C.I.颜料绿7重结晶颜料化工艺

对C.I.颜料绿7进行了溶剂法重结晶颜料化工艺研究,并考察了溶剂、温度及时间等条件对重结晶颜料粗品的影响.最佳工艺条件为:邻乙基苯甲酸作溶剂、溶剂与颜料比1∶1、反应温度100℃,时间7h,再经水解、过滤、洗涤、干燥处理.结果显示,该工艺得到的颜料与现有工艺GF311商品相比,水性应用着色力为111.04％,饱和度为+...     

C.I.颜料绿7苯甲酸颜料化工艺研究

用苯甲酸及其烷基衍生物对酞菁绿粗品进行颜料化,制备不含添加剂的C.I.颜料绿7颜料.考察了苯甲酸及其烷基衍生物不同组分处理效果,并进行优化.结果 表明,在温度100～105℃、苯甲酸/颜料质量比0.8、时间6h的最优化工艺条件下,C.I.颜料绿7商品收率约99％,苯甲酸回收率达95％,与现有工艺GF311商品相比,在水...     

C.I.颜料红179的化学法颜料化

研究了一种C.I.颜料红179的化学反应颜料化方法。在含C.I.颜料红179粗品的水相中,加入氨基苯磺酸、苯酚或苯胺衍生物和表面活性剂,发生重氮化-偶合反应,在原位生成偶氮化合物。这种包括化学反应过程的颜料化加工方法,在改善C.I.颜料红179的分散性和颜料着色力的同时,又提高了颜料的产率。     

C.I.颜料红177颜料化的初步研究

本文论述了Ｃ．Ｉ．颜料红１７７的颜料化方法及其基本过程并采用添加表面处理剂对该颜料进行颜料化处理。此外,本文还以海泡石为核,对该颜料进行包核颜料初步研究,结果表明,该颜料在水中具有较好的分散性。     

C.I.颜料红48:2的改性

在C I 颜料红48∶2的合成过程中,用不同类型的表面活性剂对其实施表面处理,研究了表面活性剂结构对C I 颜料红48∶2性能的影响。结果表明,添加阴离子表面活性剂、松香及其衍生物以及松香与阴离子表面活性剂、高分子分散剂的复配可以明显改善C I 颜料红48∶2的色光、透明度、流动性、着色力及分散性等多项应用性能。     

预分散C. I. 颜料黄14的制备研究

以3,3'-二氯联苯胺盐酸盐(DCB)和邻甲基乙酰乙酰苯胺(AAOT)为原料,在偶合反应结束后,向制备的C.I.颜料黄14(PY14)水分散液中添加聚乙烯蜡(PEW),考察了PEW添加量、加热温度、加热时间、搅拌转速、pH、PEW粒径对颜料性能的影响。得到较优制备条件为PY14与PEW质量比1.0∶1.0、加热温度80℃、加热时间20 min、40～60目PEW、pH=7.0、转速250 r/min,在该条件下制备出直径为1～2 mm、粒径均一、具有核壳结构和疏水性能的预分散C.I.颜料黄14(预分散颜料PY14)。预分散颜料易于从水相分离,滤饼含水量从PY14颜料的79.29%降低至预分散颜料PY14的59.85%,过滤时间为PY14颜料的1/20;分散过滤值(FPV)从PY14颜料的0.75 MPa/g降低至预分散颜料PY14的0.06 MPa/g;所得颜料不需经过强力粉碎,可抑制粉尘污染的产生;在保持与原颜料相近的色光、饱和度、鲜艳度等颜料性能前提下,提升了颜料的着色力。     

C.I.颜料红146的合成和改性

讨论了主要合成条件和表面活性剂对C.I.颜料红146性能的影响。结果表明:合成C.I.颜料红146的较好工艺条件为:顺式偶合,偶合时间1小时,偶合结束pH为5.0,升温至90℃,保温30分钟,产品在80℃下干燥。添加表面活性剂后可得到色光偏蓝,着色力较高,分散性较好的C.I.颜料红146产品。     

丙烯酸树脂包覆改性 C. I.颜料黄 14的制备研究

为提高 C. I.颜料黄 14在水性体系中的应用性能，对反应得到的 C. I.颜料黄 14在后续的热处理过程中采用丙烯酸树脂包覆，获得的产物用红外光谱和 XRD进行了表征。考察了丙烯酸树脂的添加量对产物的着色性能和光泽的影响，并对产物耐乙醇性和分散稳定性进行了测试。结果表明：本文制得的树脂包覆改性 C. I.颜料黄 14的着色力和光泽均较普通 C. I.颜料黄 14的高，颜料着色力可达 125%，耐乙醇性及分散稳定性显著提高，耐乙醇性可达 4. 5级，放置 24 h后稳定性动力学指数仅为 0. 76。     

噻嗪颜料

该文简要介绍了噻嗪颜料及其发色体,它们的合成方法、晶体结构,以及它们的应用性能与色谱性能,并与DPP颜料做了比较,给出了两者的异同.讨论了其用于新颜料开发的可能性.     

松香及其衍生物对颜料红48：2的改性

该文阐述了在C.I.颜料红482合成的过程过中,用松香及其衍生物对其实施表面处理,并研究了松香及其衍生物的添加量对C.I.颜料红482性能的影响.结果表明,添加松香及其衍生物可以明显改善C.I.颜料红482的色光、透明度、流动性及着色力、分散性等多项应用性能.     

