Poly(β‐pinenes) carrying one, two, or three functional end groups. I. The effect of reaction conditions on the polymerization of β‐pinene

Abstract β‐Pinene was polymerized with H 2 O/BCl 3 (protic) and p ‐dicumyl chloride and sym ‐tricumyl chloride (nonprotic) inifer systems in CH 2 Cl 2 or CH 2 Cl 2 / n ‐C 6 H 14 solvents from −10 to −70°C. The effect of solvent polarity, temperature, and monomer and inifer concentration on conversions and molecular weights was investigated. Low conversions and molecular weights, M̄ n = 1300–2500, obtained under these conditions suggest rapid termination.