In 1823, Scottish chemist Charles Macintosh patented a method for making waterproof garments by using rubber dissolved in coal-tar naphtha for cementing two pieces of cloth together.
The now famous macintosh raincoat was named after Charles Macintosh. Macintosh raincoats were first made using the methods developed by Charles Macintosh.
Charles Macintosh Invents Waterproof FabricWhile he was trying to find uses for the waste products of gasworks, Macintosh discovered that coal-tar naphtha dissolved india rubber. He took wool cloth and painted one side with the dissolved rubber preparation and placed another layer of wool cloth on top.