Synthesis and Properties of Reactive Dyes Derived from Sulforhodamine B

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  • XU Yingmei
    State Key Laboratory of Fine Chemicals Dalian University
  • WU Zuwang
    State Key Laboratory of Fine Chemicals Dalian University

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  • スルホローダミンBより導かれる反応染料の合成と性質
  • スルホローダミン B ヨリ ミチビカレル ハンノウ センリョウ ノ ゴウセイ

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Abstract

A series of xanthene-type reactive dyes having dichlorotriazine or sulfoethylsulfonyl group was synthesized by chlorosulfonation and amination of Sulforhodamine B (C. I. Acid Red 52).<BR>Compared with Sulforhodamine B, absorption spectra for the solutions of the above reactive dyes showed bathochromic shifts, and bluish shades on silk fibre were observed. The exhautions and reaction ratios on silk were more than 88%and washing fastness was 4-5 grade.<BR>The structures of aminosulfo derivatives of Rhodamine were characterized by NMR and IR spectra and elemental analysis.

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