The Difference between 2K HS and Acrylic Paints
2K HS, 2 Pack or 2 Component (commonly known as polyurethane paints)
Consists of Hydroxy Acrylic resin and isocyanate hardener. When mixed, this paint will cure and dry at room temperature, achieving excellent results. 2K HS paints has a high film build thickness per coat and is the nearest equivalent to original factory stoved finishes, giving excellent gloss, recoatability, flexibility, durability and chemical resistance.
Acrylic 1 Pack, 1K (commonly known as acrylic lacquer paints)
Unlike 2K paints which dries by chemical reaction or curing, this type of paint dries physically by simple evaporation of solvent or thinner. Due to the large amounts of solvent or thinner to needed to enable this type of paint, it has a low film build per coat. The gloss cannot compare to that of 2K and a gloss retention cannot be assured. This type of paint costs a third or a fourth of imported 2K paints and is still widely used even among some 5 Star paint shops.