Application Method of Dyestuff According to Fiber

There are number of a section of tactics for classification of dyes. Generally dyes or dyestuff are classified in accordance with their origin, utility, and chemical architecture and properties. Dye producers classify dyes primarily classy on their chemical properties, at the similar time as dyers classify dyes primarily classy on the means of utility. In this article I have classified dyes in accordance with fiber characteristics.

Fig: Classification of dyes

Classification of dyes in accordance with utility:

Fiber taste

Direct dye

Cotton, linen, viscose, jute and silk.

Simple diffusion of dye into fiber from aqueous answer.

Relative awful fastness to scrub, light and perspiration.

Reactive dye

Cotton, linen, viscose, jute, silk, wool

Dyestuff makes chemical link with fiber.

Very decent fastness to scrub, light and perspiration.

Cotton, linen, viscose

Insoluble dyestuff is made soluble by slicing agent that would possibly diffuse into fiber after which insoluble by re-oxidation.

Very decent fastness to scrub, light and perspiration.

Cotton, linen, viscose

After diffusion into fiber, two diverse chemicals are made to react jointly to taste the insoluble coloration.

Sulphur dye

Cotton, linen, viscose

Insoluble dyestuff, similar to vat.

Fast to washing but now not light.

Disperse dye

Polyester, nylon, acetate.

Water insoluble; utilized from dispersion; diffuse into fiber at top temperature.

Good fastness properties.

Wool, silk, nylon

Applied from an acidic dye tub.

Depend on dye and fiber tub.

Acrylic, jute

Reaction with acidic within sight.

Good fastness properties on acrylic.

Metal demanding

Wool, silk, nylon

Inside fiber, it makes sizable molecules with aggregate of chromium or cobalt with chromophores.

Good fastness properties consequently of sizable size.

Wool, silk, nylon

Inside fiber, it makes sizable molecules with aggregate of chromium or cobalt with chromophores.

Good fastness properties other than rubbing.

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