P 28 Resin Phenolic resin Akrochem Aminoplaste / Phenoplaste (UF, MUF) ADHESIVE >> Solvent based P-28 is a heat reactive phenolic resin which is light in color. It is considered non-staining. P-28 is used in Neoprene solvent cements. This product reacts with an active magnesium oxide such as ELASTOMAG 170 in solvent solution forming a salt which greatly increases the heat resistance of the adhesive. Non-staining, heat reactive phenolic resin. Used in neoprene solvent cements. Increases the heat resistance of the adhesive when used with an active magnesium oxide.