Behenyl polyethylene glycol methacrylate

Behenyl polyethylene glycol methacrylate (CAS 125441-87-4), also known by the abbreviation BEPEGMA, is a polymerizable macromonomer combining a long-chain C18–C22 alkyl group with a PEG spacer.

It is used to build amphiphilic functionality directly into polymer backbones, enabling rheology control, emulsification, and surface modification within a single copolymerizable unit for various industries.

In personal care formulations, it is copolymerized into associative thickeners and film-forming polymers that provide viscosity control and sensory enhancement in creams, lotions, and styling products.

Home care and industrial cleaning formulators incorporate it into polymer systems where both surface-active behavior and thickening are required in a single ingredient for high performance.

In plastics and polymer processing, it acts as a reactive compatibilizer or surface-modifying comonomer, improving substrate wetting and adhesion in coatings and dispersions during the manufacturing process.

It is also used to synthesize comb-type or graft copolymers where the PEG side chains provide steric stabilization in aqueous dispersion systems, ensuring long-term stability and shelf life.

Behenyl polyethylene glycol methacrylate is typically supplied as a waxy solid or viscous paste, depending on the PEG chain length of the specific grade provided by the chemical manufacturer.

It is available in technical grade for industrial polymer synthesis applications. Specifications and molecular weight distributions vary by supplier, so buyers should confirm purity prior to sourcing.