Recent natural resins were obtained from thick sticky secretions of evergreen woody plants (excreme

Recent natural resins were obtained from thick sticky secretions of evergreen woody plants (excrement looks like deciduous plants are called rubber and unlike resins are soluble in water). They occur primarily in resin ducts or bladder plants as a means of defense against injuries spoljašnih crust of parasitic insects. Secondarily, the resin formed under the influence of stimuli, the largest part of the world production is obtained by scratching the surface of wood from which it starts leaking bargain crazy resin that is collected and processed. The resin that oozes from the tree changes the physical and chemical bargain crazy air: the physical changes due to evaporation of essential oils and becomes thick and at the end of a hard situation and chemically oxidized so it conditional on strength, hardness and darker bargain crazy color resin.
Balsams are aromatic treacly liquid, resinous substances like honey, pure, clear or frosted appearance. Coloration varies from yellow to dark-brown color. It is a natural resin with Applica essential oil or turpentine oil.
Air hardens due to evaporation of volatile oils. Interfere with oils and solvents. The emulsions provide stable coatings - not yellow or crack. Have higher elasticity than oil-resin varnishes but are not used to paint the picture as long remain sticky and yellow.
The most popular painting in the Balsams turpentine (Venetian, Greek, bargain crazy Strasbourg-Canadian balsam ...); kopaiva Balm (Spanish, Portuguese, from Venezuela called marakaibo from Brazil para-balm ...); elemi Balm (America, Africa and Asia), etc. Turpentine is a balm which comes from the evergreen tree species (in our pine, larch, fir and spruce). Venice turpentine bargain crazy is obtained bargain crazy from species of larch that succeeding in central and southern Europe, relatively bargain crazy good quality, looks somewhat opaque yellowish-greenish color. In earlier centuries, Venetian turpentine is used as an ingredient in paint with resins or drying-oils. When the addition of small amounts enhances the plasticity of the material and not at all yellow. Oil Painting gives bright bargain crazy emaljni character. Canada balsam is derived from some sort of Canadian fir, pale-yellow color, pleasant scent.
Kopaiva bargain crazy Balm Balm is a tropical South American tree, and as the site mentioned and Spain, Portugal and South Africa. Kopaiva Balm is transparent-yellow, fluorescent-looking, slow-drying. Oil Painting gives plasticity appearance and prevents the thicker layers shrivel. Most often used in conservation picture as conditioner brittle paint layer.
Elemi Balm is a balm of tropical timber originating from Asia, Africa and America. Shining looks, somewhat opaque, consistency of honey, but the long standing becomes hard and brown. Distillation elemi balm gets the strong solvent - elemi oil.
Damar is a natural resin secreted by some species of tropical trees of the family bargain crazy Dipterocarpaceae in Southeast Asia. Nugget Damara is the surface covered by whitish powder. At the turn of the clean, transparent, yellowish coloration.
Damar is soluble in turpentine, mineral solvents (white spirit), bargain crazy toluene, xylene .... The solution is prepared from one part resin and three parts turpentine. Because of possible impurities nuggets dissolves so that the first pollinate and dried out, triturated, put the cloth, tied to a bag, immersed in a solvent bottom half, wrapped and fastened. In normal circumstances, the process will not take more than twenty hours. Faster melting bargain crazy is achieved by mild heating of the sun. Fresh damar a liquid cleaner because the aging of certain impurities which contains nuggets bargain crazy become soluble. The solution is not completely colorless. Turbidity natural damar varnish is quite insignificant, it is sufficient that the solution is at a standstill for several days to those deposited on the bottom.
The earliest data on the use of Damara as painting material originating from the 18th century. As a resin varnish was first used around the 1829th year, and greater use of damar varnish begins fifteen years later. Damar is a hard, brittle resin, bargain crazy little flexibility. Brittleness damar coating reduces the addition of drying oils. Damar is in painting and used as an ingredient in the media. bargain crazy A mild solution of Damara in volatizable solvent white spirit in a concentration up to 2% is used as a fixative.
Mastic is a natural resin that is obtained from Pistacia lentiscus evergreen shrub that grows in Mediterranean countries. The painting is used exclusively mastic from the Greek island of Chios. Pale-yellowish or suzastog bargain crazy small rounded grains. Mastic is scented, quite brittle resin. Quickly softens at lower temperaturama.Omekšava in the mouth, which is used as a kind of chewing gum and after which it got its name (masticatio - chewing).
Soluble in turpentine, toluene, xylene, alcohols, oils heated ... Solution mastic bargain crazy is prepared bargain crazy in the same concentration as damar. Solution mastic is completely pure liquid better spreadability than damar. It gives a completely smooth coatings. Aging gets brownish-yellowish or greenish coloration. Rarely used in oil