D.E.R 662UH Epoxy resin 25036-25-3 Dow Chemical Epoxy Resins >> Bisphenol A based Coatings >> Powder Coatings Powder coating D.E.R.* 662UH solid epoxy resin is a low molecular weight reaction product of liquid epoxy resin and bisphenol-A. D.E.R. 662UH solid epoxy resin is a low molecular weight epoxy resin. It can be used in both epoxy and epoxy/polyester powder coatings. Low molecular weight reaction product of liquid epoxy resin and bisphenol-A. Used in epoxy and epoxy/polyester powder coatings.