(Hydrolysis Resistant) PBT (polybutylene terephthalate)
When you need a material with more resistance
Ultradur® HR (Hydrolysis Resistant) PBT (polybutyleneterephthalate) is intended for applications that demand mechanical property retention during exposure to high heat, humidity, and with some grades, chemical attack.
Grades include Ultradur B 2300 G6 HR, Ultradur B 4043 G6 HR and Ultradur B 4300 G6 HR, which are 30% glass fiber reinforced products available in black and uncolored versions. Ultradur B 4043 G6 HR and Ultradur B 4330 G6 HR are higher performance offerings which have improved chemical resistance to NaOH (Sodium Hydroxide). This feature benefits molded components under load that can experience premature cracking when exposed to NaOH.
Ultradur HR PBT is also laser weldable for easier assembly and has higher flow properties delivering measurable benefits over standard PBT grades. Some Ultradur® HR grades have been formulated to be sensitive to laser light and may be used in applications requiring laser-printing for part identification (1). The higher performance of Ultradur HR PBT has led to testing and approval for its use in connectors, crash sensors, and wheel speed sensors by OEMs and component manufacturers.
Benefits for Parts Manufacturers
and Injection Molders include:
retention after exposure to high heat and humidity
Sodium Hydroxide Stabilized
flow molding performance
(1) Actual contrast levels and uniformity of laser printed lines are dependent on variables such as type of laser used in the process, surface condition of the molded part, and part geometry. It is the responsibility of the user to determine the suitability of Ultradur® HR for use in an application requiring laser-printing.