Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) by fluorescence. Fluorescent emission is a short-lived period of light emission by a fluorophore, unlike phosphorescence, which is long-lived. These additives are often used to enhance the appearance of color of fabric and paper, causing a “whitening” effect; they make intrinsically yellow/orange materials look less so, by compensating the deficit in blue and purple light reflected by the material, with the blue and purple optical emission of the fluorophore.
Optical Brightener (OB) Additive is used to add in polymers for the function of reducing yellowing, improving whiteness, and enhancing the brightness for polymers. This Additive contains highly concentrated Brightener chemicals which improve whiteness and bring bright look for finished products. In addition, the use of this Additive gives smooth and glossy surface of film.
Applications of Optical Brightener Additive in plastic industry
Whitening, brightening for polymers: PP, PE, ABS, …
Brighteners are commonly added to laundry detergents to make the clothes appear cleaner. Normally cleaned laundry appears yellowish, which consumers do not like. So, Optical brighteners have replaced bluing which was formerly used to produce the same effect.
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.
Medical Norm: Attain the Safety Norm for Health and Foodstuff issued by Vietnam Directorate for Standards and Quality allow the decision 3339/2001/QD-BYT promulgated by Vietnam Ministry of Health. Safety apply for handling process. No healthy damage infected.
Caution: This product information is based on FILLPLAS ‘s general experience and does not constitute a specification. Since many factors affect the use of our products. But no warranty is given or implied with respect to this information or patent infringement. We do not accept liability for any loss or damage arising from the use of this information. All sales are subject to our Standard Terms and Conditions of Sale.