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Synthesis and Characterization of Naphthalenesulfonic Formaldehyde Condensates for Improving the Solubility of C.I.Reactive Blue 19 in Alkali Liquor |
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| Authors: | NAN Xu-ying YAO Yu-hua SHAO Jian-zhong |
| Affiliation: | 1. School of Li fe Science, Zhejiang Sci-Tech University, Hangzhou 310018, China 2. Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhej tang Sci-Tech University, Hangzhou 310018, China |
| Abstract: | The solubility of C.I.reactive blue 19 in aqueous alkali is poor, so it isn't used to dye celluiosic fiber in cold pad-batch dyeing.In order to improve the solubility of this dyestuff in alkali liquor, the right dispersants will be needed.A series of condensates are synthesized by changing the synthesis conditions such as the ratio of naphthalenesulfonic (N) to formaldehyde (F), acidity, and their compositions are confirmed by MS spectrum.It is found that in acidity scope of 20%- 24% and the ratio of N to F 1 : 0.33, the synthesized condensates can efficiently improve the solubility of C.I.reactive blue 19 in alkali liquor.In addition, the influences of the condensates on the exhaust dyeing and the cold pad-batch dyeing are tested. |
| Keywords: | C.I. reactive blue 19 solubility in alkali liquor condensates of naphthalenesulfonic-formaldehyde exhaust dyeing cold pad-batch dyeing |
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