Styryl-Telechelic Polyisobutylenes. I. Synthesis of Linear and Tri-Arm Star Styryl-Telechelic Polyisobutylenes
- 1 March 1984
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 21 (3) , 307-318
- https://doi.org/10.1080/00222338408069465
Abstract
New linear and three-arm star polyisobutylenes carrying two and three terminal styryl endgroups, i.e., Fn = 2.0 and 3.0, respectively, have been prepared. The synthesis of these styryl-telechelic polyisobutylenes involved Friedel-Crafts alkylation by linear and/or three-arm star polyisobutylenes carrying tertiary chlorine endgroups of (2-bromoethyl)benzene or /β-bromoisopropylbenzene followed by de-hydrobromination. According to model studies, 1H-NMR, and UV spectroscopy, the conversions are essentially quantitative. These new terminally di- and tri-styrenated polyisobutylenes may be useful for the preparation of block copolymers and as cross-linking materials.Keywords
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