Macintosh, << MAK ihn tosh, >> Charles (1766-1843), a Scottish chemist and inventor, is best known as the inventor of waterproof fabrics. The mackintosh, a rubberized, waterproof outer garment, is named after him. Macintosh made many contributions to chemical technology. He opened a factory to manufacture alum and sal ammoniac before he was 20 years old. He also introduced into Britain the manufacture of lead and aluminum acetates and contributed to the technology of dyeing. Macintosh was born in Glasgow.
