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Paper Dyes, Paper Dyes India, Paper Dyes Gujarat, Paper Dyes Ahmedabad, Paper Dyes Manufacturer, Paper Dyes Manufacturer India,  Paper Dyes Manufacturer Gujarat, Paper Dyes Manufacturer Ahmedabad
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Paper Dyes, Paper Dyes India, Paper Dyes Gujarat, Paper Dyes Ahmedabad, Paper Dyes Manufacturer, Paper Dyes Manufacturer India,  Paper Dyes Manufacturer Gujarat, Paper Dyes Manufacturer Ahmedabad
Paper Dyes, Paper Dyes India, Paper Dyes Gujarat, Paper Dyes Ahmedabad, Paper Dyes Manufacturer, Paper Dyes Manufacturer India,  Paper Dyes Manufacturer Gujarat, Paper Dyes Manufacturer Ahmedabad
 
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Direct or substantive dyes are mainly used to dye materials made from natural or regenerated cellulose (e.g., cotton, jute, viscose, or paper) without employing mordants as auxiliaries. The essential requirement for classification of a dye in this group is its substantivity, i.e., its absorption from an aqueous salt-containing solution onto cellulosic materials. Direct dyes may be more lightfast, that is, resistant to fading in the light than reactive dyes.
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Acid dyes are water soluble anionic dyes that are applied to fibres such as silk, wool, nylon and modified acrylic fibers from neutral to acid dye baths. Ionic bonds form between the anionic dye and the cationic groups in the fiber leading to dye fixation. They are divided into three main classes:

Leveling dyes: These are small molecules therefore have a high migration before fixation and high level dyeing properties Their wash fastness is low and therefore they are normally not suited for apparel fabric.

Milling acid dyes: Due to their large molecular size, they have better wash fastness but less levelling properties. Some milling dyes have poor light fastness in pale shades. They are generally used as self shades.

Metal complex acid dyes: Made by introducing transition metals with dye precursors, metal complex acid dyes have the highest light fastness and wet fastness and are also very economical. They are available in a variety of vibrant colours.
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Solvent dyes are dyes which are soluble in organic solvents and can be found among the azo, disperse, anthraquinone, metal-complex, cationic, and phthalocyanine dyes. They are non-polar or little polar and do not undergo ionisation. They are insoluble in water and form a colloidal solution in solvents. Different solvent dyes exhibit poor to good lightfastness. They are used for:
  • Manufacturing Flexographic and Gravure Inks for Printing of Aluminum Foil, Metalised Polyester Film, Cellophone and Glassine Paper
  • Transparent Coatings For Aluminium foil, Metalised Polyester Film, PVC PET and Other Plastic Films, Cellophone and Glassine Paper
  • Stationery Inks like Permanent Marker Inks, Ball Point Pen Inks and Felt Tip Pen Inks
  • Leather Dyeing and Colouring
  • Colouring Metallic Yarn
  • Colouring Anodised aluminium and plastic such as cellulose nitrate, cellulose acetate & polyester resin.
  • Colouration of Acetate Films
  • Mass Colouration of Acetate Fibres
  • Paints - General Industrial Paints, Transparent Tin Lacquers, Automotive Refinish Paints and Baking Enamels
  • Two Tone Lacqers for PVC Footware PVC Leather Cloth-Flims and sheets.
  • Manufacture of Shoe Polish
  • Dyeing in Foamed Polymers
  • Coloration of Lubricants
  • Colouring Hot Stamping Foils
  • Wood Stains
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