Patent ID: 7141104

Claim:
An ink composition for ink-jet printing comprising a UV-absorbing compound according to formula (I): wherein: R 1 is selected from the group consisting of hydrogen, a substituted or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom and may be cyclic, and a substituted or unsubstituted aromatic or heteroaromatic group; R 2 is selected from the group consisting of hydrogen, a substituted or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom, a substituted or unsubstituted aromatic or heteroaromatic group, —COR 4 and —NR 5 R 6 ; R 3 is selected from the group consisting of hydrogen, a substituted or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom, a substituted or unsubstituted aromatic or heteroaromatic group, and E″; E, E′ and E″ independently represent an electron withdrawing group; R 4 is selected from the group consisting of a hydrogen, a substituted or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom, a substituted or unsubstituted aromatic or heteroaromatic group, —OR 7 and —NR 8 R 9 M represents a hydrogen or a counter-ion R 5 and R 6 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom, a substituted or unsubstituted aromatic or heteroaromatic group, an acyl group, an oxalyl group, a sulphonyl group and a phosphoryl group; R 7 to R 9 are independently selected from the group consisting of hydrogen, a substitututed or unsubstituted, saturated or unsaturated aliphatic group, which may be interrupted by at least one heteroatom and a substituted or unsubstituted aromatic or heteroaromatic group; any of the possible combinations of R 2 , R 3 , E and E′ may combine to form a ring; R 5 and R 6 may represent the necessary atoms to form a 5- to 8-membered ring; and R 8 and R 9 may represent the necessary atoms to form a 5- to 8-membered ring.