A Complete Guide for the Use and Working of Reactive Dyes

In the realm of the textile industry, it is very important to choose the best dyes that fit all your requirements and meet your very necessary needs. Every dye used in different industries possesses different properties, workings, and applications. Thus, to help you with one of the most demanding dyes in textiles and all other industries, reactive dyes, we present this article. This will help you learn everything about reactive dyes, from their working to how to use them and their applications, as well as help you choose one of the best reactive dyes manufacturers in India that stands out to all your needs for dye, from different hues of colors to their premium quality, just like us, Alliance Organics.

Understanding Reactive Dyes and Their Different Types

Reactive types are the best-used dyes for textiles like cotton, linen, nylon, silk, and others due to their strong color-imparting properties and wash or light fastness because of the strong covalent bond formation with the molecules of fibers. This property of reactive dyes has made them be used in different industries, enhancing their look and attracting more customers to buy and enjoy their enhanced durability. Depending on their different chemical properties and behaviors, reactive dyes are classified into different types, including:

  • Reactive Dyeing Mechanisms: These dyes have different reaction mechanisms that involve the maintenance of different temperatures to ensure the uniform distribution of colors, thus imparting a bright color with different shades to the fibers.
  • Methods of Dyeing: These dyes are classified based on their different dyeing methods, from continuous to exhaust dyeing and so on. These dyes are thus used in different textile industries, depending on the quantity of fabrics to be dyed.
  • Different Reactive Groups: These dyes are classified based on the different reactive groups present, which form a strong covalent bond with them, thus imparting a very deep color with increased durability and excellent tinting.

What is the Working Mechanism of Reactive Dyes?

To work and get the best results from the reactive dyes, you need to follow these steps to make the dyeing molecules and fiber molecules form strong bonds, thus imparting good color with excellent properties. Here’s a complete preview of the working guide for reactive dyes:

  1. Fabric Pre-Treatment: Before adding dye to the fabrics, they undergo a pre-treatment process to remove all the impurities, and lumps ensure that the dye goes deep in the fibers and forms a strong bond with its molecules, imparting a dark color and spreading it evenly to all the corners. This is the most important step in dyeing a fiber, which involves the washing, cleaning, entangling, and bleaching of the desired fibers to be dyed.
  2. Application of dyes: Now comes the next step of applying the dyes to the bleached and cleaned fibers. This process involves mixing the dyes with water, making them soluble, and then dyeing the fibers, which can be done with simple methods of printing, immersing, or spraying, which are determined by the quantity of fabrics to be dyed and the time consumption of the process.
  3. Fixing Process: The next process in dyeing fabric is to fix its coloring properties by washing the dyed fabric with alkaline powder, especially soda ash. This helps in finding the color of the dyed fabrics as they form a covalent bond with each other, thus bringing their pH level to levels that meet all the requirements of colors and properties.
  4. Milling Process: This is the simple washing process that involves the washing of the dyed fabric to ensure there are no unreacted dyes or lumps present to be used for further processes in making the different products that involve clothes or other house decor items.
  5. Finished Products: Once everything is done, you get the finished product as the dyed fabric, which is ready to be used in different industries to make their final products like clothes, decor items, or anything else.

How Do You Use Reactive Dyes?

To get the best results from dyeing, you must know its working process and how to use the reactive dyes. Thus, some of the important tips to use it more effectively are as follows:

  1. Select the Correct Dye: To get the best and desired result from reactive dyes, choose the best quality dyes from Alliance Organics that provide the best quality to ensure effective properties with bright and long-term coloring properties.
  2. Fabric pre-treatments: Ensure to treat the fabric with proper washing, cleaning, and bleaching processes to remove impurities and enhance their covalent bond formation to impart bright colors with excellent properties.
  3. Controlled conditions: The dyeing process of fibers needs to have a controlled temperature, pH, and other dyeing conditions that need to be well-maintained to get the best and desired result as per your requirements.
  4. Thorough Fixation and Washing: Follow the complete fixing and washing steps of dyed fabrics to make a better result and increase the properties of fastness and durability of the fabrics, ensuring to maintain their delicacy with each step.
  5. Finished Product: Always ensure to handle the finished products with care, like their storage and transportation, to never mess up the dyed fabrics and get a durable, consistent color throughout their use and production.

