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Polymer Additives
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Technical Datasheet | Supplied by Mitsui Chemicals
LUBMER™ L4420 is an ultra-high molecular weight polyethylene (UHMWPE) by Mitsui Chemicals. Used as a tribology modifier of engineering plastics or a replacement for PTFE. Exhibits high mechanical properties, low friction and high processability. Designed for lightweight gears and bearings. It can reduce a squeaking sound with a variety of materials. Improves durability due to high abrasion resistance. It is suitable for processing by injection molding, co-extrusion or insert mold. LUBMER™ L4420 contributes to increased product efficiency and total cost reduction.
Product Type
Other Surface Modifiers
Chemical Composition
Ultra-high Molecular Weight Polyethylene (UHMWPE)
Physical Form
Product Status
Applications/ Recommended for
  • Gears
  • Extrusion > Coextrusion
  • Injection molding - thermoplastics
  • Cost reduction
  • Mechanical/ physical performance > Sound dampening

LUBMER™ L4420 Properties


Value & Unit
Test Condition
Test Method
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
5 g/10 min
(At 190°C. 10kgf)
MCI Method
1030 kg/m3
ASTM D1505

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