Bonding to Acidic and Porous Substrates

Some substrates, for example paper, cork, cardboard, leather, dichromated metals and some fabrics can be slightly acidic, and since the cyanoacrylate contains an acidic stabiliser the adhesive will be very slow coring or may not cnre at all. For these substrates, a 

This additive is now used in some consumer cyanoacrylates because it reduces the dependence on surface moisture to cure and ultimately leads to good bond strength with many substrates. 

Similarly because these surface insensitive cyanoacrylates are good general purpose bonders, they are particularly suited to the maintenance sector where the condition of the substrate is not well defined. 

This family of cyanoacrylates are fast curing. However they may cure too quickly in some applications, and fail to adhere properly to the surface. 

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