Reactive dyes are thus one of the most widely used dyes to impart color along with the important properties of light or wash fastness, durability, strength, and maintaining the delicacy of various fabrics like wool, silk, etc. These dyes are thus one of the increasingly used dyes in different factories, from textiles to papers, inks, and leathers as well. These are thus one of the most essential dyes and are manufactured by every dyeing industry in India. But the one that is known to be the best reactive dyes manufacturer in India due to their wider range of dyes and premium quality, ensuring safety and long durability with stable colors, is Alliance Organics. So contact us now and get your fabrics dyed in premium quality hues with our reactive dyes

Everything to know about Reactive Dyes

There are a lot of different kinds of dyes that are used in the making of colored fabrics.
However, in the manufacturing of fabrics like Cotton, reactive dyes are most commonly used. It is known that a lot of textile manufacturers working on cotton fabrics choose to procure their dyes from the most viable reactive dyes suppliers in India. In order to understand the importance of the best dye manufacturers, it is important to know how reactive dyes work and why they are most suitable for fabrics like cotton. In the application process of a reactive dye, the dye reacts with the surface to form a chemical bond with the fiber and the process then leads to the dye becoming a part of the fiber. The chemical reaction that takes place in the process of dying is what gives the name ‘reactive dyes’ to the range of dyes

It is observed that among a lot of different dyes options, the reactive black dye is most widely demanded which is why the best reactive black dyes manufacturers have commonly sought after. reactive dyes suppliers in India are also in great demand because the variety of dyes has very good light and wash fastness. The reactive dyes also end up giving a brighter and more attractive appearance to the fabric on which it is applied, which is why textile manufacturers choose to use the dyes variety. More and more textile manufacturers also place their bets on the reactive dyes because the method of dying with the dyes is simple and needs lower dying temperatures helping in further speeding up the process.

While the reactive dyes have a wide range of advantages for textile manufacturers, the most important characteristic of the dyes is that the best reactive dyes suppliers in India are able to provide the dyes at the most economical ranges. The affordability of the dyes variety is another factor that gives a great push to its sales and use. It is also known that reactive dyes are sustainable in nature, which is something that is highly preferred by a lot of textile manufacturers. Using sustainable dyes can help manufacturers in doing their bit for the environment. Reactive dyes suppliers in India, vouch for the fact that the range of dyes is eco-friendly because they are not known to be as chemically harmful as some other dyes are. The dyes also indirectly help in reducing waste as the dyes have a longer life which also contributes longevity to the textiles that they are applied to.

With the characteristics and the advantages of reactive dyes, CARE ratings suggest growth of about 8.5% by the financial year 2022. It is also predicted that the growth will mainly see a steady increase because of the export volumes of the reactive dye manufacturers in India.

Why are eco-friendly dyes trending in the global markets?

The disruption in the dyestuffs industry began two decades ago. With the advent of eco-friendly dyes, there is yet another adjustment – business towards Asian markets. Indian intermediates seem to emerge as popular suppliers for the global textiles and fabric sector. It boosts the viability of the fashion industry which dangles on processes of fabric creation to a large extent.

We put the spotlight on acid dyes manufacturing processes required for the textile sector. They are used globally for wool, nylon and silk.

Overview of trends in acid dyes

India has the best production quality for dying processes. Manufacturers have caught up with the trends even offering acid dyes for direct printing on various protein materials made of wool, viscose and silk.  There is nothing toxic about these eco-friendly dyes. These dyes have a classification depending on the characteristics they exhibit. These could be towards affinity to dying or the chemical structure.

The following graph depicts the 3 classes

Why global buyers are turning to Asian Dyestuffs Manufacturers?

India, in particular, is the current hub for Dyestuffs Production. Knowing fully well that there is a demand in the global market the manufacturers pay special attention to:

  • Investment in extensive Research and Development for product creations
  • Treatment of pollution vis-a-vis processes
  • Capital investment and cost involved by Indian manufacturers

Why are eco-friendly dyes trending?

