AO-B215 is a compound antioxidant made by blending AO-1010 (BHT) and AO-168 (Dilauryl Thiodipropionate) in a fixed ratio.
This ready-to-use blend provides dual-function protection:
It is a preformulated antioxidant system that simplifies formulation and improves stability for polyolefins and other thermoplastics.
| Property | Typical Value |
|---|---|
| Composition Ratio | AO-1010:BHT (30%) + AO-168:DLTP (70%) |
| Form | White or light yellow powder |
| Melting Point | 45 – 60 °C |
| Solubility | Good in PE, PP, EVA |
| Recommended Dosage | 0.2 – 0.8 phr |
| Volatility | < 0.3% at 150 °C |
| Concern | AO-B215 Advantage |
|---|---|
| Complicated antioxidant blend | One-pack easy formula |
| Processing oxidation | BHT handles early-stage radical formation |
| Heat aging failure | DLTP protects for long-term use |
| Cost & efficiency | Better value than separate AO blends |
Q1: Can AO-B215 replace AO-1010 and AO-168 fully?
Yes. It is designed to combine both functions and often used as a drop-in solution.
Q2: What polymer types are most suitable?
PP, PE, EVA, PU, and most general-purpose plastics.
Q3: Can I use it in masterbatch?
Yes. AO-B215 disperses well and is suitable for pre-mix systems.
Q4: How is it stored?
Store in dry, cool place, in original sealed packaging.
Q5: Does it affect transparency or color?
Minimal impact. Suitable for lightly colored or filled products.
