Dyestuff industry experts

Disperse TXF Series

Home » Information » Industry Encyclopedia » What is the whitening principle of OBA?

What is the whitening principle of OBA?

Views: 3     Author: Site Editor     Publish Time: 2021-01-20      Origin: Site Inquire

There are many varieties of optical brightener agents, and there are certain brands of whitening agents for the whitening of various fibers.Although the chemical structure and properties of various brighteners are different, the principle of brightening fibers or fabrics is the same.

 optical brightener agents

The principle of whitening is mainly due to the conjugated double bond system in the molecule of the whitening agent, which has good planarity. This special molecular structure can absorb ultraviolet rays (wavelength 300 ~ 400nm) in sunlight under sunlight. The blue-violet light (wavelength is 420~500 nm), the blue-violet light mixes with the yellow light on the fiber or fabric to become white light, which makes the fiber or fabric obviously white.


The brightening effect of optical brightener is only optical brightening and supplementing color, and can not replace chemical bleaching. Therefore, if the fabric without bleaching is directly used for whitening with fluorescent whitening agent, the whitening effect is not ideal. From the principle of the fluorescent whitening agent, the whitening effect of the whitening agent mainly depends on the content of ultraviolet rays in the sunlight and the concentration of the fluorescent whitening agent on the fiber or fabric.


Related Articles

content is empty!

Didn't find what you want?

We look for the best partner to share our product range and our philosophy! Welcome to be our next partner!
You can contact us now and tell us what you need, and we will reply to you immediately.
Contact us




copyright 2020 ©  Hangzhou Tiankun Chem Co.,Ltd