Desmophen® 650A-65 PMA

Desmophen® 650A-65 PMA by Covestro is a saturated polyester resin. It is supplied in propylene glycol monomethyl ether acetate and xylene (6:1). It is compatible with Desmodur® N 75 BA/X, N 100, and N 3200 aliphatic polyisocyanates. It has only borderline compatibility with most polyester and acrylic resins. Effectively used as a co-reactant for Desmodur N polyisocyanate two-component polyurethane coatings. Finishes based on Desmophen® 650A-65 PMA polyester and Desmodur N polyisocyanates are well-suited for uses requiring light stability and weatherability as well as good chemical and abrasion resistance. Suitable substrates include metal, concrete, wood, plastics and paper. Its flow can be improved by additions of cellulose acetate butyrate resins such as CAB 381-0. Recommended storage temperature is at maximum 30°C. It has a shelf life of six months.