Stearyl acrylate

Stearyl acrylate (CAS 4813-57-4), also known commercially as octadecyl acrylate, is a long-chain alkyl ester monomer used to introduce hydrophobic character and flexibility into polymer systems.

Where is Stearyl acrylate used?

• Coatings and adhesives: copolymerized with acrylic monomers to improve water resistance, substrate adhesion and low-temperature flexibility in pressure-sensitive and structural formulations
• Personal care: film-forming polymers for hair fixatives, skin-feel modifiers and water-repellent emulsion systems
• Lubricant additive chemistry: viscosity modification and boundary lubrication performance in metalworking and industrial fluids
• Specialty plastics and elastomers: surface-modifying comonomer where controlled hydrophobicity and reduced surface energy are required
• Its C18 fatty chain makes it a practical building block for tailoring surface properties, film formation and lubricity in finished materials.

Good to know: Inhibited grades containing polymerization inhibitors such as MEHQ are standard for safe storage and transport.

Commercial specifications

• Bulk and drum packaging