Dyestuff industry experts

Disperse TXF Series

Home » News


If you want to know more about the OBA, the following articles will give you some help. These news is the latest market situation, trend in development, or related tips of the OBA industry. More news about OBA, are being released. Follow us / contact us for more OBA information!
  • Principle of fluorescence whitening agent


    In the textile industry, the whiteness of the fiber itself often does not meet people's aesthetic requirements. Especially natural fibers, because the growth environment is different from the growth cycle, its whiteness difference is very different. White substances are generally absorbed slightly i Read More

  • What is a fluorescent whitening agent?


    British physicist George Gabrielstokes first expounded the fluorescent phenomenon in 1852. In 1929, KRAIS.P first discovered that 6,7-dihydroxybolic beanins had fluorescent whitening effects; in 1940, German IG company developed a fluorescent whitening agent with practical value and began its commer Read More

  • What are the factors that affect the fluorescence intensity of OBA


    1. The influence of solvent The absorption spectrum characteristics of optical brighteners are closely related to the solvent used. The position and intensity of the fluorescence spectrum of the same optical brightener in different solvents may be significantly different. Therefore, to determine the Read More

  • Classification of optical brighteners


    According to chemical structure, it can be divided into five categories: 1. Stilbene type, used in cotton fiber and some synthetic fibers, papermaking, soap making and other industries, with blue fluorescence;2. Coumarin type, with the basic structure of coumarone, used in celluloid, PVC, etc., with Read More

  • How to detect fluorescent brighteners in cosmetics?


    When it comes to the detection of fluorescent whitening agents, the first thing everyone thinks of is to use a currency detector to irradiate it, which is the ultraviolet lamp method. Since the principle of the fluorescent whitening agent is that the blue light excited by the ultraviolet light neutr Read More

  • What is optical brightener?


    Let us first understand the fluorescent brightener. It is a type of fluorescent dye, which belongs to a separate category in the Colour Index (C.I.). The molecular structure of fluorescent whitening agent is mainly composed of a continuous conjugated system containing an aromatic ring and one or mor Read More




copyright 2020 ©  Hangzhou Tiankun Chem Co.,Ltd 杭州天昆化工有限公司