GAC (short for Golden Artist Colours) Specialty Acrylic Polymers are based on 100% acrylic polymer emulsions, and are useful as mediums or modifiers of acrylic paints. The consistency of the GAC polymers is more fluid and thin than other Golden mediums, so they will reduce the thickness of most acrylic Paints. Each GAC is a unique polymer with unique benefits and applications.
GAC 500 used to be called Clear Sealing Polymour and is a unique balance of film hardness and flexibility offering increased leveling, increased mark resistance and decreased dry film tack. GAC 500 is particularly useful for extending more fluid acrylic colours with minimal property change. It can be mixed with Airbrush Transparent Extender for a fast-drying, sprayable isolation coat.