Classification and properties of disperse dyes

According to chemical structure, disperse dyes are mainly divided into two categories: azo type and anthraquinone type, as well as those containing heterocyclic structures such as nitrostyrene and benzimidazole.

According to application performance and color fastness, it is usually divided into:

(1) Low temperature type (E type) is suitable for high temperature and high pressure dyeing and carrier dyeing, with poor sublimation fastness and good levelness.

(2) The medium temperature type (SE type, M type) is suitable for high temperature and high pressure, hot melt pad dyeing, and can also be used for carrier dyeing, with medium sublimation fastness and medium level dyeing.

(3) High temperature type (S type, H type) is suitable for high temperature and high pressure, hot melt pad dyeing, good sublimation fastness and poor level dyeing.