Brighteners are widely used in the production of textiles, papermaking, washing powder, soap, rubber, plastics, pigments and paints. Brighteners, also called optical brighteners and fluorescent brighteners, are organic compounds that can improve the whiteness of fiber fabrics and paper.

Many friends may have seen the three words brightener in their lives, but it is not too clear what the whitening agent is for. Let's take a look together below.

Use of brighteners

Brighteners are widely used in papermaking, textiles, washing powder and soap industries; brighteners are derivatives of phenylpyrazoline, mainly used in the production of acrylic fiber spinning, textiles and plastic products; 4-A Base-7-dimethylamine coumarin whitening agent is used in products such as wool fabrics, nylon fabrics, soaps and detergents.

Introduction to brighteners

Brighteners, also called optical brighteners and fluorescent brighteners, are organic compounds that can improve the whiteness of fiber fabrics and paper. Brighteners can be classified according to their chemical structure and use. According to the chemical structure, they can be divided into five types: stilbene type, coumarin type, pyrazoline type, benzoxazide type, and phthalimide type; According to the application, it can be divided into fluorescent whitening agent for detergents, fluorescent whitening agent for textiles, fluorescent whitening agent for papermaking, fluorescent whitening agent for plastics and synthetic materials, and fluorescent whitening agent for other purposes.

The main function of the brightener is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescent radiation, which complements the original yellow radiation to become white light, and improves the whiteness of the product under sunlight.