Substituted quinones or analogues as colouring agents

A compound of the formula I

• where
• E denotes NR4 or O,
• Sp denotes a bond, alk, —C(O)— or —(CO)-alk,
• D denotes a colour chromophore,
• R1, R2 or R3 each, independently of one another, denote —H, -A, —OA-, —(CH2)p—OH, —C(O)OA, COOH or COOX,
• p denotes an integer from 1 to 4,
• X is the counterion to the [COO−] group,
• R4 denotes A,
• alk denotes a linear or branched or cyclic alkylene group having 1 to 18 C atoms and
• A denotes a linear or branched alkyl group having 1 to 20 C atoms and/or salts, tautomers, stereoisomers and/or solvates thereof, including mixtures thereof in all ratios, wherein substituent D is a substituent of the formula II, III, IV, V, VI, VII, VIII, IX, X, XI or XII,
• where
• Ra, Rj and R′j each, independently of one another, denote A,
• Rb denotes H or A,
• Rg and R′g each, independently of one another, denote H, Hal, NA2, CN, COOH, OH, CF3, OA, OC(O)A, C(O)OA, NHC(O)A, NHSO2A, SO2NA2,
• Rs denotes H, A, NA2, OA or SO3Y,
• Ri and R′i each, independently of one another, denote H or A,
• Rc and Rd each, independently of one another, denote H or A, where A may be substituted by at least one OH group,
• Re denotes an alkyl group having 1 to 6 C atoms which is substituted by at least one group NA2 or NA3Y,
• Y is an anion of an organic or inorganic acid or a cation,
• A denotes a linear or branched alkyl group having 1 to 20 C atoms,
• Hal denotes F, Cl, Br or I and
• m denotes 0, 1, 2, 3, 4 or 5.