Interplastic Corporation is a company focused on the production and distribution of unsaturated polyester and vinyl ester resins, gel coats, and colorants for the composites and cast polymer industries.

We’ve been manufacturing CoREZYN® thermoset resins, gel coats, and colorants for the composites and cast polymer industries since 1959. Today, we produce the most extensive line of vinyl ester resins in the marketplace.

Our full-service product development laboratories are located in Minneapolis and Saint Paul, Minn., Fort Wright, Kentucky, and Hawthorne, California. All of our manufacturing facilities and research and development laboratories are ISO certified.