SP 1044 Octylphenol and formaldehyde Schenectady International Aminoplaste / Phenoplaste (UF, MUF) >> Phenol Formaldehyde ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) SP-1044 is a heat-reactive resin made from octylphenol and formaldehyde. This product was designed specifically to cure Isobutylene-Isoprene (Butyl) rubber by the resin cure system. Resins of this type can also be used to partially cross-link elastomeric materials to form a pressure sensitive mass. Heat-reactive octylphenol and formaldehyde resin. Can be used to partially cross-link elastomeric materials to form a pressure sensitive mass.