Blown film is a widely used plastic manufacturing process in which polymers are extruded into tubular preforms and then inflated with high-pressure air under controlled melt flow conditions. Once cooled and set,...

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Introduction Polyester inherently possesses a certain degree of natural whiteness. However, to meet modern market demands for brighter, purer, and tone-specific whites, it must be treated with fluorescent...

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Introduction In the world of color and materials science, fluorescent brighteners—also known as optical brightening agents (OBAs)—play a crucial role in creating the clean, bright white tones consumers...

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What Is the Synergistic Effect of Optical Brighteners? The synergistic effect of optical brighteners refers to the enhanced whitening performance achieved when two or more brighteners are combined. When...

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In recent years, China’s production and research of fluorescent brightener for polymers have developed rapidly. Currently, eight major varieties are in commercial production. These brighteners mainly fall into three structural categories:

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The dosage of Fluorescent Whitening Agents (FWAs) or Optical Brighteners (OBAs) in polymers is a crucial factor that determines the final whitening and brightening performance. The correct amount ensures optimal whiteness, transparency,...

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Fluorescent brighteners (optical brighteners) play a crucial role in improving the whiteness and brightness of polymer-based products such as plastics and synthetic fibers. These additives work by converting invisible ultraviolet (UV) light...

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The performance of optical brightener (OBA) plays a vital role in achieving bright, clean, and high-quality textile finishes. However, even the best-performing brightener cannot deliver optimal results if it is not applied...

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Coumarin optical brighteners are the third largest class of optical brighteners. The chemical structure of coumarin is shown below.

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What Are Fluorescent Whitening Agents? Fluorescent whitening agents (FWAs), also called optical brighteners or fluorescent brighteners, are colorless fluorescent dyes that absorb ultraviolet (UV) light and emit visible...

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