Why do different types of dyes change color seriously?

The dye structure is basically divided into three parts: "chromophore root group" "reaction (bonding) root group" "connecting root group"

Chromophore: Light (photons) can be irradiated on this chemical structure (photons hit the chromophore, resonate and emit a specific wavelength) to have a feeling of color.

Reaction (bonding) root group: It can react with the fiber to fix the dye. This is called the reaction root group of the dye. Different fibers, the reaction bonding root group is different. For example, cotton, or nylon/or acrylic dyes have their own Different reactive root groups.

Connecting the root group: between the chromophore root group and the reaction root group, to bridge the chromophore root group and the reaction root group, so that the chromophore root group and the reaction root group become one.

Why is the color jumping (color change) smaller when dyed by similar dyes? Instead of similar dyes, the color is larger.

Countless products have been developed for any type of dyes, but not many products are suitable for the commercial market. If the global dye companies that are suitable for commercialization are competing to imitate them, some of them only slightly change the chemical structure of the dye in order to avoid patents. Therefore, the wavelength spectrum of the dye is very different. near.

Everyone in the dyeing and finishing factory has little difference in technology, and the dyes used are an open secret: the dyes in the dyeing factories are almost the same.

●Therefore, the reason why the color change is small when using the same type of dyes.

For example, the customer who dyed cotton gave the standard color sample of cotton, and the dyed nylon gave the standard color sample of nylon.

●The more dissimilar the dyes, the greater the color change.

At present, computer color matching is definitely effective for the color change (jumping light) of three colors. Find the combination with the lowest color change value for the dye you are currently calculating (that is, the dye in use in the factory), (but it may not be completely eliminated. There is a color change, and the color change value is large or small, unless it is a coincidence)