Effective paints and coatings for industrial painting of metal surfaces
Paint and coating materials are multi‑component systems that, after application and drying, form a durable protective film known as a coating. These coatings ensure product durability, protect against external influences, and provide decorative properties.
Components of paint and coating materials
Film‑forming binder (resin)
The binder binds fillers and pigments within the coating, must be soluble in organic solvents, provide good adhesion to the substrate, and form a hard protective film after drying.
The binder determines the coating type and its key properties:
- Drying mechanism and rate
- Resistance to solvents and other chemicals
- Durability in outdoor exposure
- Adhesion
- Mechanical properties
- Gloss
Solvents
Solvents are volatile organic liquids or liquid mixtures used to dissolve binders and adjust coating viscosity.
They influence the following coating properties:
- Viscosity
- Evaporation rate
- Wetting and adhesion to primers
- Crosslinking and achievement of the required performance
Pigments
Pigments are finely dispersed colored powders that affect:
- Color
- Gloss
- Outdoor durability
- Corrosion protection
Fillers
Fillers are insoluble inorganic solids added only to opaque coatings (primers, enamels). Proper pigment‑to‑filler selection can improve coating performance.
Examples:
- Carbonates
- Silicates
- Kaolins
Important: Fillers do not provide hiding power.
Additives
Additives are substances added in small amounts, often less than 1%, to impart specific properties to coatings. A coating may contain one or several additives.
Hardener
A hardener is an essential component of all two‑component coatings. It is a chemical compound added to initiate crosslinking and polymerization.
Catalyst
A catalyst is a chemical substance that initiates and accelerates polymerization or film formation without becoming part of the final product.
Important: Adding hardeners or catalysts to heat‑curing enamels results only in physical drying; chemical crosslinking does not occur, and the declared coating properties are not achieved.
Types of coatings
Primers
Primers may be used to improve adhesion (adhesion primers), provide corrosion protection (anticorrosive primers), or level surfaces (filler primers).
Topcoats (enamels, varnishes)
Topcoats protect products from environmental exposure (moisture, UV radiation, gases, salts, chemicals) and provide decorative appearance. System performance depends on both primer and topcoat properties as well as total dry film thickness. Some specially designed topcoats can be applied directly to metal (DTM).
Physically drying coatings
- Drying occurs solely through solvent evaporation
- No chemical reactions increasing molecular weight
- Moderate resistance level
- Main advantage – fast drying
Examples:
- Perchlorovinyl (PVC‑based)
- Vinyl copolymer coatings
- Acrylic coatings
- Chlorinated rubber coatings
Distinctive features
Chemically curing coatings
- Drying begins with solvent evaporation followed by chemical reaction
- Slower drying compared to physical drying
- Higher resistance level
- Greater outdoor durability
Air‑oxidizing coatings
Two‑component chemically curing coatings
Coating material properties
Coating performance properties
Distinctive features of coating types
Comparative table of enamel types
Compatibility of different coating types
We offer coatings that help improve appearance and extend product service life while supporting performance and sustainability goals. Our solutions include not only coatings, but also expertise, tools, equipment, consumables, and industry‑leading support.