Various dying and finished processes have come into focus as demands for clothing constantly progress. Globally enhancement in this sector is pressurized by the fashion industry and the end consumer to make processes more environmental-friendly. People are more health conscious and prefer wearing fabrics that support the ecosystem and human resources involved in the manufacturing process. The use of biodegradable dyes does not impact the rivers and workers adversely. European manufacturers decided to modify processes much before Asian markets. But being an expensive proposition the trending demands of the textile industry have shifted towards Asian countries. The water wastage and treatment of pollution by manufacturers are keeping them in business. The thrust towards meeting demands also involves the cost-effective production of various classes of dyes.

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Best Practices Used by Asian Dye Manufacturers

  • Adopting novel processes in manufacturing
  • Usage of appropriate dyes for different industrial applications
  • Investment in research and development
  • Treatment of water pollution to keep workers and eco-system safe
  • Meeting the demands of global clients promptly
  • Helping them to produce fabrics that meet end consumer sensibilities
  • New technologies are used to reduce wastage of water
  • Apart from the capital investment meeting updated regulatory policies
  • Timely delivery to clients

Indian manufacturers based in Gujarat and Maharashtra support the production of eco-friendly dyes and help their textile clients to compete globally. They now play an important role in supplying products all over the globe. Apart from producing good quality acid dyes a comprehensive portfolio also includes basic dyes, solvent dyes, direct dyes and reactive dyes.

Analytical applications of pH indicator by dye manufacturers

Testing via pH indicators is a critical process done by dye manufacturers for their clients.
Since it has targeted analytical applications it has to be monitored as dyes are very
sensitive to pH alterations. Colorants can have a marked change if testing is faulty and it
does not meet the client’s specific purpose. Compatible pH ranges affect the processes for
the creation of all product lines. That is why pH indicators have a large role play in this
industry.

To understand how dyes will be impacted, this testing procedure needs to be
implemented methodically at the manufacturer’s laboratory.

What do pH indicators do?

The indicator can work as a halochromic chemical compound. It is blended with
a solution in small measures to get the ideal pH range. Various indicators reveal the color
and change its physical properties. For example, methyl orange is used as a pH indicator
which is useful for dyeing and printing textiles sectors. It can be developed according to the
industry standards by optimal testing procedures. The halochromic materials for textiles

have diverse end-use applications. The help of pH sensors, adds to the economic
dyeing process with limitations. Fast colors are always preferred by customers who use
fabrics for many purposes. Hence, the pH sensitivity and its color-changing characteristics are
important for different materials. There is always a performance gap between lab testing
and the actual dyeing process as fibre interactions fluctuate. Hence, manufacturers develop pH
sensors with indicator dyes. It is used in the traditional dyeing process. The pH solution has
to be compatible with the solution for dissolving dyes. That is why some dyes are always used
with caution. They cause problems and only technical experts can identify the areas
being affected. They offer trusted solutions for proper testing with the right instruments.

What does testing involve?

When testing is done for end-uses of the pH indicator analysis, it is measured for color
fastness for:

 Laundering
 Light
 Unfinished & Finished dye pH responses
 Determination of the response time
 Water and oil repellency

Why analysis of pH sensitivity is significant?

The sensors are indicative of the safety level or the harm they can have on the skin after
prolonged use. Hence, the industry needs to be more sensitive not only towards
the environment but also to human skin. Textile fabrication processes need advanced
solutions to tackle sensitivity. Thus indicator functions are important and integral in the
finished products.

pH indicator dyes other applications

While it cannot be argued that pH indicator dyes are prominent for fabrics and dyeing
processes. As biological stain dyes, they reveal structures in medicine to study polymer
foundations. Metal ions are detected by testing methods.

They are also used for:
 Water Treatment
 Product Sanitization
 Analysis in laboratories

The usage indicates if there is any other foreign substance which is visible when the color
changes.

Some of the leading pH indicators and biological dyes are:
 Eosin
 Acid Red 92
 Fluorescein
 Methyl Orange
 Titan yellow
 Basic Brown

These applications are prominent in the dyeing and printing textile sectors. Indian
manufacturers offer a wide range of tamper-proof finishes to cater to global demands annually.