Synonyms: fluorescent whitening agent 127, FP, FP-127, CBS-127. Uvitex FP, FP-P, FP-C (Clariant).
Hue/tone: blue/bluish.
Physical and chemical properties: The product is light yellow crystalline powder with a melting point of 216～220°C. The maximum absorption wavelength is 368nm, and the maximum fluorescence emission wavelength is 436nm. Insoluble in water, soluble in most organic solvents such as carbon tetrachloride and dimethylformamide. Chemically stable, with good heat resistance, light resistance and chlorine bleach resistance.
Usage: It is used for whitening various plastic products, especially for polyvinyl chloride and polystyrene, which has better compatibility and whitening effect. The whitening and brightening effect of artificial leather products is particularly ideal, and it has the advantages of long-term storage without yellowing and fading. It can be added to the prepolymer of monomers before or during polymerization, polycondensation or polyaddition, and can also be added in the form of powder or pellets before or during the molding of plastics and synthetic fibers. The thermal stability is greater than 300 ℃, which can meet the temperature requirements of various manufacturing and processing plastics. It can also be used for whitening and brightening paints, inks, wallpaper PVC plastisol etc.
Dosage: PVC white is 0.01%~0.05%, transparent is 0.0001%~0.001%;
polystyrene white is 0.001%~0.05%, transparent is 0.0001%~0.001%;
ABS is 0.01%~0.05%, which can eliminate the inherent yellow in ABS.
Pure whitening for acrylic, polyester, acetate and triacetate. Some varieties contain calcium salts as dispersants or contain softeners.
Application performance: good color fastness to light, moderate color fastness to chlorine and oxygen bleaching.
