Polyolefin additives and compounds | materials round-up Repsol develops new XLPE grades


Repsol is developing a new range of silane cross-linkable polyethylene (XLPE) grades for low-voltage cable applications. They will be commer- cially available by the end of 2014. The new grades are designed to


Repsol is targeting low-voltage cable applications with its new XLPE compounds


Modifier improves WPCs


BYK has developed a new and improved modifier for polyethylene-based wood-plastics composites (WPCs). The Scona TSPE 2102 GAHD coupling agent is based on HDPE for improved performance. The scientists working


on the new additive aimed to overcome the problem that existing coupling agents based on LLDPE are difficult to mix with the HDPE grades used in many WPC formulations. By basing the new Scona


product on HDPE, compat- ibility is improved, which facilitates easy processing even with low shear rates. The increased functionality of the additive means that it can be used at lower dosage levels, plus the mechanical properties of the end product are said to be significantly improved. ❙ www.byk.com


www.compoundingworld.com


offer very high electrical insulation properties combined with high temperature and abrasion resistance. Repsol says that they are easy-to- implement, cost-effective and reliable. The XLPE compounds do not require any special processing equipment and


can be used on standard extrusion or injection moulding machines. Target cable applications are in the


power distribution, telecommunica- tions, transportation and appliance industries. Due to their increased thermal and mechanical stability, silane cross-linkable PE compounds can also be used in other applications requiring high working temperatures and improved chemical resistance, such as hot water pipes. ❙ www.repsol.com/quimica


Antiblocking talc has clear benefits


Imerys Talc has introduced Mistroblock, a new antiblocking additive based on very bright micro-lamellar talc. It is designed to reduce the blocking force and coefficient of friction in polyethylene film production, while providing optimized optical film properties such as clarity and haze.


The additive is also said to


enhance the mechanical properties of film, including tensile strength and dart drop resistance. In addition, the Mistroblock talc has very low abrasion, helping to protect processing machinery. It is available in compacted form for easy handling and it is


suitable for use in one-pack powder blends or for master- batch production. In addition, it is approved for food contact applications, without limitation. According to Imerys Talc,


Mistroblock is also effective for films produced using biopoly- mer film resins. ❙ www.imerystalc.com


Antifogs boost performance levels


AkzoNobel has recently launched its new Armofog 151 antifog additive for food packaging and agricultural films. It is claimed to improve the hot and cold fog perfor- mance of polyethylene and EVA. In addition to offering


Armofog 151 in additive form, AkzoNobel is also launching its Armofog 151-XE35 masterbatch, which incorpo- rates a 35% loading of the new product. The free-flowing granular product is designed for easy handling. Armofog 151 is mixture of mono- and diglycerides of fatty acids. The masterbatch


AkzoNobel’s antifog additives can be used in food packaging to enhance product appeal


version uses an EVA carrier material. Antifog additives reduce the


formation of droplets of water on plastic films. In food packaging applications, they


enhance product appeal and shelf life. In agricultural films, they can improve crop growth and yields by reducing fog that can limit light transmission. ❙ www.akzonobel.com


February 2014 | COMPOUNDING WORLD 51


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