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AKPEROX® L40S is a liquid dispersion of 40% dibenzoyl peroxide recommended for rapidly curing polyester and vinyl ester resins. AKPEROX® L40S should be used at a concentration of 1% to 3% in combination with amine accelerators.
AKPEROX® L40S is a dibenzoyl peroxide dispersion from AKPA designed for use in combination with amine accelerators, such as diethyl aniline, dimethyl aniline, and dimethyl para-toluidine. Containing 40% peroxide content, this catalyst compound should be used at 1% to 3%, depending on application conditions and formulation properties. It enhances the curing speed of polyester and vinyl ester resins at room temperature, even in the presence of humidity and fillers. AKPEROX® L40S can be used for filament winding and spray and hand lay-up of FRP and should be flushed from spray equipment using isopropanol, methanol, or acetone after use.
Appearance: White liquid
Density @ 20°C: 1.175 g/cm³
Viscosity @ 20°C: 1000 Pa·s
Active oxygen content: 2.57% to 2.71%
Peroxide content: 39.0% to 41.0%
SADT: 50°C
Shelf life: 6 months
CAS No. 202-327-6
Primary Chemistry: Dibenzoyl peroxide
Slow or improper curing of polyester or vinyl ester resins at room temperature
Curing polyester and vinyl ester resins Spray and hand lay-up of FRP
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