by SpecialChem

Visico™ LE4421 / Visico™ LE4438

Technical Datasheet | Supplied by Borealis

Visico™ LE4421 / Visico™ LE4438 by Borealis is an environment friendly, low density polyethylene (LDPE) grade copolymerized with crosslinkable vinyl silane. Visico™ LE4421 (base material) in combination with Visico™ LE4438 (highly active catalyst masterbatch) accelerates moisture induced crosslinking reaction at ambient conditions, in sauna or in hot water. Contains antioxidant, scorch retardant additive, metal deactivator and a drying agent. Offers excellent processability, storage stability, outstanding curing rates, excellent surface finish and no volatiles. Exhibits insulation with excellent thermo-oxidative stability in contact with copper- & aluminium, smooth glossy appearance, no or little die drool and it is designed for processing by PVC/PE extrusion. Visico™ LE4421 / Visico™ LE4438 is recommended for insulation of low voltage cables for the range up to 6 kV.

Visico™ LE4421 / Visico™ LE4438 Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Hardness, Shore D

(1 s)

ISO 868

Tensile Strain

> 300 %

(at Break, 250mm/min)

ISO 527

Tensile Strength

> 15 MPa

(250mm/min)

ISO 527

Extrusion Properties

Value & Unit

Test Condition

Test Method

Barrel 1 Temperature

150 °C

Barrel 2 Temperature

170 °C

Barrel 3 Temperature

170 °C

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Visico™ LE4421 / Visico™ LE4438

Visico™ LE4421 / Visico™ LE4438 Properties

Mechanical Properties

Visico™ LE4421 / Visico™ LE4438 Processing Guidelines

Extrusion Properties