How did World War I affect the chemical industries of Britain and the United States?

At the onset of World War I, the chemical industries in Britain and the United States were ill-prepared to produce materials previously supplied by Germany, which dominated the global market for synthetic dyes and chemicals.1

The war necessitated significant shifts in industrial strategy:

• Britain: The government intervened to rejuvenate the domestic dye industry. This effort led to the consolidation of several companies into what would become Imperial Chemical Industries (ICI), a structure modeled after the large German combines like Bayer and BASF.1
• United States: A robust coal tar chemical industry developed rapidly to meet wartime needs. Unlike the European model of large combines, the U.S. chemical industry grew through the efforts of independent, research-oriented firms.1

Beyond dyes, chemists in both nations were actively engaged in developing explosives and poison-gas agents for their respective governments. Following the war, the global leadership in organic chemistry began to shift away from Germany toward Britain, the United States, and Switzerland.21