Why are fluorescent whitening agents added to white paints
Paint whitening agent is an essential chemical additive for many paint manufacturers. The whiteness, brightness and vividness of the paint can be obviously improved only by adding 2/10,000 to 5/10,000 whitening agent. Why is this paint whitening agent highly sought after as soon as it comes out? We summarized the following three reasons.


Paint whitening agent can increase the whiteness of paint.

20240415091942307


With the improvement of living standards, people's aesthetic appreciation for the appearance of products is getting higher and higher. The appearance of white paint directly affects the sales volume of products, so how to improve the whiteness of paint is a never-out-of-date topic. Ordinary pigments added in paint only have the effect of physical whitening. Although they can have whitening effect, there is no way to completely remove an old yellow layer on the paint surface. Paint whitening agent belongs to optical whitening, which just makes up for this defect. Paint whitening agent can absorb ultraviolet rays in natural light, and then convert them into blue-violet light visible to the naked eye and emit them. Blue light and yellow light are complementary colors, and when they are mixed, they become bright white light, and the old yellow light is swept away.


Paint whitening agent can increase the brightness of paint.


If the paint only has whiteness and lacks brightness, the whole color will appear very dull, so while increasing the whiteness of the paint, the brightness of the paint should also be improved. Ultraviolet rays are invisible to the naked eye, and fluorescent whitening agents can transform them into blue-violet light visible to the naked eye, which virtually increases the reflection of paint. Furthermore, the reflective coefficient of fluorescent whitening agent is relatively high, which increases the total amount of reflection again. Therefore, the effect of paint whitening agent on increasing brightness is very obvious.


Paint whitening agent can increase the weatherability of paint.


Weatherability means being able to withstand the wind and the sun, and won't turn yellow or change color for three, five, ten or even longer years. In fact, the yellowing of paint is irreversible, but how to delay the occurrence of this reaction is the key. Many paints were white and bright at first, but then they stopped working and became dark and yellow. As we all know, ultraviolet ray is the chief culprit that destroys the essence of paint and causes it to age and turn yellow. The function of fluorescent whitening agent to absorb ultraviolet ray just solves this problem and effectively increases the weatherability of paint.

Already the first
Is the last one