Acrylic

Technique

Acrylic paint can be applied with brushes, palette knives, rollers, airbrushes, sponges, or by direct pouring, and it accepts an unusually wide range of additive mediums that modify gloss, texture, flow, and drying time. Because it dries by evaporation of water rather than by the slow oxidation that governs oil paint, thin layers can become touch-dry in as little as ten to twenty minutes, allowing artists to work in rapid, additive layers and overpaint the same day, though this speed also means blending and wet-into-wet effects must be executed quickly or extended using retarder mediums. Once cured, acrylic film is insoluble in water and largely unaffected by subsequent glazes, so passages generally cannot be lifted, wiped back, or reworked the way watercolour or fresh oil paint can. The medium shows minimal colour shift between wet and dry states and does not darken or yellow with age the way some oil paint does, and it can be built into thick, textured impasto with an internal flexibility that resists the cracking that heavy oil impasto is prone to. Its capacity to mimic watercolour, gouache, or oil paint depending on dilution and additives, combined with a matte, waterproof, and highly durable finish, is what most distinguishes it technically from older mediums.

History

Acrylic paint's material basis originates with German chemist Otto Röhm's early twentieth-century research into acrylic resins, and BASF produced the first commercially usable acrylic resin dispersion in 1934, a formulation patented by Rohm and Haas. The medium reached artists first as a mineral-spirit-based paint: American painter and colourman Leonard Bocour, together with chemist Sam Golden, developed and marketed the solution-based acrylic brand Magna between roughly 1946 and 1949 for artists including Morris Louis and Barnett Newman. A distinct, water-based emulsion form of acrylic, derived from latex house paint technology, followed shortly after; Politec began producing Acrylic Artists' Colors in Mexico in 1953, and Liquitex launched its water-based acrylic paint line in the United States in 1956, making the medium widely accessible to studio artists for the first time. Mexican muralists Diego Rivera, David Alfaro Siqueiros, and José Clemente Orozco were early adopters, valuing acrylic's durability and resistance to weathering for large public murals. From the 1960s onward acrylic became closely associated with Pop Art, Colour Field painting, and later Photorealism, prized by artists such as Andy Warhol, David Hockney, and Bridget Riley for its flat, fast-drying, hard-edged finish, and it has since become one of the two dominant painting mediums in contemporary practice alongside oil.