脱アミノ6-ナイロンによる酸性染料の単独ならびに混合染色

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タイトル別名
  • SINGLE AND MIXTURE DYEING OF ACID DYES BY DEAMINATED 6-NYLON
  • ダツアミノ 6-ナイロン ニ ヨル サンセイ センリョウ ノ タンドク ナラビニ コンゴウ センショク

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説明

In the previous paper1), the dyeing with a mixture of mono-, di- and tribasic dye acids of unmodified 6-nylon were reported. <br>In the present paper, the single and mixture dyeings with the dye acids of the deaminated 6-nylons (samples: 6-nylon I, II, III), having less amino end groups than regular one is studied. The dye acids used are C. I. Acid Orange 7, Blue 25 (monobasic), C. I. Food Yellow 3, C. I. Acid Blue 45 (dibasic) and C. I. Acid Red 18 (tribasic). The adsorption isotherms of the dye acids in single and mixture dyeings for the samples (see Table 1) were determined at 90°C.<br>The results obtained are as follows:<br>1) Assuming that the adsorption of these dye acids on the samples is of L + C type (Figures 1, 2, 3), the constants [S], a and k in the equation (1) were calculated from the experimental data (see Table 2).<br>2) In the single dyeing, the saturation values [S] of di- and tri- basic dye acids were larger (1_??_3 times of equivalent) than the number of amino end group of the samples. It is thought that, when one of the sulphonic groups in a di- or tribasic dye molecule is linked with an amino end group in the sample, for the other sulphonic group in the same dye molecule, it is difficult to link with other amino end group in the sample on account of the average distance between the amino end groups in the samples is lager than the distance between the sulphonic groups in a di- or tribasic dye molecule.<br>3) In the binary mixture dyeing with the dye acids of the samples having small contents of amino end group, it is found that blocking effect is estimated by comparison of not only the constants a, k but also [S] of each dye acid in single dyeing respectibely, differed from the case of the mixture dyeing for regular 6-nylon1).

収録刊行物

  • 繊維学会誌

    繊維学会誌 26 (9), 432-437, 1970

    社団法人 繊維学会

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