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NEXAMITE® · Virgin PE

NEXAMITE® A48 / M480502: melt strength enhancer for virgin PE

Controlled long-chain branching in demanding PE processes

NEXAMITE® A48 / M480502 is positioned to improve melt strength, process stability and long-term performance in virgin polyethylene applications. NEXAMITE additives modify polymer structure by creating long-chain branching through a controlled reaction during extrusion.

A48 is supplied in powder form; M480502 is supplied as a masterbatch with an HDPE carrier. Nexam Chemical states that the solution is designed for use without modification to existing processing equipment and without forming volatile by-products.

Product identity

PolymerVirgin PE / HDPE
FormA48 powder; M480502 HDPE-carrier masterbatch
CAS4856-87-5 (Hexamethylene-1,6-di-maleimide)
ManufacturerNexam Chemical AB
DistributorNEXChem Türkiye

Key benefits

  • Helps increase melt strength at low addition levels.
  • Supports reduced sag in thick-wall extrusion.
  • Helps improve dimensional stability and process consistency.
  • Supports mechanical performance, long-term durability and chemical resistance.
  • Can be used in peroxide-free crosslinking systems.
  • Offers format options: A48 powder and HDPE-carrier M480502.

Typical applications

  • PE pipe extrusion
  • Extrusion blow moulding
  • PEX pipe systems
  • Virgin PE applications requiring high melt strength and long-term performance

Technical assessment note

Do not conflate the two contexts of A48 on this page: a performance additive on Nexam’s virgin PE page, and listed as CAS 4856-87-5, Hexamethylene-1,6-di-maleimide on the functional chemicals page. Application form, purity/masterbatch selection and regulatory documentation must be technically verified.

Related applications

Melt strength for virgin PEIn pipe, thick-wall extrusion and PEX systems, melt strength determines both process stability and long-term p…

Frequently asked questions

What is the difference between A48 and M480502?
A48 is powder; M480502 is a masterbatch form with an HDPE carrier.
Which processes is it suitable for?
Nexam Chemical lists pipe extrusion, extrusion blow moulding and PEX pipe systems.
Can it be used on existing equipment?
Nexam states that the structural modification approach can be applied without modification to existing processing equipment; a trial is still required.
What is its chemical identity?
Nexam’s functional chemicals page lists A48 as CAS 4856-87-5, Hexamethylene-1,6-di-maleimide.

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 — virgin PE melt strength · Nexam — functional chemicals

Request a technical assessment

Let’s select the right format for your PE application. Share your polymer grade, process type, sag/stability problem and final performance target, and we will assess the fit of A48 or M480502.

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