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Ultradur High Gloss B4570 is one of new engineering resins from BASF

October 18/2011

(BASF) -- The new Ultradur High Gloss B4570 is one of the numerous new engineering resins from BASF making their appearance at the trade fair FAKUMA 2011 being held in October in Friedrichshafen, Germany. Compared to existing polybutylene terephthalate (PBT) grades: for headlight bezels, this material offers not only high gloss. It is specifically characterized by its extremely low outgassing at temperatures up to 160°C over an extended period of time. Like related resins in the Ultradur family, the new material can be metallized without difficulty and is immediately available in Europe and Asia.

When standard PBT grades that outgas at high temperatures are used for reflectors or bezels of especially hot headlights, fogging of the lens may result and reduce the light output of the headlight. On the one hand, automobile headlights have now become design elements with complex aesthetic forms. At the same time, the space in which the headlight must fit has become smaller. Both effects can lead to rising temperatures, which cause outgassing of the bezel material. The substances released during outgassing condense on the clear headlight lens and cause fogging. With the new Ultradur High Gloss, hardly any outgassing can be detected even at very high temperatures.

The material expands the PBT product line for headlights from BASF, which to date consisted of Ultradur B4520 for standard applications, Ultradur B4560 with optimized release characteristics and Ultradur S4090 with especially good flow properties and a minimal tendency to warp.

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