Thermally stable, anthraquinone colorants containing copolymerizable vinyl groups

Anthraquinone dye compounds having formula V:

• wherein:
• R is hydrogen or 1-3 groups selected from C1-C6-alkyl, C1-C6-alkoxy and halogen;
• R2 is hydrogen, C1-C6-alkyl, substituted C1-C6-alkyl, C3-C8-cycloalkyl or aryl;
• R3 and R4 are independently selected from C1-C6-alkyl or bromine;
• R6 is selected from
• R7 is hydrogen, substituted or unsubstituted C1-C6-alkyl, C1-C6-alkoxy, halogen, hydroxy, substituted or unsubstituted C1-C6-alkylthio, sulfamoyl or substituted sulfamoyl;
• R8 is hydrogen or C1-C6-alkyl;
• X is a covalent bond or a divalent linking group selected from —O—, —S—, —SO2—, —CO2—, —CON(Y)— and —SO2N(Y)—, wherein Y is hydrogen, C1-C6-alkyl, substituted C1-C6-alkyl, C3-C8-cycloalkyl, C3-C8-alkenyl, aryl or —L—Z—Q;
• X2 is selected from —CO2— and —SO2N(Y1), wherein Y1 is hydrogen, C1-C6-alkyl, substituted C1-C6-alkyl, C3-C8-alkenyl, C3-C8-cycloalkyl, aryl, heteroaryl or —CH2-p-C6H4—C(R8)═CH2;
• L is a divalent linking group selected from C1-C8-alkylene, C1-C6-alkylene-arylene, arylene, C1-C6-alkylene-arylene-C1-C6-alkylene, C3-C8-cycloalkylene, C1-C6-alkylene-C3-C8-cycloalkylene-C1-C6-alkylene, C1-C6-alkylene-Z1-arylene-Z1-C1-C6-alkylene or C2-C6-alkylene-[-Z1-C2-C6-alkylene-]n- wherein Z1 is selected from —O—, —S— and —SO2— and n is 1-3;
• L1 is a divalent linking group selected from C2-C6-alkylene, C1-C6-alkylene-C3-C8-cycloalkylene-C1-C6-alkylene, C1-C6-alkylene-arylene, C3-C8-cycloalkylene, or C2-C6-alkylene-[-Z1-C2-C6-alkylene-]n-, wherein Z1 is —O—, —S— or —SO2— and n is 1-3;
• Z is a divalent group selected from —O—, —S—, —NH—, —N(C1-C6-alkyl)-, —N(C3-C8 alkenyl)-, —N(C3-C8 cycloalkyl)-, —N(aryl)—, —N(SO2C1-C6-alkyl) or —N(SO2 aryl)-, provided that when Q is a photopolymerizable optionally substituted maleimide radical, Z represents a covalent bond;
• Q is an ethylenically-unsaturated, photosensitive polymerizable group;
• and
• m is 0 or 1.