Tetrasulfonated Optical Whitening Agent is a liquid fluorescent whitening agent used in papermaking.
Fluorescent Brightener BA-L has a much better whitening effect than VBL at pH 6-8. Belonging to the anionic type, it can be used in one bath with anionic or nonionic surfactants. This product has excellent stability in high and low-temperature storage.
The following is about AKD Neutral Sizing Agent,i hope to help you better understand it.
Retention and Drainage Aid is a low viscosity, high concentration, water dispersing polyacrylamide emulsion. Retention And Filtration is widely used in a variety of papers such as corrugated paper, cardboard paper, whiteboard paper, culture paper, newsprint, film-coated base paper, etc.