Pigments for Gel Coats

Gel coats form the exposed, weather-facing surface of fiberglass composites, so pigments must be highly weatherfast, non-reactive with the polyester or vinyl-ester resin and its peroxide cure, and supplied as fine dispersions that tint without disrupting cure or causing surface defects. Source From India supplies gel-coat-grade organics and pastes for marine, sanitary and transport composites. Buyers should confirm exterior weather and water fastness for marine exposure, compatibility with peroxide-catalyzed unsaturated polyester cure, resistance to fade and chalk on the outer surface, and streak-free dispersion. Because the gel coat is the visible durable skin, color longevity and cure-safe pigment behavior are decisive.