2, R.sub.3 and R.sub.4 simultaneously are aromatic radicals; and G is a radical which is able to form positive ions.
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