Vat Dye

VAT dyes are insoluble in water. Before dying they need to be reduced and solubilized by reductive agent in alkaline solution, then dyeing. They are brilliant in shades, full range in colours and of good dyeing fastness properties on fibres. They also have good levelling, dispersing property and high affinity for cellulose fibres. Most of them have excellent light and washing fastness, so vat dye is one of the most important synthetic dyes.

As the leuco compounds of vat dyes possess high affinity for both natural and regenerated cellulose fibres, they are extensively applied for cotton, linen and viscose. There are many ways of dyeing for vat dyes viz. exhaustion, jig and continuous pad-steam, tie & die, etc.

This dyes are given good overall fastness property

Its application process is near similar as Sulphur dyes.

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I have provided information about vat dye, according to following instruction.

Vat dye is used for textile materials

vat dye

These dye are not properly soluble in water.

Vat dyeing is also called indigosols.

Vat dyes is the oldest base dye. This dye are made from natural plants.

This dye are normally made from naturally not synthetically.

Vat dye is more suitable for cellulosic Fiber for best overall fastness properties.

This dye is also be called indigo dye which is windly use for dyeing of denim fabric.

Vat dye is the one of the most important or popular dye in the world in Present time.

Vatting process is must be necessary before dyeing.

It Can be converted insoluble to soluble form with the help of vatting process.

This is the reasons, that vatting process is very important before dyeing.

This dyes have good affinity for cellulose materials.

In case of vat dyeing, vatting process is necessary to required before dyeing.

In case of vatting process, converting insoluble vat dye by strong reducing agent.

They are substantively for cotton. Reducing agent is used in vat dyeing.

most commonly (Na2S2O4) it’s helps to convert easily in leuco form.

This vat dyeing process is used from very long time in textile industry for dyeing of cellulose materials.

vat dyeing process is used for production of denim, jeance products.

Vat dyeing process is very complex compared with other dyeing methods such as reactive dyes,basic dyes.

What is vat dye in textile?

Vat dye is used for coloration on textile materials, such as cotton materials. vat dye are made from naturally, so vat dye is called indigo dye. it is natural Colouring

materials. Vat dye are insoluble in water but with the help of vatting process vat dye is easily soluble in water. then dyeing is done. i mean to say that vatting is required for before

dyeing.

What is solubilised vat dyes?

Solubilised vat dyes are properly soluble in water and windly used for cellulosic materials. Solubilised vat dyes is gives pale shade and light shade. and this dyes is easily panatrate

on surface of cellulose materials. and easy to solubilised it means, this dyes having good solubility. This is also called indigosols.

What is oxidation dyeing vat?

oxidation dyeing vat, in this process wet treatment (washing) is carried out after dye absorption by the fibre.

In case of wet treatment ( washing is carried out with hydrogen peroxide).