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BASCO® P0029/04-PP Melt Flow Rate Modifier

The production of polypropylene goods, especially thin-walled and fiber items, requires a polymer with high melt flow rate. Unfortunately, polypropylene grades with a high MFR are not always available for a number of reasons. In these cases, the issue is to increase the MFR of PP grades that are available.

Scientific and Production Company BARS-2 manufactures a range of melt flow rate modifiers to control MFR while production of disposable PP products. The best solution today is to use BASCO® P0029/04-PP masterbatch. It allows the producer to regulate polymer rheology during processing and control its flow properties.

The masterbatch contains 7.5% of organic peroxide, which causes controlled degradation of macromolecules and thereby increases the flow properties of polypropylene. BASCO® P0029/04-PP masterbatch is supplied as standard pellets of 2 to 5 mm in size; has good processability and easy to use. The bulk density of the masterbatch is 450-500 kg/m³.

Performance tests of BASCO® P0029/04-PP MFR modifier on a laboratory extrusion line revealed the following:

BASCO® P0029/04-PP masterbatch is recommended for single use products, as peroxide reduces the long-term thermal stability of polypropylene.

The masterbatch has a characteristic odor as it contains an active chemical reagent (organic peroxide), which reacts with PP during processing. Any odor remaining in the product means that there is unreacted peroxide left in the polymer so the dosing of masterbatch should be decreased or the processing temperature should be increased. If the product is being colored at the same time, a slight decrease in color saturation is possible.

The masterbatch is effective on homopolymer as well as block and random copolymers, although the end result may differ.

DO NOT mix P0029/04-PP masterbatch with all types of polyethylene and its copolymers (LDPE, HDPE, LLDPE, EVA, etc.). In this case, instead of controlled degradation, the cross-linking of polyethylene will occur, the melt will lose its flow properties completely, which will lead to a high risk of screw seizure and equipment failure!

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