Cationic polymerization of isobutylene by AlCl3/ether complexes in non-polar solvents: Effect of ether structure on the selectivity of β-H elimination

• Published in: Polymer (Guilford) Vol. 54; no. 9; pp. 2235 - 2242
• Main Authors: Shiman, Dmitriy I., Vasilenko, Irina V., Kostjuk, Sergei V.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 19.04.2013; Elsevier
• Subjects: Applied sciences; Cationic polymerization; ethers; Exact sciences and technology; Highly reactive polyisobutylene; Isobutylene; molecular weight; Organic polymers; Physicochemistry of polymers; Polymerization; polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; solvents; temperature; toluene; Highly reactive polyisobutylene; Isobutylene; Cationic polymerization; Lewis acid; Ether; End group; Molecular structure; Priming activity; Experimental study; Solution polymerization; Structure processing relationship; Isobutene polymer; Apolar solvent; Reaction mechanism; Aluminium chloride; Secondary alcohol; Cationic catalyst

The cationic polymerization of isobutylene co-initiated by a number of complexes of AlCl3 with linear (Et2O, Bu2O, Am2O, Hex2O, MeOPh) and branched (iPr2O, tBuOMe) ethers in toluene or CH2Cl2 at −20 °C has been investigated. Among them, the complexes with ethers of moderate basicity (AlCl3 × OBu2 an...