MITSUI Hi-WAX™(Polyethylene Wax)

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MITSUI HI-WAX™ is a polyethylene wax with various grades in Polymerization type, Modified type and Thermally Cracking type. The wax can be used as a slip agent, dispersant, resin modifier, and mold release agent due to its molecular structure, which enables it to outperform natural waxes.

Structure of MITSUI HI-WAX™

The performance characteristics and properties of the synthetic wax, include:

  • Solid or semisolid matter at room temperature
  • Low melting point, melted at room temperature~150℃.
  • Crystalline low molecular resin
  • Molecular weight : 300~10,000 (low molecular)

Range of Properties

Melting Point of MITSUI HI-WAX™ vs. Natural Wax

This synthetic wax is made from a low molecular weight polypropylene outperforms natural wax such as animal, plant or mineral wax, due to its heat resistance, melting point and molecular structure.


The various grades of HI-WAX™ are used for a broad range of applications, such as slip agents, dispersants, resin modifiers, and mold release agents for the molding of various synthetic resins.

Mold release agent for the molding of plastics

The polyethylene wax can be used as a Mold release agent for plastics due to its releasability which increases productivity, prevents pollution and enables the molding of complex shapes.

 HI-WAX™ as Mold release agent for the molding of plastics

Modifier for engineering plastics

It is used as a modifier for engineered plastics due to its impact strength and flexural modulus properties. With the use of HI-WAX™, manufacturers realize cost reduction due to thin materials.

HI-WAX™ as modifier for engineering plastics

Engineering plastics with HI-WAX™

Release agent for rubbers

HI-WAX™ can also be used as a release agent for rubbers due to its releasability and stability.

HI-WAX™ as release agent for rubber