Selecting Effective Xylene Replacements for Protective Coatings

This technical report is designed to assist formulators in replacing xylene in traditional solventborne coatings. Xylene, an aromatic hydrocarbon, is a significant component in protective coatings, often used as a primary solvent or diluent. The report evaluates the effectiveness of three oxygenated solvents—methyl amyl ketone (MAK), n-butyl propionate, and isobutyl isobutyrate (IBIB)—as replacements for xylene. These solvents were found to provide coatings with low hazardous air pollutant (HAP) content while maintaining performance. The report outlines the regulatory context, including the Clean Air Act and EPA standards, which necessitate the reduction of HAP emissions. It discusses the formulation process, emphasizing the importance of solvent blends that meet performance requirements while adhering to environmental regulations. Additionally, the report presents data on the physical properties of the suggested solvents and their blends, demonstrating their suitability as alternatives to xylene in protective coatings.