Crastin® Hydrolysis Resistant Grades
Second Generation of Hydrolysis Resistant Crastin® PBT for Connectors
PBT polybutylene terephthalate, when exposed to heat and humidity, reduces polymer chain length, which eventually causes property loss with time. Crastin® HR (Hydrolysis Resistant) has been designed to ensure maximum product stability, even in extremely severe environments. The extended life time of Crastin® HR is therefore even better suited to meet new customer needs.
DuPont™ Crastin® HR5315HFS, HR5330HFS
While keeping the same properties and hydrolysis resistance performance as the previous Crastin® HR generation, both Crastin® HR5315HFS and Crastin® HR5330HFS have been developed to offer outstanding melt stability during molding. Long-term molding trials as well as extensive customer collaboration, have proven the process flexibility of Crastin® HR HFS products versus the existing PBT HR grades on the market. This unique combination allows a wider processing window, including the use of hot-runners and regrind, without sacrificing the best-in-class hydrolysis resistant product properties.
Features/Benefits of Crastin® HR HFS Second generation:
- Direct Drop-in solution vs existing Crastin® HR grades.
- Unique material offering a perfectly balanced offering of best-in-class hydrolysis protection and improved melt stability.
- Increased productivity through wider processing window vs competitive PBT HR resins.
- Cost reduction thanks to a regrind level of up to 30%
- Better color stability in demanding processing conditions.
- Laser markability (black color)
- Complex shapes with thinner walls, allowing high design flexibility and size reduction (miniaturization).
- Best in Class CTI (600 V for Natural/Orange* colors) for HR materials.