Patent ID: 7064210

Claim:
A light resistant colorant obtained by coupling a colorant having at least one functional group selected from the group consisting of amino groups, hydroxyl groups caroxyl groups, and sulfonic acid groups with a compound represented by Formula 2: wherein R 1 is selected from the group consisting of a substituted or an unsubstituted alkylene of 1–20 carbon atoms and a substituted or an unsubstituted heteroalkylene of 1–20 carbon atoms; R 2 , R 3 and R 4 are independently selected from the group consisting of a hydrogen, a substituted or an unsubstituted alkyl of 1–4 carbon atoms, and a substituted or an unsubstituted heteroalkyl of 1–4 carbon atoms; R 5 is selected from the group consisting of a hydrogen, an alkyl of 1–20 carbon atoms, a heteroalkyl of 1–20 carbon atoms, an aryl of 6–20 carbon atoms, and a heteroaryl of 6–20 carbon atoms; and X is selected from the group consisting of a halogen, a hydroxyl, an amino, carboxylic acid or a salt thereof, sulfonic acid or a salt thereof, and phosphoric acid or a salt thereof.