<i>ALBESTER</i> 5550 Polyester resin Hexion Specialty Chemicals Polyester Coatings Powder coating Metal Albester 5550 is a carboxyl-terminated, polyester, powder resin designed for cure with PRIMID at a 95/5 PE/PRIMID ratio. The resulting powder coatings are designed for exterior use. Provides good anti-yellowing resistance and excellent flexibility. Albester 5550 has been specially designed for cross-linking with Primid, XL 552. The resulting coatings show good resistance to yellowing on baking even in direct-fired gas ovens, good flow, good exterior durability, and excellent flexibility. Carboxyl-terminated, polyester, powder resin. Used in various powder coating applications for exterior use. Offers good resistance to yellowing on baking even in direct-fired gas ovens. Provides good flow, good exterior durability and very good flexibility.