DESMOPHEN 650 MPA is a branched, hydroxyl-bearing polyester suitable for use as a co-reactant, usually with Desmodur® N 75A, to formulate lightfast and weather-stable, two-component coatings. DESMOPHEN 650 MPA polyester can be combined with Desmodur N 75A to create durable coatings with excellent lightfastness, gloss retention and weather stability over long periods of exposure. The coatings also demonstrate very good resistance to chemicals and high abrasion resistance, making them well-suited for applications requiring protection from environmental elements.