What does the term '2K' refer to in regards to urethane paints?

The term '2K' refers to a two-component catalyzed paint resin system. This means that the paint consists of two separate components: the paint itself and a hardener or catalyst. When mixed together, these components undergo a chemical reaction that initiates the curing process, resulting in a durable and resilient finish. This system is favored in automotive refinishing and industrial applications due to its superior adherence, chemical resistance, and overall strength compared to single-component systems.

The other options do not accurately reflect the definition of '2K'. A single-component paint system would not involve a catalyst and is therefore not classified as '2K'. A type of clear coat refers only to a transparent finishing product and does not encompass the broader category of paint that includes color and other features within a two-component system. A low-volatile paint option relates to the emissions of volatile organic compounds (VOCs) but does not specifically describe the two-component nature of '2K' urethane paints.