FR PBTs with No Bromine Are Recyclable

A new range of non-brominated flame-retardant PBT grades has been launched for electrical/electronics uses by Ticona, Florence, Ky.

A new range of non-brominated flame-retardant PBT grades has been launched for electrical/electronics uses by Ticona, Florence, Ky. Its Celanex XFR reportedly satisfies recent European Union recycling legislation, which makes equipment makers responsible for electronic scrap as of August 2005. The four new grades use an organo-phosphorus FR agent. One grade is unfilled and three are reinforced with 10% to 30% glass. Heat stability up to 300 C, absence of migration and emissions, and easy colorability are said to distinguish them from other phosphorus-based FR compounds. The new grades also reportedly retain the mechanical and electrical properties of standard PBTs. They offer low density, high tracking resistance, and good uv stability.