Disperse Dyes Supplier in Bangladesh

 

Chemical constitution of disperse dyes:

Industrially applied disperse dyes are based on numerous chromophore systems with azo and the reminder distributed among

·         Quinophthalonone

·         Methine,

·         Naphthalimide,

·         Naphthaquinone and

·         Nitro dyes.

·         Azo dyes

Nitro dyes: A group of dyes, aromatic compounds whose color results from the presence of nitro groups- (NO2) and hydroxyl (OH) and amino groups NHR (R is the alkyl or aryl group) the may also contain Cl, SO3H and COOH substituents.

Nitro dyes containing amino groups are more stable. For example, 2K disperse fast yellow is of practical importance for dyeing a number of fibers.

Azo dyes are currently employed to create almost the entire range of shades. Anthraquinone derivatives are used for mainly Blue, Violet & Turquoise hues. The remaining dye classes are used mainly to produce Yellow, Red, Orange etc. hues.

Reasons of dominance Azo chromophores in disperse dyes:

·         The ease with which an extra-ordinary number of molecular combinations can be generated by varying the diazo & coupling components.

·         The relatively simple process by which the dyes can be produced with class of dyes manufacturers can respond much more easily to customers & and user’s requests for Special shades & fastness characteristics.