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The Market Application Of SD-Type Cationic Dyes

Jun 19, 2017

1. According to the nature of the fiber selection of various fibers due to their different nature, in the dyeing when you need to use the appropriate dye. For example, cotton fiber dyeing, because of its molecular structure contains many hydrophilic hydroxyl, easy to absorb moisture puffing, with the reactive groups from the chemical reaction, and more alkali, it can choose direct, reduction, curing, ice dye And active dyes. Polyester hydrophobic strong, high temperature alkali, under normal circumstances should not use the above dyes, but should choose to disperse dyes for dyeing.SD-Type Cationic Dyes2. According to the dye used to select the dye due to the use of different dyeing, so the fastness of the finished product requirements are also different. For example, the cloth used as curtains is not often washed, but often subject to sunlight, so when dyeing, should choose light fastness of the dye. As the underwear and summer wear light-colored fabric dyeing, due to regular washing, the sun, so should choose washing, light fastness, high fastness to dye dyes.SD-Type Cationic Dyes3. According to the cost of dye selection of dyes in the choice of dyes, not only from the light and fastness of the sake, while taking into account the cost of dyes and additives used, supply and so on. Such as the higher price of the dye, should be considered with the same effect can be dyed with other dyes to replace, to reduce production costs.4. When the color of the choice of dyes in the need to fight color, the choice of dyes should pay attention to their composition, solubility, color fastness, dyeing rate and other properties. As the dyeing performance of various types of dyes are different, in the dyeing often due to temperature, solubility, dyeing rate, etc. affect the dyeing effect. Therefore, when you fight color, you must choose the performance of similar dyes, and the more similar the better, which can be conducive to the control of process conditions, dyeing quality stability.SD-Type Cationic Dyes5 According to the dyeing performance of mechanical selection Dye due to different dyeing machinery, the nature and requirements of the dye is not the same. If used for dyeing, should use the higher directness of the dye; for pad dyeing, you should choose a relatively low direct dye, otherwise it will produce deep before and after the shallow, uneven color and other products do not meet the requirements.SD-Type Cationic Dyes