All of our products are UV stable, but most of the aromatic compounds
will yellow within a few months under intense UV light, but none of them
are subject to degradative oxidation. They will maintain their structural
integrity indefinitely in direct sunlight. To gain color stability,
Engineered Polymers recommends using our aliphatic products such as
RAP,
RAP-60,
RASP or
AJS. All of these
products do not discolor in direct sunlight and will remain the initial
color indefinitely.