How are Polyalphaolefins (PAOs) created according to the description of chemical synthesis?

By oligomerizing alpha-olefins

Polyalphaolefins (PAOs), a key class of synthetic base stocks, are created through a precise chemical process known as oligomerization applied to alpha-olefins. Oligomerization is a specific type of polymerization where a small number of monomer units (in this case, alpha-olefins) are joined together to form a larger, highly uniform molecule. This controlled building process ensures that the resulting PAO molecules are highly consistent in size and structure, which is the core reason they exhibit superior, predictable performance characteristics, particularly regarding thermal stability and viscosity maintenance, when compared to the inherently variable molecules found in crude oil derived mineral oils.