Description
A water-based, matte paint with a casein binder. Dry casein is hydrolyzed with alkalis (lime, borax, ammonia, etc.) to form a clear viscous solution. Casein paints dry to a matte, brittle film that is insoluble in water and impervious to most paint strippers. It may sometimes be removed with strong alkaline or ammonia solutions. Casein paints have been used for panel paintings, wall paintings, and as architectural paints. It is too brittle for use on canvas. Casein paints were sometimes varnished or glazed to imitate oil paints. Commercial production of casein paints began about 1900. Prior to that time, most casein paints were prepared by the painter.
Synonyms and Related Terms
milk paint; casein colour (Br.); peinture à la caséine (Fr.); pintura a la caseína (Esp.); pittura alla caseina (It.); pintura de caseína (Port.); farmer's paint; casein tempera; casein painting; lime casein; badigeon
Other Properties
Insoluble in water or ethanol when dry. Soluble in strong alkalis and ammonium hydroxide. Impervious to most modern paint strippers.
Hazards and Safety
May yellow with time. Susceptible to mold growth.
Additional Information
° K.Wehlte, The Materials and Techniques of Painting, Van Nostrand Reinhold
Co., New York, 1975.
° R. J. Gettens and G.L. Stout, Painting Materials, A
Short Encyclopaedia, Dover Publications, New York, 1966.
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Last updated on: 7/24/2009 12:58:53 PM
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