Kolorjet Chemicals

HomeProfile Product RangeIndustriesInfrastructureOur QualityCustom ManufacturingNetworkContact UsSend Enquiry

Dyestuffs| Inkjet Dyes | Dyes for Wax Printing | Textile Auxiliaries | Optical Brightner | Caramel Color | Synthetic Food Colors
Natural Food Colors| Pigments| Inorganic Pigments| Dyes Intermediates| Resist Salt| Klostrozal Dyes for Soap And Detergent


Kolorjet ChemicalsKolorjet ChemicalsKolorjet Chemicals

Colour Index | Dyes | Pigments | Applications | Glossary | FAQ's | Buyers Guide | Global Dyestuff Industry



What is Dye
Types of Dyes

Digital Textile Printing Dyes

Inkjet Dyes

Metal-Complex Dyes

Optical Brighteners

Sublimation Dyes

Dyes Intermediates

Leather Dyes

Natural Dyes

Smoke Dyes

Synthetic Dyes

Leuco Dyes

Oxidation Dyes

Solvent Dyes

Textile Dyes

Basic Dyes

Acid Dyes

Reactive Dyes

Direct Dyes

Fluorescent Dyes

Dye House
Dyeing Process

Home » Product Range » Dyes » Leuco Dyes

Leuco Dyes

Quick Enquiry
*Please Describe Your Requirements:
*Your Name :
*Your E-Mail :
*Country :
*City :
*Mobile :
{short description of image}
A leuco dye is a dye whose molecules can acquire two forms, one of which is colorless. Leuco dyes are a key component of some thermochromic dyes and thermal printer papers, photochromic materials, and of the Flexplay DVD discs with limited play time, where leuco form of methylene blue is used.

A prominent example can be given is that of the spiro form of an oxazine, that is typically a colorless Leuco Dyes. Another example of leuco dye is the crystal violet lactone. This dye while in its lactone form is typically colorless or perhaps slight yellowish, but in conditions of low pH, as it is protonated, it shows the color that is intense violet. Other examples can include phenolphthalein and thymolphthalein, which undergo reversible color change between colored and colorless form at a specific electrode potential.





Features of Leuco Dyes



Functioning of Leuco Dyes

Leuco Dyes require a special system i.e. combination of chemicals; their functioning is different from other dyes. For protection of this special system of materials a process called Microencapsulation is put to good use. The process of microencapsulation works like this, in the beginning it extracts a small droplet out of the Leuco Dye system and puts protective wall coating around it. This process is effectively shown in the photo-micrograph.

As the image shows, actually it is these Leuco microcapsules that has in it the complete color changing thermochromic system. For example Leuco Dyes microcapsules when added in inks makes the ink display the necessary thermochromic properties.


Application of Leuco Dyes

Leuco Dyes are used for a widely used in various applications, materials and products. Examples: security printing, novelty bath toys, swimming pool toys, battery testers etc.


Limitations of Leuco Dyes

It is generally seen that the life expectancy of Leuco Dyes are shortened by:



Colour Index | Dyes | Pigments | Applications | Glossary | FAQ's | Buyers Guide | Global Dyestuff Industry

HomeProfile Product RangeIndustriesInfrastructureOur QualityCustom ManufacturingNetworkContact UsSend Enquiry

Member INDIAMART© Kolorjet Chemicals Pvt Ltd. All Rights Reserved (Terms of Use)
Developed and Managed by IndiaMART InterMESH Limited