by which the eas product is produced the term u201c gem dimethyl carbons u201d as used herein refers to the two methyl carbons alpha to the carbenium ion or the chloride bonded carbon of the polyolefin polymer chain end as depicted in the structure below the term u201c hydrocarbyl u201d refers to an organic radical primarily composed of carbon and hydrogen which may be aliphatic alicyclic aromatic or combinations thereof e g aralkyl or alkaryl such hydrocarbyl groups may also contain aliphatic unsaturation i e olefinic or acetylenic unsaturation and may contain minor amounts of heteroatoms such as oxygen or nitrogen or halogens such as chlorine the term u201c hindered secondary or tertiary amine u201d as used herein refers to a compound that is appropriately substituted such that it is sufficiently sterically hindered to be not fully complexed with the lewis acid yet sufficiently sterically hindered to allow its reaction with the carbenium ion preferably the hindered amine is a tertiary amine the term u201c lewis acid u201d as used herein refers to a compound that can accept a pair of electrons to form a covalent bond the term u201c living polymerization u201d as used herein refers to the polymerizations.