Optical brightening agents are additives which are used in the paper industries to enhance whitening effects of papers. These chemical compounds absorb light in the ultraviolet and violet region (usually 340-370nm) and re-emit light in the blue region (typically 420-470 nm). See more The optical brighteners that are used in paper industries can be sort into three types based on the sulfonic groups. All of them contain stilbene structure. See more We know that optical brightening agents are stilbene derivatives. The stilbene is a diphenylethene which consist two stereo-isomer– trans-isomer and cis-isomer. Between these two configurations, the trans-isomer can … See more Normally the consumers expect higher brightness paper and paper boards. But all the time the brightness of pulp and fillers cannot fulfill the targeted brightness. Therefore the … See more All the optical brightening agents are dyestuffs. As like most of the other colorants they also degraded by oxygen in air slowly. So after … See more WebJul 18, 2013 · A reference collection of mostly 20th-century photographic paper was surveyed for the presence of optical brightening agents. Only fiber-based, gelatin silver …
Optical Brightening Agents (OBA) Types & Uses of OBA
WebINX is the only company to manufacture and offer both inks and specialized coatings for commercial and digital printing as well as paper, flexible and rigid packaging. Digital Inks … Web4 III. ADMINISTERING THE TEST Turn the power on by depressing the red power switch. Depress the two eye switches--orange and green, being sure the white switch (day/night) … easy freight ltd
Archroma Introduces Leucophor® MT, A New Cost-Effective Optical …
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