Unmodified polycarbonate can suffer brittle failure when prolonged exposure to
certain chemicals occurs, especially under stressed conditions. Special stress
crack resistant Xantar grades are available to improve behaviour in those
"impact danger zone" situations. Xantar C blends are particularly suited to
providing better ESCR behaviour.
Food contact and steam sterilization
For applications requiring
food contact approval, special grades are required to withstand normal
sterilization techniques and give improved hydrolysis and lipid resistance.
For improved resistance to conditions in dishwashers, extra hydrolysis (steam)
resistant grades are offered. A biochemical
compliant grade is also available for medical and health care applications.
UV Stability
Standard polycarbonate can suffer from
discoloration and loss of impact after long-term UV exposure (sunlight).
Coloring plays an important role in this behavior. Special UV stabilised
Xantar grades are recommended to improve color fastness and long-term impact
performance.
