Controlled-release Properties of Microencapsulated Disperse Dyes

Some disperse dyes were microencapsulated by means of in-situ polymerization. These microencapsulated disperse dyes was extracted respectively by ethanol under certain conditions. The controlled-release properties of disperse dyes through the shell of microcapsules were measured by spectrophotometer. According to the results, it was drawn that the type of disperse dyes, the auxiliaries contained in disperse dyes, the quantity of system controlling medium used and the core/shell ratio of microcapsules play important roles in controlling the release properties of microcapsules. The different controlled-release properties of microcapsules, which were prepared under given conditions, however, would in turn influence the performance of microcapsules in multiple-transfer printing.     

Dyeing Properties of Basofil Fiber

The structures and properties of Basofil fiber were studied using X-rays small angle diffraction analysis, differential-scanning calorimeter and scanning electron microscopy. Disperse dyes, acid dyes and reactive dyes had been tried for dyeing Basofil fiber. It was shown disperse dyes were superior to other ones. The two series of high temperature dyes and low temperature dyes were compared for their suitability for Basofil fiber, and their dyeing behaviors were determined.     

超细纤维用分散染料

从超细纤维的特点出发,分析了超细纤维在染色时出现的问题,从染料分子设计出发,介绍了可用于超细纤维染色的典型分散染料结构,并从偶氮、蒽酯以及杂环类洒料结构的特点。讨论了改进超细纤维用染料的途径。     

偶氮分散染料的量子化学探讨

本文用HMO法对十种偶氮分散染料做了量子化学计算。根据量化指标初步探讨了性能与分子结构之间的关系。为在合成新的偶氮分散染料时,提示了理论指向。     

新型防泳移剂AM—l03的性能及应用研究

本文简要地分析了影响染料泳移的因素。对所研制的新型防泳移剂AM—103的性能和应用进行了研究,并与国外几种防泳移剂进行了对比。防泳移剂AM—103对分散和还原染料等防泳移效果好,加工的织物光洁,颜色透芯度好,可显著减少色差,对大多数分散和还原染料染色织物的K/S值明显增大,在连续染色过程中未出现粘滚筒现象。     

吡啶类暂溶性分散染料热反应及应用研究

本文研究了新型暂溶性分散染料——吡啶(钅翁)阳离子染料的应用性能。利用TG—DTA讨论了吡啶热反应并研究了吡啶正离子对相邻碳原子化学位移的影响。实验表明,这类染料可用于聚酯纤维的染色。     

Study on Dyeing of a Novel,Pro-environment Polylactic Acid （PLA） Fiber Yarn

Seventeen disperse dyes including anthraquinone, azo, methine, nitro, and quinoline dyes were applied to dye the Polylactic Acid （PLA） yarns at different conditions, and the dyebath exhaustion was determined. The result shows that C.I. disperse red 167, C.I. disperse orange 30, and C.I. disperse blue 284 have dye-uptakes greater than 80%. Therefore, they can be used as the three principal dyes for PLA yams. The experiment discovered that the dyes, because of their Monoazo and ester group contents, have a higher dye-uptake for the PLA fiber. The research on the optimization of dyeing techniques suggests that PLA yarn can obtain a high level of dyeing effectiveness at the following conditions： pH 4- 5, dyeing temperture 110℃ for 30- 40 min. Color fastness to perspiration, and waterwashing fastness increased 1 - 1.5 by the addition of the abstergent FB during the reduction clearing.     

AN EXAMINATION OF THE INFLUENCE OF STABILIZERS ON THE PHOTOCHEMICAL STABILITY OF DISPERSE DYES

There is a powerful market-need for superfast disperse dyes in special use, e.g. for automotivefabrics. The photochemical fading reactions of dyes are often very complicated, and no singlphotodegradation pathway can be involved for all kinds of dyes. To enhance the photostability of the commonly used disperse dyes, a series of tests on the ef-fect of variable stabilizers on the photodegradation rate of nine representative disperse dyes werecarried out both in ethyl acetate solution and on cellulose acetate film. A moderate light sourceemitting above 300 nm was adopted in this study to simulate the photofading under practical appli-cations. The results show that, in solution, 2,2,6,6-tetramethyl-piperidine is the most effectivegeneral stabilizer for all the tested dyes, but on cellulose film, nickel diethyl-dithiocarbamateshows the greatest general protecting effect, and a synergistic effect is observed for special combina-tions of stabilizers.     

分散染料的生物降解性能

采用了[BOD5]／[CODcr]和呼吸速率曲线两种方法对6大类14种分散染料的好氧生物降解性能进行测试。实验表明，分散染料在好氧状态下大都难降解。然后又考察了这些染料的厌氧生物降解性能，发现这些染料经厌氧反应后大都变得可生化降解，并且染料结构与其降解性能之间有一定的关系。     

Preparation and Application of Microencapsulated Disperse Dyes

Microcapsules containing disperse dyes were prepared by means of in-situ polymerization. Polyester fabrics were multiple-transfer printed and color-mix printed using those microencapsulated dyes under different process conditions. By color measurement instrument, it can be seen that the times of multiple-transfer printing are up to ten while under appropriate conditions, especially when the transfer printing time is 50 seconds and the transfer printing temperature is 180° C. On the other hand, the K/S value of each transfer printing can keep almost constant. Meanwhile, the visual effect of color-mix printing with microencapsulated disperse dyes is special in the varicolored exhibiting if compared with conventional disperse dyes.     

