Direct dyes are common coloring products that are often used in the textile industry. These dyes are basically sodium salts of sulphonic acid and they belong to the azo group which is the main chromophore. The process of direct dye application is managed in alkaline condition. The dyeing process is done usually inlow temperature. Once the dyes are absorbed, they tend to bleed and this causes unevenness of shade. The direct dyes function as anionic dyes that are substantive to different types of cellulosic fibers that are applied from the aqueous bath consisting of electrolyte. A lot of these also function as dye protein fibers. The good thing about the direct dyes is that they are quite easy to apply. They can also be readily available in the dye and paint market.
A leading direct dyes manufacturer in India excelsin producing high-quality dyes that can help in achieving excellent coloring results. The direct dyes are mainly anionic in nature and they require electrolytes for exhaustion. These water-soluble dyes can be used for the dyeing and coloring process in alkaline condition. The direct dyes are commonly applied for protein fibers and cellulosic fibers. The fastness properties tend to be rather poor when it comes to wet fastness. The fastness of the direct dyes can be improved significantly after the treatment.They are also some of the most affordable dyeing products that are available in the market. However, it is important to note that direct dyes are not as frequently used as reactive dyes.
Also known as substantive dyes, the direct dyes show a strong and a direct affinity to numerous types of fibers. They typically adhere to fibers through non-ionic forces. The direct dyes stick to the fabrics through a process of the hydrogen bond. The colorfastness of these dyes is really good. There are currently many different types of direct dyes that are available in the market. These dyes can be classified according to their chemical structure and SDC classification. According to the chemical structure of these dyes, they can be classified as Monoazo dyes; Diazo dyes; Triazo dyes and Polyazo dyes. The inherent chemical nature of the direct dyes makes them suitable for coloring upholstery, different types of window coverings, and heavy bedding items. In other words, direct dyes are suitable for applications where washing is kept to a bare minimum.
A leading manufacturer of direct dyes in India can come up with superior quality products that can match your production requirements in the best possible manner. You can also get different types ofreactive dyes and other types of dyes from these companies if you are looking for them. The reactive dyes are named in such a way as they tend to react with the fiber molecules. They are typically known to offer excellent coloring results. The best reactive dyes manufacturer in India makes use of superior production techniques to produce colors that can be very good for the textile industry.