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A natural resin exuded from trees of the family Coniferae, Dipterocarpaceae and Burseraceae. It occurs as transparent roundish masses, coloured from pale yellow to brown. Gum Dammar is soluble in white spirit D40, turpentine oil and other aromatic hydrocarbons; it has good colour stability and is compatible with other resins, waxes, oils and pigments. It is considered one of the best resins for picture varnishes with good reversibility and scarce sensitivity to humidity. It is also used as an ingredient in wax-resin mixtures, painting mediums and emulsions with gouaches. |
