Automotive Refinish Solventborne Coatings

Low viscosity, high solids

2K PU systems for automotive refinish coatings are state-of-the-art

Two-component (2K) polyurethane systems have long been the industry standard for automotive refinishing. While solventborne systems are still a state-of-the-art technology, more environmentally friendly coatings are available to meet more stringent regulations and consumer desire.

solventborne automotive refinish
State-of-the-art car refinishes

2K polyurethane coating systems remain the state-of-the-art technology for automotive refinishing. Yet, more environmentally friendly coatings systems based on polyurethane resins from Covestro are gaining market share as the market trend of reduced volatile organic content- (VOC) emissions continues.

Low-viscosity polyisocyanates help reduce the use of solvents significantly, while offering the same high performance of traditional solventborne coatings – in some cases even exceeding them.

While the isocyanate component is typically the smaller ingredient in a coating system, its influence on the properties of refinish coatings is significant. The functionality and viscosity of the polyisocyanate are major contributors to the quality of the solvent-based refinish paint.

For a high-performance 2K clearcoat, primer and filler systems, aliphatic polyisocyanates from Covestro are a top choice.

Solvent-reduced high solid PU coatings systems, known as polyaspartics, offer the lowest possible solvent content. They also help achieve the maximum solids content with a combination of reactive thinners and low-viscosity polyisocyanates plus a polyaspartics polyol. Importantly, these high solid solventborne automotive refinish systems contain less than 250g/l of solvent.

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