Lucky – a substance, which are dissolved in volatile solvents resins and other polymers. When applying a thin layer of varnish on any surface the solvent evaporates, forming a shiny film of by polymerization film formers. This process is in some degree reversible, since the film can be re-dissolved in the same solvent. Typically, the name of the film-forming coatings determined by the type of matter, such as oil, resin, nitro lacquer, bitumen, etc. Less frequently referred to as lacquers, depending on the type of solvent (eg alcohol). Lucky oil (or fat) contain the oil than the resin. They dry out for a long time – from 1 to 4 days and give flexible and strong film. By the bold attribute, for example, varnish the floor.
It is composed of 41.2% oil, 22% resin, 36% solvent and 0.2% drier. This paint covers a wooden floor, thereby increasing their decoration, life (Resistance to abrasion increases). In addition, these films are not very sensitive to seasonal fluctuations in relative humidity inside the room, causing changes in wood moisture gidroskopicheskoy and, consequently, shrinkage or swelling of her. To be fair, the wooden floors, varnished, have a greater heat absorption than without the coating, ie, cause the sensation of cold in prolonged contact with him, that is lack of equality. Resin and oil paints contain more tar than oil or an equal amount (thin and medium). 'Skinny' paints dry quickly (6 to 24 hours), provide solid, but brittle film neatmosferostoykie; differ high gloss. Medium paints dry in a time of 48 hours, have an average elasticity and high gloss, well-polished, but not weatherproof. Lac medium oil contains about 30% oil, 42% shellac and 28% solvent.
This varnish is a good cover for furniture, keeping the texture hardwood. Covered them easy to polish wood alcohol until light. Spirit varnishes – is 30-35% – ing solutions of resins such as shellac in alcohol.