Types & Use of Cationic Dyes in Textile Industry

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Types Use Of Cationic Dyes In Textile Industry
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Use Of Cationic Dyes In Textile Industry
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Cationic Dyes Used in the Textile Industry

• Dyes are used for coloring the thread or fabrics
  in the textile industry. Cationic dyes are quite
  common.
• What are cationic dyes? They are known as basic
  dyes also.
•  
• These are synthetic dyes that are basic, and
  when dissolved in the water, they form a colored
  cationic salt.
• The salt causes a reaction with the anionic site
  on the surface of the substrate.
• Cationic dyes are preferred due to their bright
  shades and high tinctorial properties.

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Use of cationic dyes

• The positive charge is on the basic dye molecule
  called chromophore. On the basic side of the
  isoelectric points the reaction happens.
• Therefore, it is not suitable for cotton fabrics.
  First, the cotton doesnt offer sufficient
  affinity or substantivity. Also, the structure of
  the cotton fabric is not smooth.
• Basic dyes are more suitable for silk, wool, and
  modified acrylic fibers. Cationic dyes are used
  for coloring paper also.
•  
• They work as strong coloring agents. The basic,
  positive radical is the fundamental dying stuff
  here.
• To take up of the dye to the fiber acetic acid
  is used to the dyebath.

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Modified Basic Dyes

• They are developed based on the basic chemistry
  of cationic dyes. These dyes have more extended
  molecular structure than the basic basic dyes.
  Hence, their properties are significantly
  different (and better).
• Due to the longer molecular structure, they have
  more comprehensive coverage and sustainability. 
  Improved lightfastness is a distinguishable
  characteristic.
• Hence, modified cationic dyes are found suitable
  for a variety of dying applications.
• The shade range is quite widespread, and even a
  few florescent colors are also available. Since
  the solubility is excellent in water, application
  of cationic color is not a difficult thing. It is
  required to add glacial acetic acid to improve
  the solubility.

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• As far as exhaustion is concerned, the cationic
  dyes show variable rates. The exhaustion
  characteristic is decided by the K value.
• The higher is the value, the slower the
  exhaustion is. It means the K value 5 denotes the
  slowest exhaustion and 1 indicates the fastest
  exhaustion. When different shades are created,
  dyes of similar K value are chosen.
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• Due to its high affinity for silk and wool, the
  cationic dyes are most suitable. The affinity for
  cellulose is low. Hence, it is not an ideal dye
  for cotton fabric. To dye cellulose, it needs to
  be treated using mordanting agents.
•  

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Read More

• If you are looking for dyes and chemicals
  manufacturers in india then Sagar Colour Co. is
  one of the foremost acrylic dyes, cationic
  dyes and textile chemicals manufacturers in
  Gujarat as well as other parts of India.
• Also Read
•  
• What Are The Multiple Uses Of Textile Auxiliary
  Chemicals?
•  
• 5 Factors To Consider When Buying Dyes For Your
  Business

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CONTACT US

• Phone No- 261 7139999
• E-Mail- sagarcolourco_at_yahoo.com
• Address- 403, Empire Estate, Near Udhana
  Darwaja, Ring Road. Surat 395002, India.

Website- http//dyesmanufacturerindia.com/