Ammonium Hydroxide/28 Cures are usually obtained at 260'F. If undercured, maximum properties will develop after several days aging. Even greater durability may be achieved by combining a thermosetting resin with the reactive latex polymer. Such resins have limited stability to low pH, so higher pH and latent-acid catalysts are used for compound stability. For example Oxalic Acid/10 Total solids, % "Methocel" MC (4000 std)/4 Total solids, % "Hycar" 2679 Latex/48 Total solids, % "Hycar" 2671 Latex/53.0 Melamine Formaldehyde Resin/25 Diammonium Acid Phosphate/10 "Carbopol" 934 Resin/5