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Dye Classification
Apr 24, 2018

According to the nature and application of dyes, dyes can be classified as follows.

Water based colorant, oily colorant, water color, essential oil colorant

Ceramic pigment, pigment, pigment, textile pigment and plastic pigment.

According to the source, natural dyes are divided into vegetable dyes, animal dyes, synthetic dyes (also called artificial dyestuffs).

According to the properties of the dye and its application methods

Reactive dyestuff reactive dyestuff, reactive dyes, reactive dyes, soluble reductive dyes, vulcanizing dyes, vulcanizing dyes, phthalocyanine, dyes, dyes, dyestuffs, acid dyes, acid dyes, acid dyes, acid dyes, alkaline and cationic dyes

Reactive dyes, also known as reactive dyes. These dyes are new dyes developed in 50s. Its molecular structure contains one or more active groups. Under suitable conditions, it can react with the fibers to form a covalent bond. It can be used for dyeing cotton, linen, silk, wool, viscose, nylon and vinylon.

Sulphur dyes: most of these dyes are insoluble in water and organic solvents, but they can be dissolved in alkali sulfide solution and can be dyed directly after being dissolved. However, it is not suitable for dyeing protein fiber because of its strong alkalinity. These dyes are homogeneous, low in price and good in color fastness, but the color is not bright.

Disperse dyes: this kind of dyestuff is very low in water and is very fine in the water. It is a non ionic dye, which is a non ionic dye. It is mainly used in polyester dyeing, and its color fastness is high.

Acid dyes: these dyes are water-soluble and contain water-soluble genes such as sulfonic group and carboxyl group. It can directly dye protein fibers in acidic, weak acid or neutral media, but the moisture treatment fastness is poor.