Antioxidants help preserve the appearance and physical properties of polymers. Ampacet offers two categories of antioxidants, each with a specific function in polymer stabilization:
Primary antioxidants are used to protect the finished product. This ensures performance over the life of the finished good.
Secondary antioxidants are used as process stabilizers. They protect the polymer during processing, especially when the polymer undergoes multiple heat histories.
Antioxidants are also designed to protect recycled polyolefin (rPE) resins and minimize gel formation and yellowing, protecting the aesthetics and mechanical properties of secondary packaging for higher shelf appeal, allowing higher use of rPE.
Primary/Secondary blends are often used to protect polymers during their entire lifecycle. Antioxidants allow for reduced use of virgin resin, reuse of internal waste, and lifecycles of PCR that undergoes many heat histories.
To avoid pinking or yellowing, proper selection of antioxidants and co-additives is required. Click here for more details.
For more information on Ampacet Antioxidant masterbatches and other R3 Sustainable Solutions, their applications and complete Regulatory Status, please complete the product inquiry form or contact Ampacet or your local Ampacet representative.