Fluorescent Whitening Agent ER in refined powder form (FBA 199)
Properties: Fluorescent Whitening Agent ER, also called whitening agent for polyester, is one of the bisdiphenylethelene compounds and similar to Blankophor ER made in Bayer A.G., Germany. ER has an appearance of yellowish green powdered cry stale with a purity equal to or higher than 99% and a melting point of 229 to 231℃. It is non-toxic, odorless, nonionic and soluble in most of organic solvents. Products whitened by ER have a natural pure white appearance. Being stable in chemical properties and characterized by strong high temperature resistance and photo stability, ER is one of the most ideal whitening agents generally accepted internationally for polyester fiber.
Applications: Fluorescent Whitening Agent ER in the form of refined powder is very suitable for whitening and brightening polyester fiber and has good whitening effect on plastics such as PE, PP and PVC and their products. Products can be remarkably upgraded by adding ER refined powder in the process of shaping with polyester chips or recovered polyester chips. In addition, the refined powder is widely used in coating industry.
Directions form use and dosage: Put Fluorescent Whitening Agent ER in the form of refined powder, the polyester chips and other auxiliaries together into the mixer. The dosage of 0.02~0.08% on weight of polyester is recommended and should be determined according to the requirement for the whiteness of the finished products. Mix the mixture thoroughly at 50~150℃ and then keep it at 240~300℃ for drawing-spinning.
Specifications:
Item |
Indices |
Appearance |
yellowish-green powdered crystal |
Purity |
≥99% |
Melting point |
229~231℃ |
Packing and storing: Packaged in cardboard barrels, 20kg or 25kg each. Stored in cool and ventilated place.
|
