Telechelic polyisobutylene with unsaturated end groups and with anhydride end groups

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Walch, E. and Gaymans, R.J. (1994) Telechelic polyisobutylene with unsaturated end groups and with anhydride end groups. Polymer, 35 (8). pp. 1774-1778. ISSN 0032-3861

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Abstract:Anhydride terminated polyisobutylene (PIB) oligomers were synthesized in a one- or two-step process from chlorine terminated oligomers. In the one-step process, chlorine functional oligomers were just heated in the presence of maleic anhydride (MA) for 12 h at 190°C without a catalyst. In the two-step process, the chlorine end functional groups were first converted by selective dehydrochlorination to isopropenylpoly-isobutylene end groups with t-BuOK in refluxing tetrahydrofuran during 16 h. In a second step, MA was coupled to the PIB with unsaturated end groups by reacting the oligomer with MA for 12 h at 190°C. These reactions could be followed by i.r. and n.m.r. The PIB-MA obtained had a functionality between 30% and 100%. In order to study the formation of amine functionalities, the PIB-MA was reacted with diamines. The coupling gave an imide bonding.
Item Type:Article
Copyright:© 1994 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/9729
Official URL:http://dx.doi.org/10.1016/0032-3861(94)90855-9
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Metis ID: 105308