C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 67/22 (2006.01) C09B 62/01 (2006.01) C09B 62/09 (2006.01) C09B 62/25 (2006.01) C09B 62/44 (2006.01) C09B 62/513 (2006.01) D06P 1/38 (2006.01)
Patent
CA 2428086
The present invention relates to the field of fiber-reactive dyes. Black dyeing mixtures of fiber-reactive dyes are known from U.S. Patents Nos 5,445,654 and 5,611,821 as well as from Korean Patent Application Publication No 94-2560. Deep black dye mixtures are known, for example, from Japanese Patent Application Publication Sho-58-160 362 which are based on a navy-blue disazo dye and an orange monoazo dye. However these dye mixtures have some deficiencies. With the present invention, deep black-dyeing dye mixtures of improved properties, for example wash fastnesses have unexpectedly been found, comprising a disazo dye conforming to the general formula (1), and ore or more disazo dyes conforming to the general formula (2).
L'invention concerne des mélanges de colorants pour teinture noire foncée qui contiennent un colorant disazo représenté par la formule générale (1), et un ou plusieurs colorants disazo supplémentaires représentés par la formule générale (2). Dans les formules, le groupe amide est en position 6, 7, ou 8 par rapport au groupe hydroxy, et M, n, W, R?1¿, R?2¿, R?3¿, R?4¿, R?5¿, R?11¿, L?1¿, L?2¿, L?3¿ sont tels que définis dans la revendication 1. L'invention concerne aussi des procédés de préparation et d'utilisation de ces colorants pour teinter une matière fibreuse contenant un groupe hydroxyle et/ou carboxamido.
Pedemonte Ronald
Russ Werner
Steckelberg Joachim
Dystar Textilfarben Gmbh & Co. Deutschland Kg
Fetherstonhaugh & Co.
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