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Application Characteristics Of Cationic Dyes

Sep 06, 2017

     Dyes used in leather dyeing, the main chemical components of other leather used are protein, that is, polypeptide. The dyes used in leather dyeing are mainly acidic dyes (including metal complexing dyes), alkaline dyes, direct dyes and oxidation dyes. Because of the high affinity between alkaline dyes and the rubber in leather, it is easy to be fixed on the surface of the leather, so it can dye the thicker color.Cationic Dyes
     Early alkaline dyes for leather dyeing are like dyes (30), (' 0), etc. Alkaline dyes are also widely used in other nonwoven fibers, such as functional dyes and applications in biology and medicine. Functional dyes are used in the modern High-tech field by using the special function of dyes or their special specificity. such as Dye (36) is the nitrogen miscellaneous sticks of alkaline dyes, is the light action of redox reaction, will occur color changes, can be used for photochromic dyes. As shown in the following: a mouthful. Meng C 11 llwees. J work ... ' CH3 ' n ' CH3 ' "V nhczhs (60) Dye (61)" is a black alkaline dye developed in recent years for leather and also for paper dyeing.Cationic Dyes
     Public: Jiu (CH3) zn~n (CH3): (colorless) (CH3) ZN "prison N (CH3) 2 (blue)" CH3, 3 points CH3 gan n turn, qi less n state dye (25) of the internal vinegar compound, by the role of heat or pressure, chemical structure changes, resulting in color changes, is currently a large number of applications of heat, pressure-sensitive dyes. as follows: (CH,) 2,150 "' CH3" N (CHs): (colorless) $number yang cationic dyes and alkaline dyes Volume 18th (CHs): N/16 Rustic, ~ Yin Pian n Strokes (CH3) 2 N (CHs) 2 (purple) (2) Application of dyes in biology and medicine the use of alkaline dyes in biology can selectively dye different types of bacteria, and 100 years ago, Danish microbial biologist Gram proposed a taxonomy of gram bacteria. Is the use of dyes on different ion types of bacteria dyeing performance is different. Dye (24) is an excellent selective dye for bacterial staining, which plays an important role in the study of bacteria.Cationic Dyes
     The selective staining of dyes (27) and dyes (62) can identify DNA and RNA (ribonucleic acid) in the protein body. V (CH3) znz "Marunouchi (CH3) 2 color 214 species, purple 50 species, blue 164 species, green 14, brown 23 species and Black Z one. From 1952-1992 to 10 years, a total of 50 new varieties of dyes were added. The world of dye-producing developed countries, their cationic dyes and Cationic Dyes