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Classification Of Dyes

Date:Jul 01, 2019

Folded disperse dye

Disperse dyes, disperse dyes, this class small water soluble dyes, dyeing with dispersant is fragmented and make hydrophobic fiber dyeing (polyester, nylon, etc).

Fold ice dye

Ice dye (azoic dyes) as insoluble azo dyes, dyeing to needs (0-5 ℃) under the condition of freezing, directly by the diazo and accidentally grouping precipitation reaction on fiber dyeing.

Folded cationic dye

Cationic dyes, cationic dyes) gained the name for the cationic status in the water. Used for dyeing acrylic fiber, often incorporated into basic dyes.

Folded reactive dye

Reactive dyes (reaction dyes) existing in the dye molecules can react with fiber molecular hydroxy and amino groups. To stain a fiber by forming covalent bonds with it. Also known as reactive dyes. Mainly used for cotton, hemp, synthetic fiber dyeing, also can be used for protein fiber coloring.

Folded direct dye

Direct dyes, direct dyes) between the dye and fiber molecules to Fan Dehua force and hydrogen bond, the combination of molecules containing sulfonic group, carboxyl and soluble in water, in the form of anion in water, can be directly dyed fiber.

Folded acid dye

Acid dyes, acid dyes) in acid medium, in the dye molecules containing sulfonic group, carboxyl and amino to molecules of the protein fiber in ionic bond, it is mainly used for protein fiber (wool, silk, leather) staining.

Folded polycondensation dyes

Polycondensation dye (polycondesation dyes) this kind of dyeing off when water soluble groups condensation into macromolecular insoluble dyes attached on the fiber, referred to as a condensation dyeing. In addition, there are oxidation dyes, sulfur dyes and so on

Folded VAT dye

VAT dye (VAT dyes) have both insoluble and soluble in water. The insoluble dyes are reduced to soluble in alkaline solution, and the dyes are oxidized to restore their insoluble properties on the fibers and color the fibers. Solubility saves one step of reduction. The dyes are mainly used for dyeing and printing cellulose fibers.