The most popular OBA for plastics: Oribrite OB-1

Oribrite OB-1 (CAS 1533-45-5) Fluorescent brightening agent 393

  1. FBA 393 (OBA 393) has excellent thermal stability, high temperature resistance of 375-400 ℃. It is the best heat-resistant variety among all whitening agents. Therefore, it can be used for general high polymers, especially for high melting point engineering plastics such as polysulfone resins.
  2. The whiteness of FBA 393 is also relatively high, in general, the usage amount is 25-300mg/kg.
  3. Very Good compatibility with other additives in plastics.
  4. OBA 393 has extremely low toxicity and can be used for whitening plastic products for food packaging after strict control.
  5. FBA 393 is mainly used for brightening polyester resin and polyester fiber. It can also be used for whitening nylon, ABS, EVA, rigid PVC, polycarbonate, etc.
  6. Oribrite OB-1 has low price with high performance.
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