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Visico™ LE4423 / Visico™ LE4438

Technical Datasheet | Supplied by Borealis

Visico™ LE4423 / Visico™ LE4438 by Borealis is low density polyethylene (LDPE) grade copolymerized with crosslinkable vinyl silane. Contains an antioxidant, scorch retardant additive and metal deactivator. Visico™ LE4423 (base material) in combination with Visico™ LE4438 (catalyst masterbatch) provides smooth glossy appearance and thermo-oxidative stability. Shows excellent storage stability and no volatiles. Designed for processing by PVC/PE extrusion. Visico™ LE4423 / Visico™ LE4438 is recommended for insulation of low voltage control- and power cables up to 6 kV.

Visico™ LE4423 / Visico™ LE4438 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Environmental Stress Cracking Resistance (ESCR)

< 96 hr

(50°C, Igepal 10%, F20)

IEC 60811-4-1/B

Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)

1.0 g/10min

(190°C, 2.16 kg)

ISO 1133

Hot Set Test

60 %

(200°C, 0.20 MPa, Elongation under load)

IEC 60811-2-1

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™ LE4423 / Visico™ LE4438

Visico™ LE4423 / Visico™ LE4438 Properties

Physical Properties

Visico™ LE4423 / Visico™ LE4438 Processing Guidelines

Extrusion Properties