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OBAs |
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Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs) or fluorescent whitening agents (FWAs) are dyes 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). 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 yarn and fabric, causing a perceived "whitening" effect, making materials look less yellow by increasing the overall amount of blue light reflected.
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Advabright ABS |
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| By :Abd-e-Ali | Visits: 8677 |
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| Chemical Name: N/A |
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Chemical Family: Stilbene-disulfonic derivative |
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Product Use: Fluorescent whitening agent for Cellulose, Polyester/cellulose blends |
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