Polyurethan top coat

  • Corrosion protective
  • 2-component
  • Solvent-borne
  • Single coat paint
  • Topcoat

TEKNODUR COMBI STRUCTURE 3614 is a two component high solid polyurethane top- or single coat. The hardener is an aliphatic isocyanate resin.

Topcoat or single layer coating (with an appropriate pre-treatment of the steel surface).

Low solvent content. Good drying properties. Good adhesion to sandblasted steel as well as cold rolled steel. When used as a single layer coating, this material builds up an effective corrosion protection, because it contains anticorrosive pigments. The structure can be achieved without any problems with standard application procedures.

Surface preparation

Remove from the surface any contaminants that might be detrimental to surface preparation and coating. Remove also water-soluable salts by using appropriate methods. The surface should be prepared as follows: STEEL SURFACES: Remove mill scale and rust by blast cleaning to preparation grade Sa 2½ (standard ISO 8501-1). Roughening the surface of thin-plate improves the adhesion of the paint to the substrate. ZINC SURFACES: Hot-dip-galvanized steel structures that are exposed to atmospheric corrosion can be painted if the surfaces are sweep blast-cleaned (SaS) till matt all over. Suitable cleaning agents are, e.g. aluminium oxide and natural sand. It is not recommended to paint galvanized objects that are subjected to immersion strain. It is recommended that new zinc-coated thin-plate structures are treated with sweep blast-cleaning (SaS). Surfaces that have been weathered to matt can be treated also with PELTIPESU Cleaning Agent. ALUMINIUM SURFACES: Treat the surfaces with PELTIPESU Cleaning Agent. Surfaces that are exposed to weathering are also roughened up with sweep blast-cleaning (AlSaS) or sanding OLD PAINTED SURFACES SUITABLE FOR OVERCOATING: Any impurities that might be detrimental to the application of paint (e.g. grease and salts) are to be removed. The surface must be dry and clean. Old, painted surfaces that have exceeded the maximum overcoating time are to be roughend as well. Damaged parts are prepared in accordance with the requirements of the substrate and the maintenance coating. The place and time of the preparation are to be chosen so that the prepared surface will not get dirty or damp before the subsequent treatment.
Solids abt. 61 % by volume
Weight solids abt. 78 % by weight
Volatile organic compound (VOC) abt. 350 g/l
Pot life 5 h (+23 °C)
Mixing ratio 8:1 by volume (comp. A : comp. B)
Gloss Semi-gloss
Drying time – dust free after 1 h
Drying time – touch dry after 3 h
Drying time - overcoatable after 2 h
Thinner TEKNOSOLV 6740
Clean up TEKNOSOLV 6740