Editing Charles Macintosh (section)

==Biography==
Macintosh was born in [[Glasgow]], Scotland, the son of George Macintosh and Mary Moore, and was first employed as a clerk. Charles devoted his spare time to [[science]], particularly [[chemistry]], and before he was 20 resigned his clerkship to study under [[Joseph Black]] at the [[University of Edinburgh]],<ref>{{cite web | url=https://www.undiscoveredscotland.co.uk/usbiography/mac/charlesmacintosh.html | title=Charles Macintosh: Biography on Undiscovered Scotland }}</ref> and to take up the manufacture of chemicals. In this he was highly successful and invented various new processes. His experiments with [[naphtha]] led to his invention of waterproof rubberized fabric; the essence of his patent was the cementing of two thicknesses of cloth together with [[natural rubber]]. The rubber is made soluble by the action of the naphtha.<ref>{{EB1911|inline=y|wstitle=Macintosh, Charles|volume=17|page=250}}</ref> The naphtha was prepared by [[distillation]] of [[coal tar]], with the [[Bonnington Chemical Works]] being a major supplier.<ref>{{Cite journal|last=Ronalds|first=B.F.|date=2019|title=Bonnington Chemical Works (1822-1878): Pioneer Coal Tar Company|journal=International Journal for the History of Engineering & Technology|volume=89|issue=1–2|pages=73–91|doi=10.1080/17581206.2020.1787807|s2cid=221115202}}</ref>

Macintosh married Mary Fisher in 1790, daughter of Alexander Fisher, a Glasgow merchant. They had one son, George Macintosh (1791–1848). And one daughter, Mary Scott Macintosh. In 1823, he was elected a fellow of the [[Royal Society]] for his chemical discoveries. In 1828, he became a partner with [[James Beaumont Neilson]] in a firm to exploit the latter's patent for the [[hot blast]] blowing of blast furnaces, which saved considerably on their fuel consumption.<ref>{{ODNBweb|id=19866|title=Neilson, James Beaumont (1792–1865)}}</ref>

Charles died in 1843 and was buried in the [[Glasgow Cathedral]] graveyard.<ref>{{cite DNB|wstitle=Macintosh, Charles|volume=35|page=113}}</ref> He is buried with his parents in the ground of his great-grandfather, John Anderson of Douhill, [[Lord Provost of Glasgow]]. His name is added to the 17th century monument which stands against the eastern boundary wall. A late 19th century secondary memorial also exists, in polished red granite, slightly to the north, where Charles is again mentioned on the grave of his son, George.