Paints are composed of 4 main families of raw materials:
1- Resins ( or binders).
Resins are film-forming elements which allow to obtain a homogenous attached and protective film on the treated surface. The scope of application of a paint is determined by the material. Distinguish between:
- oil-based (alkyd) : multi-purpose.
- acrylic : acqueous or solvent-containing.
- vinyl : mainly used in the building industry.
- epoxy : very high chemical resistance against discharge, as well as excellent mecanical resistance.
- polyurethan : more flexible, resistent against shocks, UV rays and bad weather conditions.
2- Solvents.
Solvents are used to make resin soluble and ready to spread. Distinguish between:
- White Spirit : rather slow -drying.
- Xylene : faster- drying.
- Naphtha .
3- Powders.
The are part of the formula and serve different purposes:
- pigments : they have an influence on the attractiveness, the colours, rust or heat-resisting properties etc...
- "loads" : they influence the weight, the hold etc...
4- Additifs.
There are additifs with different functions:
- Siccatifs : which accelerate the drying of oil-based resin.
- ..... : to prevent foaming.
Afterwards, distinguish between monocomponent and bi-component paints.
The former are ready to use.
The latter are delivered with a separate paint base and hardener. They have to be mixed together just before application, and need to be applied within a delay varying between 30 minutes up to 4 hours depending on the formula. Bi-component paint is of a much higher quality, will be longer-lasting and provide longer-lasting protection.
It is often indispensable to prepare the surface to be painted with an undercoat or primer, which also exists in different formulas:
- primers for oil-based paint.
- primers for acrylic paint.
- a Primer for Smooth Surfaces for non-adherent surfaces.
- bi-component primers for bi-component paint.
Depending on your project consult the following advice cards:
- Painting with Food-Compatible Paint
- Painting Stone
- Painting a Concrete, Cement , Terracotta or Stone Floor
- Painting Steel
- Painting Galvanized or Zinc-coated Steel
- Painting Aluminium
- Painting a Cast Iron Fireback
- Painting a Cast Iron Radiator
Tel. : +33 (0)5 45 70 80 80
For any professional use of this advice card, please contact us.
Smooth Surface Primer VALMOUR
Universal acrylic undercoat specially formulated for very smooth or porous surfaces which offer no hold. Smooth Surface Primer VALMOUR ensures the hold of finishing paint on materials which cannot be covered directly with classic paint, like tiles, stoneware, ceramic, glass, plastic, varnished wood, iron-containing metal, rust-proof metal, concrete, plaster, chipboard etc... Remarks : Interior and exterior use. ...
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VALMOUR VALCOAT Primer
Anticorrosion epoxy bi-componentprimer for treating metal sufaces (apart from light alloys), concrete or wooden surfaces before applying VALCOAT Food Paint. In this case, the latter has to be applied between 12 and 36 hours after the primer. Remarks: Delivered in a kit containing the paint base and the hardener . Fluid, easy to apply. ...
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VALCOAT Food Compatible Paint VALMOUR
Coating for allmaterials in permanent contact with foodstuff, from 20°C to 100 °C: wine or water tanks, wine press, food truck, earthenware or cast-iron fondue dish etc. VALCOAT Food Compatible Paint is a solvent-free bi-component epoxy paint which is delivered in a kit containing the paint base and the hardener. Can be used on metal, stone, concrete, ...
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