共查询到16条相似文献,搜索用时 140 毫秒
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研究了C.I.分散蓝257的合成工艺,并重点对其中间体的合成做了一些研究。对合成2-氯乙基甲基醚用的催化剂以及不同温度对产品质量的影响做了分析。 相似文献
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介绍了通过过氧化氢制备中间体2,6-二氯-4-硝基苯胺的最佳方法,得到的产品质量好、污染小、纯度为97%、熔点为190~191℃。并将制备出的中间体2,6-二氯-4-硝基苯胺用于C.I.分散橙76的合成,制得的成品成色好、分散度好、符合染料要求。 相似文献
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以1,8-萘二甲酸酐和2-硝基-4-甲氧基苯胺为原料,用水作为溶剂合成了C.I.分散黄71.其总收率可达到88%,高效液相色谱含量可达到99%.得到的产品经应用测试达到国内外同行水平. 相似文献
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介绍了以2-氨基-3,5-二硝基噻吩和N,N-二乙酰氧乙基苯胺为原料,经重氮化反应和偶合反应合成分散蓝284的方法。产物收率95%。 相似文献
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研究了以1-氨基-4-羟基-2-苯氧基蒽醌和己二醇为原料,在聚乙二醇溶剂中合成1-氨基-4-羟基-2-(6-羟基己氧基)蒽醌(C.I.分散红91)的工艺,获得较优合成工艺参数,产品总收率达85%,比文献值提高近10%。对合成的产品进行了结构表征与应用测试。 相似文献
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以对硝基苯胺和间(苯甲酰氨基-N,N-二乙酰氧乙基)苯胺为主要原料合成分散红135,并对其各项性能与进口同类产品进行了综合对比分析。结果表明,该产品各项指标均达到了进口产品的质量要求,完全可替代进口产品。 相似文献
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The solubility of disperse dyes and their mixture in supercritical carbon dioxide is an important property in study and development of supercritical fluid dyeing technology. In this study, solubilities of C.I. Disperse Red 73, C.I. Disperse Blue 183 and their mixture in supercritical CO2 are measured at temperatures from 343.2 to 383.2 K and pressures from 12 to 28 MPa with a static recirculation method. Under the experimental conditions for the binary (C.I. Disperse Red 73 + CO2 or C.I. Disperse Blue 183 + CO2) and ternary (C.I. Disperse Red 73 + C.I. Disperse Blue 183 + CO2) systems, the solubilities increase with pressure. The solubility of C.I. Disperse Blue 183 decreases with the increase of temperature when the pressure is lower than 16 MPa, and the trend is opposite when the pressure is higher than 16 MPa. However, there is no crossover pressure for C.I. Disperse Red 73. The solubilities are also affected by molecular polarity of dyes. The co-solvent effect exhibited in the dissolving process of mixed dyes promotes their disso-lution in supercritical CO2. The experimental data of solubilities of C.I. Disperse Red 73, C.I. Disperse Blue 183, and their mixture are correlated with the Chrastil model and Mendez-Santiago/Teja model. The former is more accurate. 相似文献
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Ji-Eun Lee Hyun Jee Kim Mi Ran Han Su Yeon Lee Won Joo Jo Shim Sung Lee Jeong Sook Lee 《Dyes and Pigments》2009,80(1):181-186
Single crystals of C.I. Disperse Red 65 and C.I. Disperse Red 73 were grown from ethyl acetate and acetonitrile/toluene solutions, respectively, and their crystal structures were determined using single-crystal X-ray diffraction analysis. In each dye molecule, the aminoazobenzene framework is almost planar due to intramolecular H-bonding. In the case of C.I. Disperse Red 65, intermolecular associations occur by π–π stacking and intermolecular H-bonding, resulting in a herringbone-type arrangement; for C.I. Disperse Red 73, toluene molecules stabilize the crystal structure via π–π stacking. 相似文献