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1766, Dec 291843, Jul 25
a Scottish chemist and inventor of waterproof fabrics. The Mackintosh raincoat (the variant spelling is now standard) is named for him. He devoted all his spare time to science, particularly chemistry, and before he was twenty resigned his clerkship to take up the manufacture of chemicals. In this he was highly successful, inventing various new processes. His experiments with one of the by-products of tar, naphtha, led to his invention of waterproof fabrics, the essence of his patent being the cementing of two thicknesses of cloth together with natural (India) rubber, the rubber being made soluble by the action of the naphtha. For his various chemical discoveries he was, in 1823, elected a fellow of the Royal Society.
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12/29/1766-Charles Macintosh, the inventor of rubberized, waterproof clothing, is born in Glasgow, Scotland.
10/12/1823-Charles Macintosh of Scotland begins selling raincoats (Macs) 
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