• ARKEMA

Injection Resins

ARKEMA has launched Rilsan® HT injection resins for extrusion, the first flexible high-temperature thermoplastic to replace metal in high-temperature applications. The Rilsan HT is now the first complete polyphtalamide (PPA)-based product line suitable for all process technologies, ranging from extrusion to blown or injection moulding. Rilsan HT resins are up to 70% bio-based and match the increasing environmental commitment of many industries. PPA-based injection resins in automotive applications have increasingly replaced metal parts as a way to optimise costs, reduce emissions and weight, improve fuel economy and extend car life. Until now, PPA based injection resins were more difficult and costly to process when compared to aliphatic high performance polyamides. Rilsan HT is the only PPA-based injection resin that offers processing characteristics similar to those of aliphatic high-performance polyamides. With mould temperatures close to those of PA12 and PA11, Rilsan HT can be easily processed on standard injection-moulding equipment using conventional water cooled temperature control. Moreover, Rilsan® HT can be processed in injection moulds designed for PA12 and PA11 thanks to similar mold shrinkage properties. It delivers a designer-friendly balance of toughness, strength and elongation and reduces the risk of failures that can occur with brittle plastics, such as conventional PPA-based injection materials or PPS. The picture shows quick-connectors made of Rilsan HT. The injection grades – glass-fibre reinforced or formulated for conductivity – are ideally suited for metal replacement in fuel system applications requiring low permeation, low swelling and high thermal resistance. And the suitability of the injection grade for quick-connectors and other temperature resistant parts extends to powertrain components including those integrated with Rilsan HT flexible tubing.