... ability for difficult bonding materials(polyethylene, polypropylene) IntroductionDarbond Primer for cyanoacrylate adhesive 2770 is one component, fast curing ... at room temperature, polyolefin primer. The product is used in combination with Darbond cyanoacrylate ... long life on parts. Typical Properties--General purpose primer, to speed the cure of all Darbond brand ...