Photoactivatable nitrogen-containing bases based on...

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 487/04 (2006.01) C07C 211/09 (2006.01) C07C 211/27 (2006.01) C08J 3/28 (2006.01) C08K 5/3462 (2006.01) C09D 4/06 (2006.01) G03F 7/004 (2006.01) G03F 7/027 (2006.01) G03F 7/031 (2006.01) G03F 7/037 (2006.01) G03F 7/075 (2006.01)

Patent

CA 2283446

The invention relates to organic compounds having a molecular weight of less than 1000 comprising at least one structural unit of formula (I), in which R1 is an aromatic or heteroaromatic radical which is capable of absorbing light in the wavelength range from 200 to 650 nm and in doing so brings about cleavage of the adjacent carbon-nitrogen bond. The compounds represent photoinitiators for base-catalysable reactions. Other subjects of the invention are base- polymerizable or cross-linkable compositions comprising compounds having a structural unit of formula (I), a method of implementing photochemically induced, base-catalysed reactions, and the use of the compounds as photoinitiators for base-catalysed reactions.

L'invention concerne des composés organiques présentant un poids moléculaire inférieur à 1000, et comprenant au moins une unité structurelle selon la formule (I). Dans cette dernière, R1 est un radical aromatique ou hétéroaromatique qui peut absorber la lumière dans la gamme de longueurs d'onde comprise entre 200 et 650 nm pour assurer ainsi le clivage de la liaison carbone-azote adjacente. Les composés représentent des photoinitiateurs pour des réactions pouvant subir une catalyse basique. L'invention traite aussi de compositions pouvant subir une polymérisation basique ou une réticulation, comprenant des composés présentant l'unité structurelle de la formule (I). L'invention a aussi pour objet un procédé pour mettre en oeuvre des réactions induites par voie photochimique, pouvant subir une catalyse basique, et l'utilisation de ces composés comme photoinitiateurs pour des réactions pouvant subir une catalyse basique.

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