Why Choose Metal Complex Dyes

Why choose Metal Complex Dyes?

What is Metal Complex Dyes？

Metal complex dyes are premetallised dyes that show great affinity towards protein fibers. In this dye one or two dye molecules are coordinated with a metal ion.

The dye molecule is typically a monoazo structure containing additional groups such as hydroxyl, carboxyl or amino, which are capable of forming a strong co-ordination complexes with transition metal ions such as chromium, cobalt, nickel and copper.

Metal-complex dyes belong to numerous application classes of dyes. For example, they are found among direct, acid, and reactive dyes.

Role of Metal

Mostly the light fastness and the wash fastness of the direct dyed fabrics particularly cotton can be improved by the after treatment with metal salts of copper and chromium.

The role of the metal atom is to form a complex with the dyestuff already present on the fabric

TYPES of Metal Complex Dyes

The classification of metal complex dyes is dyes is based on the basis of number of dye molecules which are complexed with one metal ion

1:1 metal complex dyes: In 1:1 metal complex dyes one metal ion is complexed with one dye molecule. 

2:1 metal complex dyes: In 2:1 metal complex dyes there are two dye molecules which are complexed with one metal atom.
 

FEATURES of Metal Complex Dyes

· Medium washing fastness.

· Excellent, light-fastness.

· Shows very good level dyeing and penetration characteristics.

· Can cover up for the irregularities in the substrates.

APPLICATION of Metal Complex Dyes

Metal Complex Dyes is used for a variety of applications like wood stains, leather finishing, stationery printing inks, inks, coloring for metals, plastic etc.

BENEFITS  of Metal Complex Dyes

Protect wool/cashmere quality 

Simple process,easy to control production,less sewage discharge.

Good reproducibility from sample to mass production,high reproducibility between cylinders

No pre or post after treatment with metal salts is required

Our company is dedicated to metal complex dyes for many years, involving products: 

Solvent yellow 21， Solvent orange 62，Solvent brown 43，Solvent black 27.

>> For more Technical Data or Introduction of Use, please don’t hesitate to contact us.