Visico LE4423 / Ambicat LE4476 is a silane crosslinkable natural compound designed for low voltage power cables up to 6 kV.

The base material Visico LE4423 in combination with the catalyst masterbatch Ambicat LE4476 will accelerate the moisture-induced crosslinking reaction. The system is highly active and crosslinks quickly at ambient conditions, in sauna or in hot water.

When properly mixed, addition of 5 parts of Ambicat LE4476 to 95 parts of Visico LE4423 , insulation with excellent thermo-oxidative stability, also in contact with copper as well as aluminium, is achieved. If the insulation is designed to meet the thermo-oxidative ageing demand requiring by IEC 60502 at 150°C in contact with copper, addition of 9 parts Ambicat LE4476 to Visico LE4423 is recommended.

Applications
Visico LE4423 / Ambicat LE4476 is designed for:

• Insulation of low voltage cables for the range up to 6 kV.

Additives
Visico LE4423 / Ambicat LE4476 contains antioxidant, metal deactivator and a drying agent. Visico LE4423 contains a permanent scorch retardant additive, ensuring safe processing and enabling the use of a highly active crosslinking catalyst.

Specifications
Visico LE4423 / Ambicat LE4476 in combination meets the applicable requirements as below when processed using sound extrusion and testing procedure:

• ASTM D 1248 Type I, Class A, Category 4

• IEC 60502-1

• HD 603 S1

• NEMA WC 70

• HD 604 S1

• NEMA WC 71

The standards referred to above is a selection and is not complete coverage of all applicable standards. Contact your Borealis representative for additional information.

Special Features
Visico LE4423 / Ambicat LE4476 consists of specially selected components to offer:

• Excellent storage stability

• Outstanding curing rates

• Excellent processing properties

• No or little die drool

• No volatiles

• No drying prior to extrusion

• Low scorch

• Excellent surface finish

• Environmentally friendly (free from heavy metals)

The base material Visico LE4423 in combination with the catalyst masterbatch Ambicat LE4476 is a ready-made two-component system which crosslinks quickly at ambient conditions, in sauna or in hot water. Visico LE4423 is based upon a cost optimised low density polyethylene, copolymerised with vinyl silane. The catalyst masterbatch, Ambicat LE4476 , contains a novel, patented, environmentally friendly crosslinking catalyst and is completely free from heavy metals.