Carrier compatibility
Hindered phenol plus phosphite — melt stability across repeated extrusion passes.
Typical values for the standard version. Tolerances and test methods are listed in the TDS.
For compounders and converters who regrind. The phenol/phosphite ratio is tuned so the phosphite handles the peroxide decomposition during melting and the phenol carries the long-term protection.
| System | Hindered phenol + phosphite |
| Ratio | 1 : 1 – 1 : 2 |
| Typical dose | 1 – 2 % (masterbatch) |
| YI after 5 passes | ΔYI < 3 |
| Carrier | PP / PE |
| Shelf life | 12 months |
Typical values, for reference only — not a specification and not part of any contract. What binds us is the specification confirmed in writing on your order, and where a sample has been approved, that sample governs. Send us your resin, process and target value and we will confirm the exact figure before you set a production parameter.
Common to every grade we make. Where a grade differs — active content, carrier, colour — the difference is stated on its own data sheet.
| Appearance | Free-flowing pellets |
| Active content | 15 – 30 % (grade dependent) |
| Moisture | ≤ 0.10 % |
| Volatiles | ≤ 0.30 % |
| Agglomerates | ≤ 3 per 1,000 g |
| Heat stability | Grade dependent — see grade data sheet |
| Bulk density | 0.55 – 0.75 g/cm³ |
| Packing | 20 kg PE bag · 25 kg on selected grades |
| Shelf life | 12 months, sealed and dry |
The table above describes the grade family. The figures for your lot are on the COA that travels with it, and the release value is measured on that batch.
If your part is not listed, send a drawing or a photo — we have probably run something close.
Keeps MFI and colour after five passes.
Long-term thermal stability in service.
Protects the carrier during high-load dispersion.
Grade documents are issued per grade and travel with the lot. ISO 9001 / ISO 14001 are held by our production site, not by the grade.
FOB Ningbo to any port. We can book the vessel and handle the documents if you prefer.
No. 1–2 % is the masterbatch dose; the active package inside is roughly a tenth of that. Dosing on the pellet is what we quote, because that is what your feeder measures.
No. We do not hold food-contact certification for this grade. It is supplied for industrial applications only.
Tell us the resin, the process and the target performance. You get a grade recommendation, a landed cost to your port and a sample plan.