Three Bond 1797 - Primer für Cyanacrylat

Overview of Primer Three Bond 1797

The Three Bond 1797 primer is an alcohol-based solution for adhesion promotion prior to cyanoacrylate adhesives. It is particularly suitable for difficult-to-bond plastics such as PE, PP and POM and replaces hazardous etching baths. By rapid evaporation, the primer leaves a clean, adhesion-ready surface with no residues.

With a viscosity of 0.85 mPa·s and a density of 0.80 g/cm³, it provides reliable wetting of the plastic surface. The shelf life of 6 months enables practical storage in manufacturing. The adhesion strength is up to 20 MPa, and curing occurs rapidly, typically 10 s (NBR).

Suitable for difficult-to-bond plastics

PE, PP and POM place high demands on the adhesive system. The primer forms a uniform, pore-free intermediate surface and improves adhesion between the plastic substrate and the subsequent cyanoacrylate adhesive. Pre-treatment with the primer enables more robust joints, reduces edge failure and increases the surface wetting of the CA adhesive.

Technical data

• Primary component: Alcoholic solution
• Color: Transparent to yellow
• Viscosity: 0.85 mPa·s
• Density: 0.80 g/cm³
• Shelf life: 6 months
• Shear strength: 20 MPa
• Curing time: 10 s (NBR)

Application notes

Clean surfaces thoroughly, apply the primer thinly and allow to air-dry briefly. Do not dilute. Then use cyanoacrylate adhesive as usual.