A stabilizer and co-additive for improved processing and long-term thermal stabilization of recycled, flexible polyolefin applications. Increases content of recycled polymers in polyolefin film applications.
IrgaCycle PS 031 G
$0.00
Product Category: Re-Stabilization Polyolefin RecyclingSupplier: BASF EVP
IrgaCycle™ PS 031 G is a stabilizer and co-additive to increase the content of recycled polymers in polyolefin film applications.
This product is designed specifically for re-stabilization of post-consumer and post-industrial polyolefin-films during re-granulation or conversion steps. The product enhances the processing and long-term stability of the recycled plastics. It is especially suited for recycled LDPE and LLDPE; e.g. recycling streams originating from packaging films, wrap or shrink films, or other flexible packaging forms.
Designed to address:
- Gel formation
- Contamination with prooxidation species (e.g., metal ions)
- Inconsistent processing behavior
- Depleted initial stabilizer packages
- Presence of pre-oxidized polymer chains and low molecular weight oxidation products
- Insufficient shelf life of recyclate
Depending on the residual stabilizer content, quality, and oxidation state of the recyclate material, IrgaCycle PS 031 G is recommended in quantities from 0.1 to 0.5%.
Features and Benefits:
- Improves film processing properties and maintains mechanical properties
- Help reducing gel formation
- Maintain melt flow during melt processing
- Rejuvenates depleted initial stabilizer packages in the polymer
Performance Data:
Improved Processing of Film Grade rLDPE
Processing stability
- Post-consumer
- Multi-pass, single screw extrusion at 220°C
- Melt Flow Rate (MFR) measured after 1, 3, and 5 extrusions
rLDPE shows signs of cross-linking and potential gel formation with reduced MFR. IrgaCycle™ PS 031 G efficiently stabilizes film processing with no indication of cross-linking.
Improved Durability of rLDPE Films
Long-term stability
- Post-consumer
- Blown films, 30 µm
- Tensile strength and elongation at break improved with use of stabilizer
IrgaCycle™ PS 031 G improves mechanical properties of blown rLDPE films
Stable Melt Processing of rLDPE
Processing stability
- rLDPE, extrusion grade
- Post-consumer
- Multi-pass extrusion at 220°C
- Melt Flow Rate (MFR) measured after 1, 3, and 5 extrusions
rLDPE demonstrates erratic MFR, first cross-linking (MDR decrease), followed by chain scission (MFR increase). IrgaCycle™ PS 031 G stabilizes processing, mitigates cross-linking and gel formulation.
IrgaCycle™ PS 031 G mitigates erratic melt flow, recyclate behaves similar to virgin material.
Enhanced Durability of rLDPE
Long-term stability
- rLDPE, extrusion grade
- Post-consumer
- Cast films, 210°C, 50 µm
- Oven aging at 100°C
- Tensile properties 100 mm/min
Tensile properties of recyclate changes significantly upon aging. IrgaCycle™ PS 031 G maintains mechanical properties over whole service life.
Long term stability of recyclates is not sufficient, resulting in mechanical failure over time. IrgaCycle™ PS 031 G upgraded recyclate durability to better match virgin material properties.
