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NexCircle® R403: MFR reduction and melt strength for rPP

Control your rPP flow to match the target process

NexCircle® R403 is a next-generation reactive masterbatch designed to efficiently reduce melt flow rate (MFR) and increase melt strength in recycled polypropylene.

The product supports adapting variable or lower-quality rPP feedstock to target process requirements. Nexam Chemical highlights that colour and the existing additive system are not adversely affected, and notes compatibilization potential in rPP streams contaminated with rPE.

Product identity

PolymerRecycled PP (rPP)
FunctionMFR reduction and melt strength increase
ManufacturerNexam Chemical AB
DistributorNEXChem Türkiye

Key benefits

  • Helps efficiently reduce MFR in rPP streams.
  • Improves melt strength and processability.
  • Supports the use of lower-quality or mixed recycled feedstock.
  • Positioned to work without adversely affecting colour or existing additives.
  • Can help compatibilize rPP streams contaminated with rPE.
  • Designed for higher efficiency than previous-generation solutions.

Typical applications

  • rPP injection moulding requiring controlled flow
  • rPP extrusion processes
  • rPP streams with variable MFR or PE contamination

Technical assessment note

R403 reduces MFR; R202 increases it. These opposite functions must be clearly separated on product cards and in selector content. The product sits under the NexCircle® brand and must be written as NexCircle® R403 everywhere. No numerical target MFR or dosage claim should be published without a current TDS and trial data.

Related applications

MFR control in recycled PPThe flow behaviour of rPP feedstock rarely arrives ready for the target process. There are two opposite direct…

Frequently asked questions

Does R403 increase MFR?
No. Nexam Chemical describes R403 as a solution for reducing MFR and increasing melt strength in rPP.
Under which brand is it offered?
Under the NexCircle® brand, as NexCircle® R403. The brand spelling must be identical across all channels.
Does it help with PE contamination?
Nexam states that it can compatibilize rPP contaminated with rPE; contamination level and performance must be confirmed by technical trial.
How does it differ from R202?
R403 reduces MFR; NEXAMITE® R202 is used to increase MFR in rPP.

The technical statements on this page are based on the manufacturer’s current public product information. Dosage, temperature and performance targets are defined per line through technical trial.

Sources: Nexam — recycled PP solutions

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