... adhesive Improves surface bonding ability for difficult bonding materials(polyethylene, polypropylene) IntroductionDarbond Primer for cyanoacrylate ... purpose primer, to speed the cure of all Darbond brand cyanoacrylate adhesives.--Improves surface bonding ... polypropylene), consequently augments bonding strength.--Used for surface preparation for difficult bonding materials (polyethylene, polypropylene ...