The origins of the petrochemical industry can be traced back to the
1920s when simple organic chemicals such as ethanol and isopropanol were
first prepared on an industrial scale from by-products (ethylene and
propylene) of oil refining. This oil-based petrochemical industry, with
lower olefms and aromatics as the key building blocks, rapidly developed
into the enormous industry it is today. A multitude of products that are
indispensible to modern day society, from plastics to pharmaceuticals,
are derived from oil and natural gas-based hydro- carbons. The industry
had its heyday in the '50s and '60s when predictions of future growth
rates tended to be exponential curves. However, two developments that
took place in the early '70s disturbed this simplistic and optimistic
view of the future. Firstly, the publication of the report for the Cub
of Rome on the 'Limits to Growth' emphasized the finite nature of
non-renewable fossil fuel resources. Secondly, the Oil Crisis of 1973
emphasized the vulnerability of an energy and chemicals industry that is
based largely on a single raw material.