What is disclosed are adhesives and bonding methods employing a single coat
of a solvent-based adhesive that effectively bonds thermoplastic polymers
and especially thermoplastic elastomers. The adhesive components are a
organosilane component selected from organosilane-isocyanate adduct and
isocyanato-organosilane, a post-chlorinated polymer containing propylene
repeating units or derivative thereof, and solvent. Also disclosed are
methods for joining a rigid, structural substrate to a molten polymer such
as a TPE via injection molding or extrusion. Durable adhesion between the
adhesive treated portion of the rigid substrate and the melt-processed
polymer is achieved with or without a previous heat treatment on the
adhesive-coated substrate prior to joining to the thermoplastic melt.
