AUXILIARIE - Royal Talens

535Casein Tempera binderBefore the development of oil paints in the 15thcentury the so-called ‘tempera’ paints were usedin particular. The name comes from the Latinword ‘temperare’, which means to mix. The mostimportant tempera paints are ‘egg tempera’ and‘casein tempera’. A characteristic of these types ofpaint is that they can be mixed with both water andoil. Just as certain components of an egg, casein(a component of milk) also makes it possible toMixing proportionsCaseinTempera binderand oil colourdisperse oil droplets homogenously throughoutwater. Such a dispersion is called an emulsion.By mixing equal parts of casein tempera binderand oil paint (never more oil paint than Caseintempera binder) a water mixable paint is createdthat once dry, produces a matt and lean paint film.This technique is often used for an underpaintingthat is completed with oil paint, particularly inglazing techniques.Talens Casein tempera binder 103Purpose: Making a water mixable casein tempera paint in combinationwith oil coloursComposition: Casein solution, thickening and matting agents, emulsifier• Mix 1 part of binder to a maximum of 1 part of oil colour• Gives a satin gloss when dry• Dries quickly to a virtually waterproof finish• Highly suitable for making underpaintings with oil painting techniques• Available in: 60 mlOil colour