Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs) are dyes that absorb light in the UV and violet region (usually 340–370 nm) of the electromagnetic spectrum, and reemit light in the blue region (typically 420–470 nm). Fluorescent activity is a short-term or rapid emission response, unlike phosphorescence, which is a delayed emission. These additives are often used to enhance the appearance of color of fabric, paper, and plastics causing a “whitening” effect, making materials look less yellow by increasing the overall amount of blue light reflected.This additives find ready acceptance in Detergents, manufacturing of paper. This results in white paper and clothing being shown up as fluorescent under illumination of UV. They are able to enhance the colour of clothing. Besides this the other applications are in adhesives, non-destructive testing of metal parts and other fields.
Some Optical brighteners recommended from XINGHUA PIGMENTS GROUP：
Optical Brightener Agent OB
Optical Brightener Agent OB-1
Optical Brightener KCB
Optical Brightener KSN
Optical Brightener 127
These products are particularly useful to mask the yellowish cast sometimes observed in plastics and fibers after high temperature processing operations.
About Xinghua Pigments Group (namely, Shenzhen Xinghua Pigment Masterbatch Co., Ltd.)
As the biggest manufacturer of chemical pigments and solvent dyes of South China, Xinghua Pigments Group has over twenty years of professional experience in the pigments and solvent dyes industries and has been covered almost all the organic pigments, organic solvent dyes, masterbatch, Titanium Dioxide and other relative products.
Besides, Xinghua Pigments Group can offer CUSTOMIZED PIGMENTS AND/OR SOLVENT DYES based on PANTONE.
What is more, it is also the core agents and/or partners of many international chemical giants such as CABOT, BASF, CLARIANT, HUNSTMAN (VENATOR), DIC AND LANXESS. We respect, value and cherish every customer, partner and friend, please join us to build a more colorful world together.
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Xinghua Pigments Group