Werniksy mastyksowe i damarowe

The intention of the paper is to characterise the past and future of two kinds of varnishes: based on gum mastic and dammar resin. The author presents information on the origin of mastic and dammar, their commercial class, physical and chemical properties as well as resistance to aging. Special attention is paid to the influence of certain additives, such as solvents, matting agents, plasticisers, UV absorbers and HALS photostabilisers. The article describes commercially available varnishes and mentions assorted non-commercial formulas.