Accelerator 553S

Back to search

Metal accelerator

Metal accelerator

Accelerator 553S is a low-cobalt accelerator for curing UP resins.

  • Product name

    Accelerator 553S
  • Chemical family

    Metal accelerator
  • CAS number

  • Physical form

  • Regional availability

    Africa, Europe, India, Middle East
  • Chemical name

    Cobalt(II) 2-ethylhexanoate in solvent mixture
  • Applications

    Accelerator 553S is a solution of metal complexes, partly based on acobalt salt in an organic solvent. Accelerator 553S gives in comparison with the commonly used cobalt accelerator a much faster cure with comparable gel time.

Market Segments

Thermoset composites

Detailed description

Solution of 1.9% metal complexes for curing unsaturated polyester resins in combination with organic peroxide at room and elevated temperatures. Typically recommended for pre-acceleration of vinylester resins to avoid foaming during cure when using standard MEKP.


  • Cobaltaccelerator


  • Engineered Stone,
  • Gelcoats,
  • Buttons,
  • Coatings,
  • Continuous Laminating,
  • Resin Transfer Molding,
  • Filament winding,
  • Vinylesters,
  • Hand lay up and spray up