IrgaCycle™ XT 034 DD is an additive composition of stabilizers designed improve processing of highly contaminated recyclates.

This product is tailored for post-consumer and post-industrial polyolefin recyclates, which contain high amounts of incompatible contaminants. It is also well suited for PP/EPDM regrinds contaminated with paint residues (e.g. TPO bumper scrap) or Polycarbonate (PC)/polyester blends contaminated with paint residues (e.g. PC/PBT bumper scrap).

Addresses the following recycling challenges:

• Depleted initial stabilizer packages
• Presence of pre-oxidized polymer chains and low molecular weight oxidation products
• Incompatibility issued caused by paint, ink, and adhesive residues, high filler and pigment loadings, etc.
• Contamination with prooxidative species like metal ions
• Insufficient shelf life

Depending on the residual stabilizer content, quality, and oxidation state of the recyclate material, IrgaCycle™ XT 034 DD is recommended in quantities from 0.5 to 2.0 %.

Features & Benefits

• Neutralizes residual paint particles, fillers, and carbon black to enable better processability and reduce undesired side reactions
• Provides stable melt flow properties, enhanced long-term thermal stability for improved mechanical properties
• Upgrades recyclates from automotive applications for reintegration into initial applications
• Easy to handle product form allows easy doasing at various processing steps
• Enhances processing and long-term stability of strongly contaminated recycled HDPE and PP fractions (source: highly filled, pigments, and coated materials such as automotive bumpers)

Performance Data

Inactive and Compatibilize Problematic Impurities

Processing stability

• rPP/EPDM (car bumper with paint residues)
• Post-consumer
• Multi-pass extrusion at 260°C
• Melt Flow Rate (MFR) measured after 1, 3, and 5 extrusions

IrgaCycle™ XT 034 DD enhances processability and process stability of contaminated rPP/EPDM. 

IrgaCycle™ XT 034 DD stabilizes better during process than conventional solution.

Inactive and Compatibilize Problematic Impurities

Long-term stability

• rPP/EPDM (car bumper with paint residue)
• Post-consumer
• 2 mm injection molded plaques
• Oven aging at 135°C
• Comparison of tensile impact strength over time

IrgaCycle™ XT 034 DD enhances mechanical properties of contaminated rPP/EPDM. 

IrgaCycle™ XT 034 DD significantly enhances mechanical properties over time.