Acetone?

[pblanc]

I can not imagine why anyone would use MEKP instead of MEK substitute as a solvent or thinning resin. MEKP is a little scary and MEK substitute smells like almonds, is used to decaffeinate coffee and is less volatile then Acetone. It is similarly toxic to acetone though evaporates more slowly. White vinegar as suggested above is probably the least toxic.

MEKP is not used as a solvent or thinner. It is used as a catalyst for polyester and vinylester resins. It is an oxidizing agent used in very small volumes to make the resin harden.

 

[Black_Fly]

So this resin is not correct for Kevlar UL?

 

[Guest]

So this resin is not correct for Kevlar UL?

Blackfly, MEKP is the correct catalyst for Vinylester, and the kevlar or UL part doesn’t matter.

The question is “What resin was used by the manufacturer to construct the canoe”?

Probably Vinylester; most canoe manufacturers use Vinylester. But a few use epoxy resin, and laying Vinylester over epoxy is not a good idea.