Toppyl PB 8340M
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Polybutene-1 (PB-1) grade Toppyl PB 8340M is a random copolymer of butene-1 with low ethylene content.
In blends with PE polymers, it forms a separate, but well-dispersed phase. Its primary use is as a minority blend
component in the seal layer of easy-opening packaging films, produced by cast film extrusion.
A typical PE blend partner for Toppyl PB 8340M could be any ethylene homo-or copolymer in the melt index
range of 2.0 to 8.0 g/10min.
PB-1 is also highly compatible with polypropylene due to its similar molecular structure, and it can be used to
modify PP sealing behavior or mechanical properties such as impact strength.
PB-1 crystallizes slowly and is very shear sensitive in its flow behavior.
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Technical properties
| Density (g/cm³) | 0.911 ISO 1183 |
| Flow Rate (g/10 min) | 4.0(190°C/2.16 kg) ISO 1133 100(190°C/10.0 kg) ISO 1133 |
| Flame Rating | - |
| Notched Izod Impact Strength (kJ/m²) | - |
| Notched Izod Impact (J/m) | - |
