STUDIES ON THE DECOMPOSITION OF AMINOANTHRAQUINONE DISPERSE DYES BY IRRADIATION OF LIGHT

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  • Tanaka Yoshishige
    Department of Applied Chemistry, Faculty of Technology, Gunma University
  • Oki Yasumasa
    Department of Applied Chemistry, Faculty of Technology, Gunma University
  • Ishii Yoshiji
    Department of Applied Chemistry, Faculty of Technology, Gunma University

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Other Title
  • アミノアントラキノン系分散染料の光分解
  • アミノアントラキノンケイ ブンサン センリョウ ノ ヒカリ ブンカイ

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Abstract

In the previous paper it was shown that aminoanthraquinones gave corresponding anthrahydro-quinone by exposure to the light in ethyl alcohol.<br>The present paper deals with the effects of several compounds on the rate of the fading reaction of 1, 4-bisoctylaminoanthraquinone. The compounds in with similar chemical constitution to textile materials were sellected, such as ethyl acetate (I), 1, 3-propanediol (II), propylene trimer (III) and n-hexane (IV).<br>Spectral changes of the dye due to light exposure in ethyl alcohol, adding to which one of the compounds, were measured in the visible region.<br>Following results were obtained:<br>a) In irradiation of the dye solution, new band of the spectrum having maximum at 500_??_460mμ revealed as shown in earlier report. The rats of fading reaction was remakably accelerated by the addition of the compounds I and II.<br>b) In addition of the compound III no spectral change was observed except the reduction of optical densities, and the rate of the reaction was not modified.<br>c) In addition of the compound IV the rate of fading reaction decreased. Also, developement of the new band by light sxposure in n-hexane was obserbed at 600_??_560mμ.<br>This intermediate product was identical in the spectra with 1, 4-diaminoanthraquinone and its melting point was not depressed by mixing with synthesized 1, 4-diaminoanthraquinone.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 24 (7), 343-348, 1968

    The Society of Fiber Science and Technology, Japan

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