Basic Dyes


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Basic Dyes

 

organic dyes that have the properties of bases and contain the amino group NRʹRʺ (Rʹ and Rʺ denote hydrogen or a low-molecular-weight alkyl). In terms of chemical structure, basic dyes are mainly aryl-methane, quinonimine, and azo dyes.

Basic dyes are brilliant dyes of all colors, but they are not fast and therefore are virtually not used for dyeing cotton textiles. They are widely used in dyeing paper, leather, and wood, as well as in the preparation of printing inks. The salts of basic dyes and phosphotungstomolybdic acid (fanal varnishes) are widely used in the printing industry.

Basic dyes are more colorfast in polyacrylonitrile fibers; special basic dyes used for this purpose, called cation dyes, are brilliant and highly fast.

REFERENCE

Chekalin, M. A., B. V. Passet, and B. A. Ioffe. Tekhnologiia organiches-kikh krasitelei i promezhutochnykh produktov. Leningrad, 1972.

M. A. CHEKALIN

References in periodicals archive ?
Ahmad, Equilibrium Modeling and Kinetic Studies on the Adsorption of Basic Dye by a Low-Cost Adsorbent: Coconut (Cocos Nucifera) Bunch Waste, J.
Basic dyes removal from wastewater by adsorption on rice husk carbon, Indian Journal of Chemical Technology, 8: 133-139.
reported the adsorption of basic dyes by activated carbon fiber and modified alginate [19].
Characteristics and environmental application of an Australian natural zeolite for basic dye removal from aqueous solution.
As such, numerous alternative materials have been investigated to adsorb dyes from aqueous solution, using methylene blue as the model basic dye, such as guava leaf powder (Ponnusami et al.
Key product segments and sub-segments analyzed include-Inorganic Pigments (Titanium Dioxide, Iron Oxides and Others), Organic Pigments, and Dyes (Acid Dyes, Basic Dyes, Direct Dyes, Disperse Dyes, Fiber Reactive Dyes, Vat Dyes, Fluorescent Brighteners and Others).
Cukierman, 2010, "Effectiveness of cupressus sempervirens cones as biosorbent for the removal of basic dyes from aqueous solutions in batch and dynamic modes", Bioresource Technology 101, 9500-9507.
These findings indicate that PPP and CPLP could be employed as effective and inexpensive adsorbents for the removal of basic dyes especially MB.
The ratings reflect SCL's long track record in the business of dyestuffs, well-diversified product portfolio comprising acid dyes, basic dyes, direct dyes and reactive dyes, presence in liquid dyes and other niche product categories which command a premium over powdered dyes.
As a result of the method of its manufacture, polyacrylonitrile will contain sulfonate groups at the end of the polymer chains, and it will consequently interact with some types of basic dyes.
Cationic, basic dyes that are used as colorants in ballpoint pen inks were chosen as analytes for the cationic dye capillary electrophoresis method development.