{TAIL ~ A process} for obtaining a tertiary olefin, e.g. isobutylene in a very pure state by decomposing the corresponding ether, {HEAD ~ e.g. methyl tert} 
{ TAIL ~ A process } for obtaining a tertiary olefin , e.g. isobutylene in a very pure state by decomposing the corresponding ether , { HEAD ~ e.g. methyl tert }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD