Titanocenes and their use

C - Chemistry – Metallurgy – 07 – F

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260/383, 96/89,

C07F 7/28 (2006.01) C07F 17/00 (2006.01) C08F 2/50 (2006.01) C09D 11/10 (2006.01) G03F 7/029 (2006.01) G03F 7/031 (2006.01)

Patent

CA 1332949

Titanocenes with silylated .pi.-cyclopentadienyl ligands in which one or two carbo- or heterocyclic aromatic rings are bonded to the titanium, the aromatic rings being substituted by fluorine, -CF3, -C2F5, -CF2Cl or -CF2CH3 in at least one of the two ortho-positions relative to the metal-carbon bonds, are suitable as photoinitiators for the photopoly- merization of ethylenically unsaturated substrates. They are distinguished by a high sensitivity, stability to air and the action of heat, and a high activity in the region of UV light to visible light. They are furthermore readily soluble in the photopolymerizable compositions.

543474

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