P - tert - octylphenol (shorten by PTOP), the alkylation product of phenol with diisobutylene(shorten by DIB), has been largely applying in varied fields such as rubbers, oil additives and so on.
The polymerised product (mainly diisobutylene ) can be hydrogenated to be used as gasoline blending agent replacing MTBE, or separated as fine chemical feedstock.