共查询到19条相似文献,搜索用时 109 毫秒
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介绍了金属络合有机颜料的特点 ,包括它们的化学结构、制备方法、应用性质等。金属络合有机颜料作为有机颜料性能无机化的品种 ,既保持了有机颜料鲜艳 ,着色力强的特点 ,又有无机颜料优异的耐热、耐候性能 ,对于传统有机颜料的改性具有十分重要的意义 相似文献
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该文着重介绍了高性能有机颜料中的偶氮缩合类颜料、异吲哚啉酮和异吲哚啉类颜料合成中所必须的中间体,特别是国内尚未开发的一些中间体的合成.这些中间体的合成工艺不比CLT酸复杂,但它们的开发成功却对发展高性能有机颜料有较大的促进. 相似文献
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介绍了世界有机颜料制造工业的重组和市场对有机颜料需求增长的形势 ,指出当前有机颜料行业采取的发展措施是 :①改造生产装置和扩大生产规模 ;②大力发展合资企业 ;③深化新产品的开发和制造技术的革新 相似文献
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介绍了2005年全国染料、有机颜料生产经营和进出口概况。全国染料、有机颜料产量合计79.7万t,同比增长了7.4%。全国染料进出口总量29.59万t,同比增长了1.61%;有机颜料进出口总量14.59万t,同比增长了5.12%。根据相关数据资料及行业情况调查进行了分析对比,并对未来发展进行了预测与建议。 相似文献
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1999年全国有机颜料及进出口出现了高速增长的良好势头 ,但同时却出现了增长不增收的现象。在分析了生产和进出口情况后 ,建议控制生产总量以扭转供过于求的局面 ;在对相关行业和出口市场研究的基础上调整产品结构 ;在降低成本、提高质量的基础上 ,加快开发欧美市场和自营出口以提高出口效益。 相似文献
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从生产总量、进出口贸易及经济指标等方面介绍了2008年我国颜料行业总体生产经营状况,重点对无机颜料——钛白粉、氧化铁及铬系颜料2008年生产经营状况进行了阐述,并提出了未来行业发展建议。 相似文献
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A self-assembled monolayer (SAM) of l-homocysteine (l-Hcy) formed on the surface of a gold-deposited gate of a field effect transistor (FET) was used to differentiate between enantiomers of amino acids, for which the formation of diastereomeric metal complexes is fundamental for chiral discrimination. Here, we focus our attention on the dependence of the FET response on the analyte amino acids, the central metal ions involved in complex formation, and the solution pH. Using the l-Hcy SAM-modified gate with added Cu(II), notable negative FET responses were enantioselectively observed for the l-enantiomers of alanine (Ala), phenylalanine, and tryptophan, whereas differences in the FET responses between enantiomers were negligible for asparagine and aspartic acid. Regarding the enantioselectivity for Ala, the addition of Cu(II) was demonstrated to show higher selectivity as compared to other metal ions such as Co(II) and Ni(II). Moreover, for the addition of l-Ala and Cu(II), a particularly strong negative FET response was observed at pH 5.5. 相似文献
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Integrated research on the synthesis and functionality of macromolecular metal complexes has suggested that dendritic structures exhibiting a geometrical density gradient also impart a potential gradient within the constituent molecules. Focusing on dendritic π-conjugated macromolecules containing azomethine (imine) as a metal assembly site, the stepwise radial complexation of metal ions in a dendritic phenylazomethine structure has been identified for the first time. Using this discovery, the first macromolecules with precision control of the number and position of metal molecules have been synthesized. A series of new physicochemical discoveries have followed from this success, related to stepwise radial complexation, one-step multi-electron transfer, and potential gradients. The usefulness of these new macromolecules as a nano-material has also been demonstrated through application to (1) polymer electroluminescent devices, (2) organic solar cells with high energy conversion efficiency, and (3) the storage and release of metals in a manner similar to ferritin protein. 相似文献
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天然色素的提取及其生理功能 总被引:31,自引:0,他引:31
介绍了天然色素的提取和精制方法,讨论了溶剂萃取法、超临界CO2萃取法、微波辐射提取法、酶法、吸附解吸法、膜分离法的特点。针对天然色素不稳定的特点,介绍了天然色素的稳定化方法。综述了天然色素的生理功能,对类胡萝卜素、叶黄素类、黄酮类、花色苷类等色素的抗氧化活性、抗菌活性及保健功能进行了介绍。开发功能性的天然色素具有广阔的应用前景。 相似文献