A kind of high-performance dichroic brilliant blue reactive dye and preparation method thereof

Abstract

The invention discloses a high-performance dichroic brilliant blue reactive dye and a preparation method thereof, belonging to the technical field of reactive dyes, comprising a general formula (I), wherein X is F or Cl; M is -H or an alkali metal ; the R 1 , R 4 is ‑H or ‑CH 3 ; the R 2 , R 3 is ‑H or ‑SO 3 H, X is Cl; M is Na; In the general structural formula (I), the R 1 , R 2 , R 4 When ‑H, R 3 for‑SO 3 H; the R 1 , R 3 , R 4 for-CH 3 when R 2 for‑SO 3 H; X is Cl; M is Na. In the reactive blue dye of the present invention, the absorption wavelengths of two chromophores with different structures can be effectively superimposed, which greatly increases the synergistic color enhancement effect of the two chromophores, improves the brilliance of the dye color, and the two chromophores have no Contains heavy metal ions, which greatly improves the environmental protection of reactive blue dyes in this application, and overcomes the problems of inconsistency such as directness, exhaustion rate, reactivity, etc. in the intermolecular color matching of existing reactive blue dyes. Has high lifting power.

Description

technical field [0001] The invention relates to the technical field of reactive dyes, in particular to a high-performance dichroic brilliant blue reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes are rich in variety and bright in color, and their molecular structure contains reactive groups, which can chemically react with hydroxyl groups on cellulose fibers and amino groups on protein fibers, and combine with fibers through covalent bonds. Therefore, the fastness performance of the dyed fiber is superior. At present, most reactive dyes on the market are usually single-chromosome reactive dyes such as reactive yellow FG (C.I. reactive yellow 42), reactive orange KN-2G (C.I. reactive orange 72), reactive red 5-B (C.I. reactive red 35 ), P-6GS Bright Yellow (C.I. Reactive Yellow 95), P-3R Brilliant Blue (C.I. Reactive Blue 49), etc. [0003] In addition to single-chromosome reactive dyes, when a single dye molecular structure contains...

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Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide a kind of high-performance dichroic brilliant blue reactive dye and its preparation method. In the reactive blue dye, there are two chromophoric absorption wavelengths with different structures that can be effectively superimposed, and the two All the color bodies do not contain heavy metal ions, which greatly improves the environmental protection of reactive blue dyes in this application, and overcomes the inconsistencies of directness, exhaustion rate, reactivity, etc. in the intermolecular color matching of existing reactive blue dyes Question, reactive blue dye not only has high lifting power, but also has excellent light fastness properties

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