What is a textile dye?

What is a textile dye?

Textile dyes are substances used to color fabrics. The dyes soak into the fabric and change it chemically, resulting in color that stays permanently through repeated use. Today, more than 10,000 substances are classified as textile dyes, and different kinds of dyes work better on specific kinds of fabric.

What is the dyeing process in textile?

A dyeing process is the interaction between a dye and a fibre, as well as the movement of dye into the internal part of the fibre. Generally, a dyeing process involves adsorption (transfer of dyes from the aqueous solution onto the fibre surface) and diffusion (dyes diffused into the fibre).

What are the types of dyeing?

Let’s look at some of them.

  • Direct Dyeing. Direct dyeing is the process of putting dye directly on textile without the use of an affixing agent.
  • Stock Dyeing. Stock dyeing is the process of dyeing fibers before it is spun.
  • Top Dyeing.
  • Yarn Dyeing.
  • Skein Dyeing.
  • Package Dyeing.
  • Warp Beam Dyeing.
  • Garment Dyeing.

What is the method of dyeing?

The dyeing of a textile fiber is carried out in a solution, generally aqueous, known as the dye liquor or dye bath. For true dyeing to have taken place, coloration of fabric and absorption are important determinants.

What are the stages of dyeing?

Stages of Dyeing

  • 1 Stock and Top Dyeing.
  • 2 Yarn Dyeing. 2.1 Skein Dyeing. 2.2 Package Dyeing. 2.3 Beam Dyeing.
  • 3 Piece Dyeing. 3.1 Typically Piece Dyed Fabrics. 3.2 Jet Dyeing. 3.3 Jig Dyeing. 3.4 Pad Dyeing. 3.5 Beam Dyeing.
  • 4 Garment Dyeing. 4.1 Types of Dyed Garments.

Which is basic dye examples?

Examples of basic dyes are methylene blue, toluidine blue, thionine, and crystal violet.

Which of following is basic dye?

Aniline yellow is a basic dyes.

Which is an example of triphenylmethane dye?

Triphenylmethane Dyes Malachite green (9) and Victoria blue B (10) are typical examples. values for many triphenylmethyl dyes are ∼1 V in acidic solution. In their reduced forms, most are blue or purple in neutral solution, changing to green or yellow on acidification, and give intense orange-red colors on oxidation.

Is anthraquinone a dye?

Anthraquinone dyes are an abundant group of dyes comprising a anthraquinone unit as the shared structural element. Anthraquinone itself is colourless, but red to blue dyes are obtained by introducing electron donor groups such as hydroxy or amino groups in the 1-, 4-, 5- or 8-position.

Is Triphenylmethane soluble in water?

Triphenylmethane, or triphenyl methane, is the hydrocarbon with the formula (C6H5)3CH. This colorless solid is soluble in nonpolar organic solvents and not in water. Triphenylmethane is the basic skeleton of many synthetic dyes called triarylmethane dyes, many of them are pH indicators, and some display fluorescence.

Is Triphenylmethane acidic or basic?

Triphenylmethane is significantly more acidic than most other hydrocarbons because the charge is delocalized over three phenyl rings.

How do you purify Triphenylmethane?

Purification Methods Crystallise triphenylmethane from EtOH or *benzene (with one molecule of *benzene of crystallisation which is lost on exposure to air or by heating on a water bath). It can also be sublimed under vacuum.

What is trityl?

Triphenylmethyl chloride or trityl chloride (TrCl) is a white solid with the chemical formula C19H15Cl. It is an alkyl halide, sometimes used to introduce the trityl protecting group.

What is diphenylmethane used for?

Diphenylmethane is widely used in the synthesis of luminogens for aggregation-induced emission (AIE). It is used in the preparation of a polymerization initiator, diphenylmethyl potassium (DPMK).

What is Triphenylmethanol used for?

Triphenylmethanol is used as a reagent in the research laboratory. It acts as an intermediate in the production of the commercially useful triarylmethane dyes. It is used in the preparation of triphenylmethane. It is also used as an antiproliferative agent.

Is Triphenylmethane a dye?

Triphenylmethane dye, any member of a group of extremely brilliant and intensely coloured synthetic organic dyes having molecular structures based upon that of the hydrocarbon triphenylmethane.

What is the chromophore in triphenylmethane dye?

Learn about this topic in these articles: include azobenzene, xanthene, and triphenylmethane. Alizarin contains the anthraquinone chromophore.

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