Additive imparting pure to bluish brightness to polymers and intensifying the degree of whiteness in ready-to-use white pigmented coatings. Its function is based on the fluorescence effect. It absorbs near-ultraviolet radiant flux and re-emits it as violet-blue visible light causing a whiter appearance, especially when added to a yellowish-white material.
A compound that absorbs the invisible ultraviolet component of sunlight and re-emits it as visible light at the blue end of the spectrum.
Substance that makes color appear brighter in the presence of sunlight and ultraviolet light.
1. A colorless compound that when applied to fabric absorbs the ultraviolet radiation in light but emits radiation in the visible spectrum. 2. Fluorescent materials added to polymer in manufactured fiber production that emit light in the visible spectrum usually with a blue cast.
an additive designed to enhance the appearance of colours in fabrics and on papers
Optical whiteners or fluorescent whitening agents used in cleaning process.
A fabric brightening additive.
Optical brighteners, optical brightening agents, fluorescent brightening agents or fluorescent whitening agents (FWAs) are dyes that absorb light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emit light in the blue region. These additives are designed to enhance the appearance of colours in fabrics and on papers. They may also enhance or modify the appearance of white items.