Reactive colorants, mixtures of reactive colorants and production and use thereof

A dye mixture comprising at least one dye of formula

• wherein
• R1 and R2 are each independently of the other hydrogen or C1-C4alkyl, and
• D1 and D2 are each independently of the other a radical of formula (2)
• wherein
• (R3)0-3 denotes from 0 to 3 identical or different substituents selected from the group consisting of halogen, C1-C4alkyl, C1-C4alkoxy, carboxy, nitro and sulfo, and
• X1 is a radical of formula (3a), (3b), (3c), (3d), (3e) or (3f)
• —SO2—Z (3a),
• —NH—CO—(CH2)m—SO2—Z (3b),
• —CONH—(CH2)n—SO2—Z (3c),
• —NH—CO—CH(Hal)-CH2-Hal (3d),
• —NH—CO—C(Hal)=CH2 (3e) or
• wherein
• Y is halogen, T independently thereof has a meaning given for Y or is a non-fibre-reactive substituent or is a fibre-reactive radical of formula (4a), (4b), (4c), (4d) or (4e)
• —NH—(CH2)2-3—SO2—Z (4a),
• —NH—(CH2)2-3—O—(CH2)2-3—SO2—Z (4b),
• wherein
• Z is vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions,
• Z′ is a group —CH(Hal)-CH2-Hal or —C(Hal)=CH2,
• m and n are each independently of the other the number 2, 3 or 4, and
• Hal is halogen,
• together with at least one dye of formula (8)
• wherein
• r and s are each independently of the other the number 0 or 1, and
• X2 and X3 are each independently of the other a radical of formula (3a), (3b), (3c) or (3d) as given above.