Fluorescent brightener

The fluorescent brightener is sodium stilbene biphenyl disulfonate. It is a fluorescent dye, or white dye, and a complex organic compound. Its characteristic is that it can excite the incident light to produce fluorescence, so that the dyed substance can obtain a sparkling effect similar to fluorite, and make the substance very white to the naked eye.

Fluorescent whitening agent is a kind of color conditioning agent, which has the effect of brightening and brightening, and is widely used in many fields such as papermaking, textiles, and detergents. There are about 15 basic structure types and nearly 400 structures of fluorescent whitening agents. There are two types of fluorescent whitening agents that are allowed to be added to laundry detergents in China: distyryl biphenyls (such as CBS, etc.) and bistriazine aminostilbenes.

The principle of fluorescent whitening agent is to absorb the invisible ultraviolet light in the light and emit visible blue light. After superimposing with the yellow light emitted by the fabric, it complements the white light, which increases the white light emitted by the fabric. The naked eye can feel that the white fabric is obvious. Become brighter, this is the brightening effect. Fluorescent whitening agent can absorb invisible ultraviolet light (wavelength range is about 60-380 nm), and convert it into blue light or purple visible light with longer wavelength, so it can compensate the unwanted yellowish color in the matrix, and at the same time reflect It turns out that the incident wavelength is more visible light in the range of 400-600 nm, so that the product appears whiter, brighter and more vivid.

Post time: Jun-13-2023