分散染料微胶囊/活性染料涤棉一浴法染色工艺初探

采用原位聚合法对分散染料进行双层造壁，制得分散染料微胶囊并应用于分散染料微胶囊／活性染料涤棉一浴法染色．通过改变染色条件中的浴比、染色温度、保温时间，研究分散染料微胶囊／活性染料涤棉织物的一浴法染色新工艺，并得出最佳染色工艺条件．     

分散染料在染色涤纶上固着状态的探讨

利用X-射线衍射、DSC热分析和光学行为的测量,对三个分散染料(C.I.分散红225、167,C.I.分散蓝73)在染色涤纶纤维上的固着状态进行了研究。结果表明:这些染料均不以晶体状态固着在纤维上,所以染色纤维的色光与这些染料晶型的颜色没有关系。     

吡啶类暂溶性分散染料的合成研究

本文报导了一类新型暂溶性分散染料——吡啶阳离子染料的合成,采用IR、NMR,MS描述了这类染料的分子结构特征。实验表明,吡啶阳离子化反应在DMF中反应收率高,易于分离,为这类染料的工业化提供了可能。     

苯并氧杂蒽-3,4-二酸酐型分散染料的应用及其电子光谱计算

研究了文题染料在涤纶纤维上的染色性能。结果表明:染样色彩鲜、耐升华和耐晒牢度都较好。还研究了其最大吸收波长和最大荧光波长之间的关系,并用P.P.P.-CI分子轨道法对此类染料的最大吸收波长、最大荧光波长进行了计算。计算值和实验值有较好的一致性。     

分散染料增深剂SDT的应用研究

就分散染料增深剂ＳＤＴ在涤纶染色中的应用进行了初步研究，从而选择出增深剂ＳＤＴ的最佳用量并指出对不同结构的分散染料的增深效果。     

Adsorption Mechanism of Disperse Dye on Elastic Polyurethane Fibre

In this paper, the adsorption isotherms of two disperse dyes, C.I. Disperse Red 60 and C.I. Disperse orange 76, on two kinds of PU fibers at 90℃ were measured respectively. It was found that these adsorption isotherms followed a dual model, Nernst and Langmuir. Based on the parameters obtained in studying, the relationship between the chemical structure of dyes and their adsorption behaviors was arialyzed. Through the measurement of washing fastness of dyed sample with two dye concentrations, 1% （o.w. f） and 3% （o. w. f）, it was found that the pale shade dyeing possessed better wet-fastness than the dark. This phenomenon confirmed further that the disperse dyes were sorbed on the PU fiber by langmuir sorption and the partition mechanism.     

Recipes Prediction by Matching to K/S Values Based on New Two-constant Theory

A concept of new two-constant of colorant, both （ R/St ） and （s/St）, is introduced based on the Kubelka-Munk theory. A new two-constant theory for color matching is presented. Basic equations used in matching to K/S values are given in matrix form based on the new two-constant theory. Algorithm for a least-squares match to K/S values of a sample is developed by use of the new two-constant theory. The algorithm is suitable for single-constant theory as well as two-constant theory. The experimental data show that calculating K/S values of disperse dyes based on new two- constant theory are accordant with the measuring ones. The recipes predicted by new two-constant theory arc closer to the actual recipes of the standard sample than the recipes predicted by single-constant theory. The sample according to the recipe predicted by new two-constant theory has smaller color difference against for the standard than the sample according to the recipe predicted by single-constant theory. The results show that the scattering of disperse dyes cannot be negligible, and that the recipes match to textiles colored by disperse dyes should be predicted by using of new two-constant theory.     

四氢喹啉型杂环分散染料的研究──四氢喹啉N-烷基化和染料氰化的相转移催化

采用相转移催化对２，２，４－三甲基－１，２，３，４－四氢喹啉进行了Ｎ－乙基化 的研究，此方法得到９５％产率的Ｎ－乙基－２，２，４－三甲基－１，２，３，４－四氢喹啉。 用该化合物的衍生物合成了含嗅的偶氮分散染料，并将此染料进行相转移催 化氰化；所得的两个含氰基蓝色杂环分散染料，它们的摩尔吸收系数高达 ８０ ０００～９０ ０００ ｍ２／ｍｏｌ。     

臭氧脱色染浴中助剂的循环利用初探

通过分散染料和弱酸性染料的循环染色实验，筛选了几种在对染液通入臭氧后在氧化脱色条件下稳定的染色助剂，目的是为了减少臭氧脱色后的染液循环染色中助剂的用量，还研究了染浴臭氧脱色的工艺条件。     

New Technology of Disperse Dyes Solubilized by Auxiliaries Dyeing to Wool

The new technology of disperse dyes solubilized by auxil-iary dycing to wool is put forward creatively.On the ef-fect of agent HM made by ourselves,the wool can bedyed by disperse dyes.The effects of temperature,pHvalue,liquor ratio,electrolyte and concentration ofHM,on the percentage of exhaustion,dyeing rate andpermeability,levelness are researched.This technologyhas many advantages,e.g.superior levelness and wet-fastness,saving dyes,simple process and bright shadeetc.,this project has utmost values of theory researchand practice application.