Photo-latent titanium-chelate catalysts

Ti-chelate catalyst formulation, comprising

• (i) at least one compound of the formula IA
• wherein
• R1 denotes C6-C14aryl which is substituted by one or more R′2, R′3 or R′4;
• or the two R1 together are unsubstituted linear or branched C1-C12alkylene or are linear or branched C1-C12alkylene which is substituted by one or more phenyl, benzoyl, naphthyl or by naphthoyl,
• or the two R1 together are unsubstituted linear or branched C2-C12alkylene which is interrupted by one or more non-consecutive O-atoms or are linear or branched C2-C12alkylene which is interrupted by one or more non-consecutive O-atoms which is substituted by one or more phenyl, benzoyl, naphthyl or by naphthoyl,
• or the two R1 together are phenylene, biphenylene or naphthylene, wherein said phenylene, biphenylene or naphthylene are unsubstituted or are substituted by one or more R′2, R′3 or R′4,
• or the two R1 together are —(CH2)n-phenylene-(CH2)n—, wherein the CH2 groups optionally are substituted by C1-C20alkyl or C6-C14aryl;
• Y is
• Y1 is
• Y2 is
• Y3 is
• R2, R3, R4, R′2, R′3, and R′4 independently of each other are hydrogen, halogen, linear or branched C1-C20alkyl, C1-C20alkoxy, C6-C14aryl, C1-C20alkanoyl, C1-C20alkanoyloxy, C1-C20alkoxycarbonyl, C7-C15aroyl, C7-C15aroyloxy, nitrile, nitro, C1-C20alkylthio, C6-C14arylthio or NR8R9;
• R8 and R9 independently of each other are hydrogen, linear or branched C1-C20alkyl, benzyl, C7-C15aroyl, C1-C20alkanoyl, unsubstituted phenyl, phenyl which is substituted by one or more halogen, C1-C6alkoxy or by C1-C6alkyl, or R8 and R9 together with the N-atom to which they are attached form a 5- or 6-membered saturated or unsaturated ring, which ring optionally in addition to the N-atom comprises a further N-atom or O-atom and to which ring optionally one or two benzo rings are fused;
• R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20 and R21 independently of one another are hydrogen, linear or branched C1-C20alkyl, C6-C14aryl or halogen, provided that
• not more than one of R10, R11, R12 is hydrogen and not more than one of R13, R14, R15 is hydrogen and not more than one of R16, R17, R18 is hydrogen and not more than one of R19, R20, R21 is hydrogen, or R10 and R11, R13 and R14, R16 and R17, or R19 and R20 together with the C-atom to which they are attached form a 5 to 7 membered saturated ring;
• and
• (ii) at least one chelate ligand compound of the formula IIa, IIb or IIc
• wherein
• Y′ is
• Y′1 is
• and
• R′10, R′11, R′12, R′13, R′14 and R′15 have on of the meanings as given for R10, R11, R12, R13, R14, R15.