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SpeedBlock OB-184

2,5-bis(5-tert-butyl-2-benzoxazol-2-yl) thiophene
Product overview
SpeedBlock OB-184 is a fluorescent whitening agent, with excellent chemical and thermal stability, for use in ink and coating applications. SpeedBlock OB-184 is used in white and pastel tones where the degree of whiteness of the paint/ink needs intensifying. SpeedBlock OB-184 will mask the yellow self colour of some formulations and will increase the deep tone of blue/black inks. SpeedBlock OB-184 is recommended for use at concentrations between 0.02 - 5.0%. The actual use level chosen depends on the particular application and end user requirements.
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