Corrosion protection

Effect pigments, aluminium pigments

In functional coatings, it is less the visual effect than the functional properties of the metallic pigments which is the deciding criterion. Corrosion-protection systems are an outstanding example. The lamellar structure of metallic pigments provides effective “barrier protection”. The reflection that results from floating leafing pigments also provides protection against UV and IR radiation. In addition to the barrier function, the lamellar shape of zinc pigment particles offers an extra cathodic or electrochemical protection.

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EM aluminium pastes are standard, white spirit-based leafing materials and come in a particle-size range of approximately 10-20 µm.

They are mainly used in decorative and industrial coatings and, in particular, for functional coatings which require a high degree of barrier protection (corrosion-protection coatings) or high light-reflecting properties ( e.g. roof coatings).

D 50 value [µm] Solid content Solvent Application
EM/70 20 65 +/- 2 % white spirit
EM/90 17 65 +/- 2 % white spirit
EM/110 13 65 +/- 2 % white spirit
EM/130 10 65 +/- 2 % white spirit


Polytop® are conventional, i.e white-spirit/aromatic-solvent-containing, non-leafing aluminium pastes.

A wide particle-size distribution ensures good covering power. They are referred to as “economy qualities” and are therefore chiefly used in general industrial coatings.

D 50 value [µm] Solid content Solvent Application
Polytop 0900 14 65 +/- 2 % white spirit
Polytop 0130 11 65 +/- 2 % white spirit

If you would like further information we would be happy to assist you.


Related subjects

European Coatings Show 2019

SCHLENK Metallic Pigments GmbH exhibited at the European Coatings Show 2019 in Nuernberg, Germany.


Catalogue: Pigments for Coatings

SCHLENK provides a complete range of effect pigments for the coatings industry.


Coatings industry

Metallic pigments are used in a variety of applications in the coatings and plastics industry.