What discovery marked the beginning of modern rubber technology?
Prior to 1839, the properties of rubber were dictated by the surrounding temperature. During the hot summer, rubber was sticky and malleable, while it became hard and brittle in the colder months. This was finally remedied by the discovery of the process of vulcanization. A mixture of rubber, white lead and sulphur was dropped accidentally upon a hot stove. When it was removed, the material was no longer affected by temperature. Despite stretching, it always returned to its original shape. This process of vulcanization made it possible to use rubber in raincoats, overshoes, and eventually many other products, including tires.
