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Question asked 2017-10-10 12:35:23 ...
Most recent comment 2017-10-11 17:51:41
Egg Tempera
Many years ago I bought a product called Disponil from, I think, Kremer Pigment in NYC - it worked great at combining hard to wet pigments with water. I haven't been able to find Disponil again. I now use Golden Paint's Universal Dispersant. Am I safe in presuming that the Golden's product is compatible with egg tempera (for pigments that resist wetting)? Any other comments on dispersants and egg tempera?
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Moderator Answer
(mkinsey)
Denatured alcohol is a good wetting agent for pigments that don't readily combine with water-based vehicles, and will not adversely affect a tempera medium. Disponil is a BASF brand range of surfactants used industrially for making house paint and glues. These are not available as consumer products. Paint manufacturers often have to combine surfactants with de-foaming agents, because they may tend to lather like detergent.
I will defer to Golden on details of their Universal Dispersant, but I believe it already contains a defoamer, and is more ready-to-use than surfactants alone.
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