The world appreciated Charles Mackintosh's contribution – a waterproof raincoat bears his name. The chemist and inventor Mackintosh experimented for a long time to produce waterproof clothing. As a result, he came up with the idea of folding two layers of fabric and gluing them together with natural rubber dissolved in coal tar. Such raincoats were actually waterproof, but rigid at low temperatures and sticky in hot weather. But even this clumsy and foul-smelling garment was in considerable demand. And when Charles Goodyear invented a way to vulcanize rubber, mackintoshes took on a familiar look and conquered the planet. You won't believe it, but Charles Goodyear was also born on December 29, although in 1800.
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