Interpon PZ formulation, patented by AkzoNobel, is based on:
- zinc particles at a 50% weight content, combining dust and lamellate zinc to improve the primer conductivity ; it is important that the zinc content is high enough to get the cathodic protection effect and that the zinc is also “available” to react - not completely bonded by the resin
- an epoxy resin for its well known anticorrosive property.
Both Interpon PZ 660 and PZ 770 primers are formulated on this basis.
On top of that, Interpon PZ 770 includes a specific anticorrosive function which improves the protection in case of scratch.
Both Interpon PZ show the zinc grey colour more or less dark.
Interpon PZ in a glimpse
> High anticorrosion protection especially with a grit blasting pre-treatment
> A renowned reliability since Interpon PZ 770 is:
- certified by ACQPA, Association pour la Certification et la Qualification en Peinture Anticorrosion – N° C4A NV 572
- approved by SNCF (French railways) according to the NF F 19-478 specification
> A good finish quality in comparison with the other metal zinc protections which generally present an irregular and porous surface causing coatings bubbling
> An economical zinc powder primer in terms of cost per m2 due to its moderate density (2,0)
> A rigorous application specification combined – depending of the country – with an approved applicators network
> The possibility to apply:
- a PU 2K liquid topcoat on the Interpon PZ primer by respecting a maximum application delay of 12 hours
- a third antigraffiti powder layer
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