Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Addivant WESTON 430 Antioxidant

Addivant WESTON 430 Antioxidant is a high-performance hindered phenolic antioxidant from Addivant’s WESTON series, designed for polyolefins and elastomers. It offers exceptional thermal stability, low volatility, and synergistic performance with phosphites. Widely used in PP, PE, and TPO applications, it ensures long-term polymer protection during processing and end-use.
  • addivant weston 430 antioxidant_3c7a1f22
  • addivant weston 430 antioxidant_3c7a1f22

Features Of Addivant WESTON 430 Antioxidant

  1. High-performance hindered phenolic antioxidant offering exceptional thermal and oxidative stability.

  2. Low volatility and excellent compatibility with polyolefins, styrenics, and engineering thermoplastics.

  3. Effective at low dosage levels (typically 0.1–0.5 wt%), delivering cost-efficient stabilization.

  4. Non-staining and non-discoloring—ideal for applications requiring color retention and clarity.

  5. Meets FDA 21 CFR §178.2010 for use in food-contact polymers (subject to compliance with applicable limits).

Typical Applications Of Addivant WESTON 430 Antioxidant

  1. Polypropylene (PP) fibers, films, and injection-molded parts.

  2. High-density polyethylene (HDPE) and low-density polyethylene (LDPE) packaging materials.

  3. Styrenic resins including ABS and HIPS for durable consumer goods.

  4. Engineering plastics such as polybutylene terephthalate (PBT) and polyethylene terephthalate (PET).

  5. Recycled polymer streams requiring robust melt stabilization during reprocessing.

Specifications Of Addivant WESTON 430 Antioxidant

Chemical TypeHindered phenol (2,6-di-tert-butyl-4-(octylthio)methylphenol)
Product FormPellets
AppearanceOff-white to light tan cylindrical pellets
Melting Point48–52 °C
Assay (by GC)≥98.0%
Volatile Matter (105 °C, 2 h)≤0.5%
Heavy Metals (as Pb)≤10 ppm
Primary ApplicationsOxidative stabilization of thermoplastics during processing and end-use


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