Sep. 28, 2019
Find here OBA For Polyester Fiber on our website. Today we would like to talk about discovery and research process of fluorescent whitening agent OB.
In the 1920s, researchers discovered the principle that certain substances can whiten: some diphenyl rings can absorb light in the ultraviolet band and release blue or blue-violet fluorescence. If such a substance is applied to a white object, the ultraviolet light that is not visible on the surface of the object can be released into visible light, which is equivalent to increasing the light perception of the object.
In addition, if the white object itself has impurities, it will be pale yellow, and this color can be blocked by light blue fluorescence. Thus, these substances which absorb ultraviolet light to release visible band fluorescence are named "fluorescent whitening agents".
For the next two or three decades, scientists are working on organic fluorescent methods to make a variety of Fluorescent Whitening Agents in order to make them perform better and more stable.
By the 1950s, various fluorescent whitening agents began to enter the market on a large scale, becoming a common additive in white matter such as paper, textiles, and plastic products. That is to say, from this point on, the fluorescent whitening agent was added to the detergent, but there was no such high-grade product as the laundry liquid at that time.
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