Upon developing the ability to synthesize 100-octane gasoline, Shell began supplying this fuel to the U.S. Air Corps in 1934, and gradually became one of the largest producers of aviation fuel. Because of the increased demands of the military during World War II
, Shell shared this technology with the rest of the industry. It also helped the country overcome its wartime loss of natural rubber supplied by Java and Singapore
by providing butadiene, a chemical required for the production of synthetic rubber products.