KN33 is a special formulated product that increases the tack of the Polychloroprene based adhesives. It is a unique tackifier for Polychloroprene based contact adhesive . KN33 is completely resin free, hence gives additional tack . Results vary from 15 to 35% depending upon the original formulation.

The use of KN33  requires almost no change in the existing formulation apart from reduction in the quantity of the antioxidant being used.