Word: phenols
(lookup in dictionary)
(lookup stats)
Dates: during 1990-1999
Sort By: most recent first
(reverse)
Others nearly beat him to it. As early as 1872, German chemist Adolf von Baeyer was investigating the recalcitrant residue that gathered in the bottom of glassware that had been host to reactions between phenol (a turpentine-like solvent distilled from coal tar, which the gas-lighting industry produced in bulk) and formaldehyde (an embalming fluid distilled from wood alcohol). Von Baeyer set his sights on new synthetic dyes, however, not insulators. To him, the ugly, insoluble gunk in his glassware was a sign of a dead...
...with page after page of failed experiments, Baekeland finally developed a material that he dubbed in his notebooks "Bakelite." The key turned out to be his "bakelizer," a heavy iron vessel that was part pressure cooker and part basement boiler. With it, he was able to control the formaldehyde-phenol reaction with more finesse than had anyone before...
Initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish. Further heating turned the liquid into a pasty, gummier goo. And when Baekeland put this stuff into the bakelizer, he was rewarded with a hard, translucent, infinitely moldable substance. In a word: plastic...