Patent ID: 7510703

Claim:
A silane, siloxane or polysiloxane merocyanine sulfone compound selected from the group consisting of those of the formulae (1), (2) and (3) below: in which: m=0 or 1; X is â€”Oâ€”, â€”NR 5 â€”, â€”SO 2 NHâ€”, wherein R 5 is hydrogen or a C 1 -C 5 alkyl radical; Y is a divalent C 1 -C 5 alkyl radical optionally substituted with C 1 -C 4 alkyl radicals and/or containing â€”Oâ€”, â€”Sâ€” atoms or with a â€”NR 1 group; the radicals R, which may be identical or different, are each a linear or branched and optionally halogenated C 1 -C 20 alkyl radical, a C 6 -C 12 aryl radical or a C 1 -C 10 alkoxy radical; a=0 to 3; R 1 is a linear or branched and optionally halogenated C 1 -C 20 alkyl radical or a C 6 -C 12 aryl radical; R 2 and R 3 , which may be identical or different, are each H, a C 1 -C 24 alkyl radical, a C 3 -C 10 cycloalkyl radical or a C 6 -C 20 aryl radical optionally substituted with alkyl or alkoxy radicals, with the proviso that R 2 and R 3 may together form, with the nitrogen atom from which they depend, a C 4 -C 6 cycle optionally interrupted by oxygen atoms or â€”NHâ€”, and with the further proviso that R 2 and R 3 cannot each be a hydrogen atom; A is a divalent radical selected from among methylene, ethylene or a group having one of the formulae (4), (5) or (6) below: in which: Z is a linear or branched, saturated or unsaturated C 1 -C 6 alkylene radical optionally substituted with a hydroxyl radical, or a linear or branched, saturated or unsaturated C 1 -C 8 alkyl radical; W is a hydrogen atom, a hydroxyl radical or a linear or branched, saturated or unsaturated C 1 -C 8 alkyl radical; p is 0 or 1; n=1 to 4 and when n=2, R 1 , R 2 , R 3 or R 4 is a divalent alkyl radical or R 2 and R 3 may together form with the nitrogen atom from which they depend, a C 4 -C 6 cycle optionally interrupted by oxygen atoms or â€”NHâ€”.