Benzophenone derivatives useful as photoinitiators

C - Chemistry – Metallurgy – 07 – C

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C07C 69/76 (2006.01) C07C 205/61 (2006.01) C07C 255/57 (2006.01) C07C 309/58 (2006.01) C07C 317/44 (2006.01) C08F 2/50 (2006.01)

Patent

CA 2221599

Benzophenone compounds of general formula (I) wherein: each Z independently represents an alkylene polyol moiety or a polyalkylene polyol moiety, wherein hydroxyl groups of the polyol moiety are optionally alkylated; each Y independently represents an alkylene polyol moiety or a polyalkylene polyol moiety, wherein hydroxyl groups of the polyol moiety are optionally alkylated; or an alkoxy group; each E is independently selected from hydrogen or halogen atoms and alkyl, acyl, nitro, cyano, alkoxy, hydroxy, amino, alkylamino, sulphinyl, alkylsulphinyl, sulphonyl, alkylsulphonyl, sulphonate, amido, alkylamido, alkoxycarbonyl, halocarbonyl and haloalkyl groups; each F is independently selected from hydrogen or halogen atoms and alkyl, acyl, nitro, cyano, alkoxy, hydroxy, amino, alkylamino, sulphinyl, alkylsulphinyl, sulphonyl, alkylsulphonyl, sulphonate, amido, alkylamido, alkoxycarbonyl, halocarbonyl and haloalkyl groups; b represents 1 to 5; c represents 0 to 4; and p represents 0 to 5 and processes for their preparation are described. Compounds of general formula (I) are useful as photoinitiators.

L'invention concerne des composés benzophénone de la formule générale (I). Dans cette formule, chaque Z représente d'une manière indépendante un groupe alkylène polyol ou un groupe polyalkylène polyol, où les hydroxyles du polyol peuvent être alkylés; chaque Y représente d'une manière indépendante un groupe alkylène polyol ou un groupe polyalkylène polyol où les hydroxyles du polyol peuvent être alkylés, ou un groupe alcoxy; chaque E est choisi d'une manière indépendante parmi les atomes d'hydrogène ou d'halogènes et les groupes alkyle, acyle, nitro, cyano, alcoxy, hydroxy, amino, alkylamino, sulfinyle, alkylsulfinyle, sulfonyle, alkylsulfinyle, sulfonyle, alkylsulfonyle, sulfonate, amido, alkylamido, alcoxycarbonyle, halocarbonyle et haloalkyle; chaque F est choisi d'une manière indépendante parmi les atomes d'hydrogène ou d'halogènes et les groupes alkyle, acyle, nitro, cyano, alcoxy, hydroxy, amino, alkylamino, sulfinyle, alkylsulfinyle, sulfonyle, alkylsulfonyle, sulfonate, amido, alkylamido, alcoxycarbonyle, halocarbonyle et haloalkyle; b représente un nombre entre 1 et 5; c représente un nombre entre 0 et 4; et p représente un nombre entre 0 et 5. L'invention concerne également des procédés de préparation de ces composés. Les composés de la formule (I) sont utiles comme photoinitiateurs.

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