TotalBoat Polyester Laminating Resin requires the adding of MEKP catalyst at the ratio of 7-8 drops of MEKP per one ounce of resin at 77°F (1.0-2.2% MEKP based on the weight of the resin). Mix thoroughly for at least one minute and apply immediately after. Adjust the amount of catalyst slightly as needed –add more MEKP catalyst for cooler conditions and less catalyst for warmer conditions.
For larger applications (where it is not feasible to count individual drops of MEKP), the required amount of MEKP should be based upon the weight of the polyester resin, to ensure accuracy. The use of MEKP catalyst levels outside of 1.0-2.2% may result in an inadequate cure, with laminates exhibiting moderate to severe post cure after demolding. The range of MEKP catalyst should be 1.0-2.2% based on the weight of the resin.