Polymers
GAC (short for Golden
Artist Colors) Specialty Acrylic Polymers are based on 100% acrylic polymer
emulsions. The GACs
are useful as mediums or modifiers of acrylic paints. GACs can be used to
extend acrylic colors, to regulate transparency, create glazes, increase gloss,
reduce viscosity or improve adhesion and film integrity. GAC polymers can also
be used for binding pigment solids for various effects and surfaces. Unlike the
other GOLDEN Mediums and Gels, GAC Acrylic Polymers have only a minimum amount
of thickeners, levelers, defoamers and surfactants to ensure good film
formation. The
consistency of the GAC
polymers is more fluid and thin than other GOLDEN Mediums, so they will reduce
the thickness of most GOLDEN Acrylic Paints. GOLDEN Fluid Acrylics are slightly
thicker than the GACs,
but will exhibit less change in viscosity with the addition of a GAC polymer.