Market Research Brighteners in Special Paper Chemicals in China

Feb. 18, 2011 - PRLog -- Brighteners are commonly added to laundry detergents to replace whitening agents removed during washing and to make the clothes appear cleaner. Optical brighteners have replaced bluing which was formerly used to produce the same effect. Some brighteners can cause allergic reactions when in contact with skin, depending on the individual.
Brighteners are used in many papers, especially high brightness papers, resulting in their strongly fluorescent appearance under UV illumination. Paper brightness is typically measured at 457 nm, well within the fluorescent activity range of brighteners. Paper used for banknotes does not contain optical brighteners, so a common method for detecting counterfeit notes is to check for fluorescence.
Optical brighteners have also found use in cosmetics. One application is to formulas for washing and conditioning grey or blonde hair, where the brightener can not only increase the luminance and sparkle of the hair, but can also correct dull, yellowish discoloration without darkening the hair. Some advanced face and eye powders contain optical brightener microspheres that brighten shadowed or dark areas of the skin, such as "tired eyes".
A side effect of textile optical whitening is to make the treated fabrics more visible with Night Vision Devices than non-treated ones. This may or may not be desirable for military or other applications. Optically brightened paper is often not useful in exacting photographic or art applications, since the whiteness decreases with time.
End uses of optical brighteners include:
1.   Detergent whitener (instead of bluing agents)
2.   Paper brightening (internal or in a coating)
3.   Fiber whitening (internal, added to polymer melts)
4.   Textile whitening (external, added to fabric finishes)
5.   Color-correcting or brightening additive in advanced cosmetic formulas (shampoos, conditioners, eye makeup)

China has big power on SPCs industry (in third place only to the US and Japan), in these few years, the market of 不brighteners keeps growing steadily, and it will gain momentum in the future.

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