- Dark Blue
- Hunter Green
When mixing pigments into epoxy, you will want to combine resin and hardener before adding the pigments. The reason you want to combine the resin and hardener first is because the ratio of resin to hardener is extremely important in epoxy systems, and adding pigment before the hardener will throw off the ratio.
The time to start tinting your gelcoat or polyester resin is before adding the MEKP catalyst, because once you add the catalyst, the curing process begins. When you’re mixing pigments, the resin will probably kick while you’re still tinkering with the pigments to get the color right. The idea is to mix the pigment in first so the gelcoat remains uncatalyzed while you’re testing for a color match. When the color matches and you’re happy with it, you mix in the catalyst and apply the gelcoat.
If you’re trying to get a color match for your gelcoat, it’s important to understand that, when mixed with coloring agents or pigments, neutral gelcoat produces bolder, darker colors and white gelcoat produces lighter, more pastel colors.
- Darker colors require approx. 4 fl. oz. per gallon of resin
- Lighter colors require approx. 6 to 8 fl. oz. per gallon of resin
Epoxy Gelcoat Coloring Agents MSDS