In South America, Malaysia and Indonesia grows a tree called hevea. When cut its bark is white latex - latex. It is collected: on the tree, make incisions, of which the juice flows in a small tank attached at the bottom of the barrel. Juice called hevea rubber.
The demand for rubber is huge, as it produces rubber, and therefore, automobile tires, rubber tube, soles, tube, pipette, toys, and much of what we use every day. The process of making rubber tires is called vulcanization. Vulcanization is the binding molecules of the rubber with sulfur atoms.
In Europe, the rubber became known only in the early nineteenth century, the Use of found property of rubber to give a waterproof material, which it was soaked. In England began to produce raincoats and galoshes, oil impregnated with a solution of rubber. But they were not popular, because the frost had cracked, and in the summer softened and stuck to the body. It was necessary to make such a rubber, which would preserve the elasticity and strength at different temperatures. This material was discovered by accident. In 1839, American scientist H. Goodyear accidentally dropped a piece of rubber mixed with sulphur, not on the table, and on a hot stove. A piece of charred, but in the middle of his thoughtful strip of unusual material, which possessed the desired properties: the strength of elastically. This material is subsequently called rubber.
Of course, hevea today is not the only source of rubber. Man has learned to produce synthetic rubber from petroleum.