Dye News

The Principle of Fiber-Formed ColorAzoic dyes, also known as naphthol dyes or ice colors, represent a fundamentally different concept: rather than using a pre-manufactured soluble dye molecule, the color is synthesized directly inside the fiber from two colo...

Mordanting and the Dye-Metal-Fiber ComplexMordant dyes are a class of dyes that have little or no direct affinity for the fiber unless a metallic salt — the mordant — is applied to the fiber before, during, or after dyeing. The mordant forms a co...

China's Dye Industry Accelerates Global Expansion The dye industry is a core fine chemical sector supporting the textile industry. After years of iterative upgrading, China's textile synthetic dye production capacity accounts for 68%-72% of the global...

Disperse dyes were first produced commercially in 1922 by BASF in Germany, initially used for dyeing cellulose acetate fibers. In 1923, the British first added selected auxiliaries to the raw dye and pulverized it, creating a dispersion of insoluble disperse...

Phthalocyanine Dyes — The Remarkably Stable Blues and Greens The Phthalocyanine ChromophorePhthalocyanine dyes and pigments are built around one of the most stable and intensely colored chromophores ever discovered. The parent compound, metal-free pht...

Coloring the Non-Aqueous World Definition and Chemical FeaturesSolvent dyes are a class of colorants defined not by their chromophoric structure but by their solubility characteristics: they are soluble in organic solvents and non-polar media but essentiall...

Fluorescent Dyes and Optical Brighteners — Light Beyond Simple Color The Physics of Fluorescence in DyesFluorescent dyes and optical brighteners belong to a special category of colorants that not only absorb visible or ultraviolet light but also re-em...

Disperse dyes are a critical category of non-ionic dyes widely used in the textile industry, specifically engineered for coloring synthetic fibers. Unlike water-soluble dyes that dissolve directly in water, these dyes feature compact molecular structures without strong hydrophilic groups—...

I. What Are Direct Dyes: The Nature and Historical Origins of Substantivity Direct dyes are a class of water-soluble dyes capable of coloring cellulosic fibers directly in a neutral or weakly alkaline dyebath without the need for mordants or other chemical ...

I. The Chemical Essence of Vat Dyes: The Ingenious Transformation from Pigment to Dye Vat dyes are a class of colored organic compounds that are inherently insoluble in water. Their dyeing process must undergo a unique chemical transformation step — u...