In the Americas region, ethylene is produced by cracking either ethane, a combination of light feedstocks (ethane, propane or butane) or by cracking heavy liquid fuels (light naphtha/natural gasoline or heavy naphtha).
A colorless, odorless, nontoxic, yet flammable gas, ethylene is a constituent of natural gas and petroleum (75% Methane, 25% Ethane, Propane, and Butane). These “fossil fuels” were formed through the decomposition of organic matter over thousands of years and today provide a major energy source. Large amounts of the element may also be located in the atmospheres of Saturn and Jupiter.
Although butane is a gas at room temperature, the primary products,1-hexene, 1-octene and 1-decene, are typically clear, colorless, water-white liquids. These are normally produced and sold as pure (99+ wt.%) products, but are often blended to meet customers specifications.
The increase in PAO applications is largely driven by the stability of the PAO molecule, a highly purified ethylene derivative. This stability, along with a host of other unique performance characteristics, makes PAOs far superior to mineral oils in a variety of uses.
PAOs are specially designed chemicals that are uniquely made from alpha olefins. These stable molecules are produced by:
Steam cracking hydrocarbons to produce ultra high-purity ethylene
Ethylene oligomerization to develop 1-decene and 1-dodecene
Decene or dodecene oligomerization to form a mixture of dimers, trimers, tetramers and higher oligomers
PAOs have many advantages over mineral oils:
Greater oxidative stability
Superior volatility
Excellent low-temperature viscosities
Consistent, quality basestock
Extremely high viscosity index
Excellent pour points
Freedom from impurities