Methyl Ethyl Ketone Peroxide

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Methyl Ethyl Ketone Peroxide (MEKP) is a hardener or catalyst used for Polyester Resin. It is used in small quantities relative to the resin when mixing.

Use caution: Flammable.

Safety

MEKP is highly flammable. It is also corrosive. Do not leave exposed to skin for long periods of time. Wear protective goggles when mixing resin and hardener together. Keep away from children.

Mixing Table

Small amounts of catalyst are required for Polyester Resin hardening. See below for approximate values.

Catalyst & Resin Mixing Table
FOR THIS CONCENTRATION OF CATALYST L-50 OR M-50 1 QUART RESIN 1 GAL. RESIN 5 GALS. RESIN 55 GAL. DRUM 475 LBS.
0.5% RESIN 4.7 CC 0.2 OZ. 18.8 CC 0.72 OZ. 94.0 CC 3.6 CC 2.5 LBS. 40 OZ.
1% GELCOAT 9.4 CC 0.4 OZ. 37.6 CC 1.44 OZ. 188 CC 7.2 OZ. 4.95 LBS. 79 OZ.
1.5% 14.1 CC 0.54 OZ. 56.4 CC 2.2 OZ. 282.0 CC 10.8 OZ. 7.4 LBS 119 OZ.
2% 18.8 CC 0.72 OZ. 75.2 CC 2.9 OZ. 376.0 CC 14.4 OZ. 9.9 LBS. 158 OZ.

Note: These chemical reactions are temperature sensitive. Best results happen between 60°F - 80°F. We recommend you start at 1% for resins. Do NOT go lower than ½% for resin. We recommend you start at 1-1.5% for Gelcoats. Do NOT go lower than 1% for gelcoats.

For faster promotions than 2% call Advance Coatings Company

See Also

Hand Lay Up Guide - Detailed instructions for Polyester Resin application.