Polymorph prediction of organic pigments

The crystal structure of several industrially important organic pigments namely C.I. Pigment Violet 23, C.I. Pigment Red 202 and C.I. Pigment Yellow 139 were predicted using the Cerius² Polymorph Predictor in combination with XRPD patterns. After generation and energy minimisation of the candidate structures for each pigment, their calculated powder patterns were compared with those obtained experimentally using X-ray diffraction. The structures which best fitted the experimental powder patterns were regarded as possible structures of the compound; finally, a rigid body Rietveld refinement was performed to validate the choice of the structure. The structure of C.I. Pigment Violet 23 has not previously been published while the predicted structures of C.I. Pigment Red 202 and C.I. Pigment Yellow 139 were in accordance with the published structures. The work demonstrates that pigment crystal structure can be predicted using a low quality X-ray powder diffraction pattern.     

有机颜料的新品种与新技术

有机颜料的发展主流是大力研发高性能有机颜料，它们中已上市的新品种有以C．I．颜料蓝80为代表的苯并咪唑酮-二噁嗪类颜料，以C.I．颜料红279为代表的苯并噻嗪-靛蓝类颜料，以C.I.颜料黄213为代表的喹噁啉二酮类颜料和以C.I.颜料黄214为代表的双苯并咪唑酮偶氮颜料。制备复合型颜料、混晶型颜料和暂溶性颜料则是近年来出现的对颜料进行合成与加工的新技术。有8篇参考文献。     

一些高性能有机颜料生产工艺的改进

国内部分高性能有机颜料的生产工艺主要是借鉴国外早期的生产技术,这些技术已经不适应当今时代对环境保护的要求.为了更加清洁化地生产此类有机颜料,文章给出了三个高性能有机颜料（C.I.颜料紫23, C.I.颜料橙64, C.I.颜料红264）生产工艺改进的思路和实践.     

Investigation of the Effects of Rosination in the Preparation of Lithol Red R (C.I. Pigment Red 49)

It has been found that alkali metal salts of wood rosin are amphiphilic and in certain concentrations in water exhibit mesophase behaviour. The influence of sodium and barium rosinates below and above their CMC values on the morphology and crystal structure of Lithol Red R (C.I. Pigment Red 49) has been studied by Scanning Electron Microscopy (SEM) and X-ray diffraction methods. The results indicate that the morphological changes which occur on rosination are probably due to the incorporation of the pigment in the micellar structure and also a consequence of molecular adsorption of rosin on the pigment particles.     

The Polymorphism of C.I. Pigment Red 1

The polymorphism of C.I. Pigment Red 1 (1-[(4′-nitrophenyl)-azo] -2-naphthol) in commercial samples has been investigated by interpreting their X-ray diffraction patterns. These have been compared with each other and with those from three single-crystal polymorphs (α, β and γ). It is concluded that commercial samples are predominantly of either one or two phases (α or γ). There is evidence that a fourth phase (δ) exists in powder form.     

电解法处理C.I. Reactive Red 241、C.I. Disperse Blue 56模拟染料废水的研究

以C.I.Reactive Red 241、C.I.Disperse Blue 56模拟染料废水为对象,研究了电解法处理该类染料废水的优化条件。考察了起始电压、电解时间、溶液初始p H对处理效果的影响。结果表明,在p H=7,U=14V、I=3.2A、t=30min的条件下,C.I.Reactive Red241模拟染料废水的脱色率可达到86%以上;在p H=7,U=14V、I=3.2A、t=25min的条件下,C.I.Disperse Blue 56模拟染料废水的脱色率可达到79以上%。     

乌饭树果红色素的研究——Ⅳ乌饭树果红色素的性能研究

研究了乌饭树果红色素的理化性能,进行了乌饭树果红色素的毒性试验和应用试验,为该色素的制备、贮藏和应用提供了科学依据。     

Colour Differences in Azo Pigments

Four azo pigments - C.I. Pigment Red 1 and 6, Yellow 1 and Orange 6 - have been prepared using a continuous coupling process under a range of conditions of pH, coupling temperature, concentration and rate of flow. The colour and size distribution of the pigments have been measured, the latter using a modified optical centrifuge for which new conversion factors have been determined. Continuous methods generally give lower particle sizes than comparable batch methods. This is discussed in terms of theories of nucleation and growth, as is the potential industrial application of continuous coupling.     

Phenomenon of color change in colored poly(vinyl chloride) compound

This paper addresses a phenomenon of color shift found during the development of a colored poly(vinyl chloride) (PVC) compound for exterior automotive application containing, among other pigments, red anthraquinone (C.I. Pigment Red 177) and titanium dioxide (TiO₂). Color was found to shift about 2 points delta b* on a CIELAB scale from yellow to blue during the first one month and a half since the compound had been processed. The shift took place at the regular conditions: room temperature with no exposure to sunlight or heat.     

Pigment Yellow G583-a misclassified pigment and its relationship with other acetoacetanilide azo pigments

Pigment Yellow G583 (nominally C.I. Pigment Yellow 6) has been compared with another version of C.I. Pigment Yellow 6 (Recolite Fast Yellow 3G) and the colour and the X-ray powder diffraction pattern have been found to be different. Density measurements, crystal structure analysis and chemical analysis have shown that the former is a mixed crystal of60 mol% C.I. Pigment Yellow 6 and 40 mol% C.I. Pigment Yellow 5. Pigment Yellow G583 was then compared crystallographically with a series of similar pigments, and it has been concluded that the structure of C.I. Pigment Yellow 6 is different to that of all the others. Regardless of composition, Pigment Yellow G583 is a mixed crystal of C.I. Pigment Yellow6 molecules in an α-C.I. Pigment Yellow 5 lattice and not vice versa. This does not necessarily make Pigment Yellow G583 a poor pigment, but a change of composition may cause the crystal lattice to become that of C.I. Pigment Yellow 6, changing the physical properties. The only way in which a change of crystal structure can be detected is to examine the X-ray diffraction pattern.