A resin is a solid or semisolid material that is typically transparent, hard, and brittle. It is a naturally occurring or synthetic substance that is insoluble in water but soluble in organic solvents. Resins are used in a variety of industries, including the manufacture of adhesives, coatings, inks, and plastics. Resins are typically viscous substances that convert into rigid polymers through a curing process. While resins occur naturally, such as those produced by plants, they are now more commonly synthesized. Learn about resin , a liquid polymer that can be converted into a solid structure with various properties and applications. Discover the main types of resin , such as thermoplastic and thermoset, and how they are cured with different methods and agents.