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Development And Application Of Cationic Dyes

Jul 02, 2017

    cationic dyes are developed with the development of petrochemical industry, the 1950s with the appearance of acrylonitrile fiber, Swiss Geigy company and Germany's Bayer company have developed a cationic dye for acrylonitrile fiber. In the early 60, China also developed and produced the first generation of various cationic dyes. The second generation of X-type cationic dye was developed in the 70 's, which enlarged the spectrum range, improved the dyeing performance and considered the compatibility of ternary color. The third generation M-type cationic dye was produced in the 70 's, which is called the migrating cationic dye, which can be applied to all kinds of acrylonitrile fiber dyeing.Cationic Dyes
    The world produces dyes in the developed countries, the production of cationic dyes and alkaline dyes in the total production of only 10% of the total amount of dye. In the last century 90, China's cationic dye production has more than 2000 tons/year, only accounted for more than 1% of total dye, but also part of the export. cationic dyes with the X-type three primary colors and cationic pink FG and red 5GN for the production of large varieties. In recent years, the research and development of good dyeing performance, specificity, new structure varieties, as well as old product process improvement, energy saving, wastes governance and other fields.Cationic Dyes
    In people's lives, often hear the name of cationic dyes, but do not know what is the cationic dye, and do not know how to define cationic dyes. Many people know that it is a kind of dye, often used in the dyeing of some textile, and now some paper and other cultural and educational supplies dyeing is the use of cationic dyes. Today we will briefly introduce the definition of cationic dyes. The general definition is to see the dye in the Chromophores group in the group, if the group containing alkaline is indicated to be cationic dye, conversely, it is acidic stain. We know that there must be some conditions for becoming a dye, the most important of which is its color and its ability to dye other substances. The dyeing ability of other materials is not related to Chromophores group. The so-called Chromophores Regiment is in the molecular structure of dyes that some molecules only absorb a certain color of the wavelength, thus giving a person this matter will emit a certain color of light. The determination of cationic dyes must also consider the combination of the Chromophores group and the Chromophores group.Cationic Dyes