Ethoxylated pentaerythritol tetraacrylate

Ethoxylated pentaerythritol tetraacrylate (CAS 51728-26-8), also sold as RP 1040, is a multifunctional acrylate monomer acting as a reactive crosslinker and diluent in UV- and EB-curable systems.

Where is Ethoxylated pentaerythritol tetraacrylate used?

• UV-curable coatings: crosslinks the polymer network for hard, scratch-resistant films on wood, plastic and metal
• Radiation-curable adhesives and sealants: cure-speed control
• Printing inks, notably energy-curable offset and flexo: ink film cohesion and reduced oxygen inhibition
• Plastic substrate coatings: ethoxylated backbone enhances adhesion to low-surface-energy materials without primer layers
• Ethoxylation imparts flexibility and reduced skin sensitization potential versus non-ethoxylated counterparts.

Good to know: Ethoxylation gives flexibility and lower skin sensitization potential than non-ethoxylated counterparts. Viscosity and acid value are key metrics, with technical-grade specifications the norm for this product class.

Commercial specifications

• Drum and IBC quantities
• Standard commercial grades characterized by acrylate functionality
• Low-color or low-odor variants offered by some suppliers for graphic arts