How to speed up the process of drying the oil quite a lot. One of them is the adding impurities of zinc, manganese, lead, cobalt, which are added in the form of salts of organic acids. These salts are called sequests and they greatly affect the process of drying the oil in terms of speed and also some of the main and additional properties of the resulting coating. With the introduction of a sequcase in oxidized or polymerized oils, it turns out olifa. Sometimes excess salts of heavy metals delay the process of drying varnishes or simply spoils the quality of the applied oil. Sickatives also affect the process of aging of the coating in the same way and therefore this element should be used only in certain and very accurate proportions. When heating oils to 250 degrees Celsius, partially organic radicals simply break off, oxygen appears instead of them. This allows us to understand what, when heated, it is necessary to use special hardeners, which do not allow the process to go under control at 200-250 degrees drying of the varnish.