ULTRADUR® B 4450 G5 HR ORANGE 55094 Polybuthylene Terephthalate

Ultradur® melts are stable at temperatures up to 280°C and do not give rise to hazards due to molecular degradation or the evolution of gases and vapors.

Like all thermoplastic polymers, however, Ultradur decomposes on exposure to excessive thermal stresses, e.g. when it is overheated or as a result of cleaning by burning off. At temperatures of > 290°C can be emitted: carbon monoxide, tetrahydrofuran.Under special fire conditions traces of other toxic substances are possible.

Formation of further decomposition and oxidation products depends upon the fire conditions. When Ultradur® is properly processed and there is adequate suction at the die no risks to health are to be expected.Further safety information see safety data sheet of individual product.

• Provide suitable exhaust ventilation at the drying process and in the area surrounding the melt outlet of processing machines. Closed containers should only be opened in well-ventilated areas. Ensure thorough ventilation of stores and work areas. When incorrectly processing an unpleasant odour can be produced, especially when the recommended processing parameters are exceeded. Check
• - Melt temperature
• - Residence time
• When there is a strong odour, immediately check processing parameters, ventilate the area well and recheck moisture content of material. If necessary stop processing and redry the material. Any short stoppages in production, it is recommended that you inject material into the mould not purge an air shot. It is advisable to dispose of purgings etc into water containers.

Standard packaging includes the 25-kg-bag, the 1000 kg octabin (octagonal container) or the 1000 kg big bag.

All containers are tightly sealed and should be opened only immediately prior to processing.

Ultradur® can be stored for a longer period of time in dry, well vented rooms without causingproblems in processing.

Ultradur® should generally have a moisture content of less than 0,04% when being processed.

In order to ensure reliable production, therefore, pre-drying should generally be the rule and the machine should be loaded via a closed conveyor system.   

In order to prevent the formation of condensed water, containers stored in unheated rooms must only be opened when they have attained the temperature prevailing in the processing area.

Measurements have shown that the interior of a 25-kg bag originally at 5°C had reached the temperature of 20°C in the processing area only after 48 hours.