There are generally two classifications of dyes: one is based on the characteristics of the chemical structure of the dye molecules, which is called structural classification. This classification method is suitable for the research of dyes and the application of manufacturing personnel; the other is based on the application performance of dyes. Characteristic classification is called application classification. This classification method is often used by printing and dyeing workers.
(1)Structural classification
According to structural classification, dyes mainly include azo dyes, anthraquinone dyes, indigo dyes, sulfur dyes, methine dyes, triarylmethane dyes, heterocyclic dyes, phthalocyanine dyes, etc.
(2) Application classification
Classified by application, dyes include direct dyes, reactive dyes, vat dyes, soluble vat dyes, sulfur dyes, insoluble azo dyes, acid dyes, acid mordant dyes, acidic mordant dyes, disperse dyes, cationic dyes, phthalocyanine dyes, condensation polymerization Dyes, oxidation dyes, fluorescent dyes, etc.
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