Varnish

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....A : CHEMICAL Process Industries. The first varnishes were solutions of natural resins, the natural secretions of plants, and were produced by heating the resins, adding natural oils such as linseed, cooking and mixture to the desired visosity, and then diluting it with turpentine. The resultant coating took three to four days to harden and was not durable. Other drawbacks were variability in pro....

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.... formed by the condensation or urea or melamine with formaldehyde; polyurethanes and epoxy resins silicones and viny resins. Varnish tree, also called JATAESE VARNISH TREE, LIQUER TREE or WOOD OIL TREE, any of various trees whose milky juice is used to make a varnish or licquer. The term is applied particularly to an Oriental tree, related to poison, ivy, that is highly irritating to the skin. O....