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NEXAMITE® R202: MFR-increasing reactive masterbatch for rPP

Better filling in flow-limited rPP applications

NEXAMITE® R202 is a reactive masterbatch used to increase melt flow rate (MFR) in recycled polypropylene. It targets improved processability particularly in applications where low flow limits mould filling or long flow paths.

Nexam Chemical states that R202 is offered at different activity levels: R202-1 has approximately 5%, R202-2 approximately 10% and R202-4 approximately 20% peroxide activity. The appropriate grade and addition level must be selected through technical assessment.

Product identity

PolymerRecycled PP (rPP)
FunctionMFR increase and flow improvement
ManufacturerNexam Chemical AB
DistributorNEXChem Türkiye

Key benefits

  • Helps efficiently increase MFR in recycled PP.
  • Supports improved mould filling and flow length.
  • Helps deliver more stable processing conditions in demanding geometries.
  • Can reduce the need for virgin PP to adjust flow.
  • Offers selection against process targets through different activity options.

Typical applications

  • Flow-limited rPP injection moulding
  • Parts requiring long flow paths or complex geometry
  • MFR adjustment in recycled PP feedstock

Technical assessment note

Do not present the peroxide activity percentages as ‘product dosage’. These are the activity levels of the R202 variants. Grade selection must be validated together with starting/target MFR, temperature–time history, final mechanical properties and odour/colour requirements.

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

What does R202 do?
It helps improve flow and processability by increasing MFR in recycled PP.
Which variants exist?
Nexam Chemical lists R202-1 at approximately 5%, R202-2 at approximately 10% and R202-4 at approximately 20% peroxide activity.
Does it have the same function as R403?
No. R202 increases MFR; NexCircle® R403 reduces MFR and increases melt strength.
Does it fully eliminate the need for virgin PP?
Nexam states that it can reduce the need for virgin PP to adjust flow. The final formulation is validated against the application specification.

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

Request a technical assessment

Let’s turn the flow problem into data. Share your starting MFR, target MFR, process and part geometry, and we will start technical work on the right R202 activity level.

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