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| Chemical name： |
2,5-di(5-tertiary
buty1,2-benzo-xoazoly1)thiophene |
2,5-di(5-tertiary
buty1,2-benzo-xoazoly1)thiophene |
| Molecular Formula： |
C26H26N2OO2S |
C26H26N2OO2S |
| Molecular amount： |
430 |
430 |
| Appearance： |
Light yellowish
or milky white powder |
Light yellowish
or milky white powder |
| Melting point： |
198℃-200℃ |
198℃-200℃ |
| The largest UV absorption wavelength： |
375nm |
375nm |
| Solubility： |
difficult to dissolve in water, soluble in paraffin, fat, mineral oil, wax and the common organic solvents. |
| Purpose： |
Fluorescent whitener OB can be used to whiten polymer at various stages of processing. It’s the efficient fluorescent whitener of polymer matrixes such as engineering plastics PE, PC, PA and acrylic, thermoplastic PU, PVC, styrene monomer and copolymer, PO, adhesive and other organic matrixes.
Major uses include fibers, molding products, films and sheets. Other purposes do not contain paints, coatings, printing inks and synthetic leather
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| Features / advantages： |
Fluorescent whitener OB has excellent heat resistance and unique whitening property. It’s also fire-resistant and lowly volatile. Its color is dazzling blue. Soluble in organic solvents, it has a good affinity to all kinds of matrixes, therefore improves the whiteness of the matrixes. When combined with the dye, products will have particularly bright colors. Excellent heat resistance makes OB applicable to all stages of processing and applicable to packaging industry. |
| Amount： |
0.01%-0.05% |
0.01%-0.05% |
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