Some corrections to various posts above. I went into Wikipedia to check out some of the materials discussed in this thread.

Acetone is Dimethyl Ketone, not MEK . Best known use is nail polish remover

Methyl Ethyl Ketone is also caled Butanone. Primary use is in paints as a solvent as it evaporates quickly. It is a solvent and flammable.

MEKP - Methyl ethyl ketone peroxide is a high explosive in its pure state. It is an oily liquid at room temperature. There is also an acetone peroxide; however it is a white powder at room temperature. MEKP is used in a diluted form (ratio not identified) as a polyester resin catalyst.

Bottom line appears to be, if you want MEKP get the resin catalyst

Hope this helps,

John C