Plasticolors Inc. (Ashtabula, Ohio, U.S.A.) offers users of thermoset composites, cast polymers and coatings its Colormatch IN-Series (traditional and phthalate-free) and DIN-Series (100 percent solid) inhibitors. Designed for easy incorporation into thermoset materials, the additives maintain shelf life and prevent premature gelation in polyester sheet molding compounds, polyester bulk molding compounds, polyester cast moldings and materials used in hand lay-up and other open molding applications.