Chronology of Materials Technology

-4000 Copper metallurgy is invented and copper is used for ornamentation.
-3000 Bronze is used for weapons and armor.
-1500 The Hittites develop crude iron metallurgy.
-1200 Invention of steel when iron and charcoal are combined properly.
700 Porcelain is invented in China.
1839 Charles Goodyear invents vulcanized rubber.
1909 Leo Baekeland presents the Bakelite hard thermosetting plastic.
1931 Julius Nieuwland develops the synthetic rubber neoprene.
1931 Wallace Carothers develops nylon.
1953 Karl Ziegler discovers metallic catalysts which greatly improve the strength of polyethylene polymers.