Borstar LE8707 is a black linear low density (LLD) jacketing compound, which is produced with the Borealis proprietary Borstar bimodal process technology.

Borstar LE8707 contains 2.6% well-dispersed carbon black in order to ensure excellent weathering resistance.

Borstar technology allows the manufacturing of polymers outside the traditional MFR and density range making it possible to optimize processability, reduce shrinkage and yet provide excellent physical toughness and environmental stress crack resistance (ESCR).

Applications
Borstar LE8707 is designed for jacketing of energy and communication cables.

The abrasion resistance combined with low coefficient of friction makes it ideally suitable for the jacketing of energy and communication cables. Borstar LE8707 offers a balance of properties giving advantages in manufacturing, installation and lifetime performance of communication and energy cables.

Specifications
Borstar LE8707 meets the applicable requirements as below when processed using sound extrusion practice and testing procedure:

• ASTM D 1248 Type I, Class C, Category 4, Grade E4, E5, J3, W2-4

• ISO 1872-PE, KCHL, 23-D012

The following cable material standards are met by Borstar LE8707:

• EN 50290-2-24

• DMP 5, 7-10, 12, 14, 15, 17

Cables manufactured with Borstar LE8707 using sound extrusion practice normally comply with the following cable product standards:

• IEC 60708

• IEC 60794

• IEC 60502, Part 2, Type ST3, ST7

• IEC 60840, Type ST3

• IEC 60840, Type ST7

• HD 632 S2, ST3, ST7

• EN 50407

• EN 187105

• HD 603 S1, DMP 5, 7, 8

• HD 620 S2, DMP 9, 10, 12, 14, 15, 17

• UL 1072 Oil resistance I & II

Special Features
Borstar LE8707 consists of specially selected components to offer:

• Superior processability

• Excellent environmental stress cracking resistance (ESCR)

• Rather low heat deformation

• Low coefficient of friction

• Low water permeability

• Good petroleum-jelly resistance

• Outstanding UV resistance

• Low shrinkage