What Fields Are Fluorescent Brighteners Used?

Fluorescent whitening agents have been used for more than 75 years. From the initial application of textiles, to now widely used in paper, detergents, textiles, plastics, coatings, ink, leather, anti-counterfeiting, laser detection and other fields, and even applied to biomedicine, and its application field is still expanding, closely related to our production and life.

Papermaking whiteness is an important technical index of paper products, and the whiteness of the pulp produced by paper products is obtained by chemical bleaching in the pulping process. For some paper products, it is sometimes necessary to add an appropriate amount of fluorescent whitening agent to improve the visual whiteness. Fluorescent whitening agent is a kind of functional auxiliaries in the production of paper products, which can increase the visual whiteness of paper products by more than 10% on the basis of chemical bleaching without causing chemical loss of pulp.

Adding a certain variety and appropriate amount of fluorescent whitening agent to the detergent can not only improve the appearance of the detergent, but also increase the whiteness or brightness of the washing fabric, improve the washing effect, make the white fabric white and bright, and make the pale fabric bright and bright. Therefore, fluorescent whitening agent has become one of the important additives in the formulation of textile detergent.

Textile industry is the earliest application of fluorescent whitening agents in the field, natural fiber, synthetic fiber fabrics after bleaching, refining, still with a slight yellow. The fluorescent whitening agent can absorb ultraviolet light and emit blue-purple fluorescence and yellow, so as to make the fabric whitened. At the same time, it can be used to increase the brightness of the fabric and make the light-colored fabric more colorful.

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