Currently, polyisobutene is produced industrially using Brönsted or Lewis acids like AlCl₃, BCl₃ and BF₃ as cationic initiators, together with water and alcohols as co-initiators in a temperature range between -20°C and -80°C. As an alternative, a new catalyst system has been developed, which allows the production of polyisobutene at room temperature. Examples of such catalysts are nitrile stabilized molybdenum complexes like [MoCl(MeCN)₅][B(C₆F₅)₄]₂ and [MoO(MeCN)₅][B(C₆F₅)₄]₂. The “highly reactive” polyisobutene produced with this new method exhibits low PDIs as well as a high content of terminal double bonds.
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Currently, polyisobutene is produced industrially using Brönsted or Lewis acids like AlCl₃, BCl₃ and BF₃ as cationic initiators, together with water and alcohols as co-initiators in a temperature range between -20°C and -80°C. As an alternative, a new catalyst system has been developed, which allows the production of polyisobutene at room temperature. Examples of such catalysts are nitrile stabilized molybdenum complexes like [MoCl(MeCN)₅][B(C₆F₅)₄]₂ and [MoO(MeCN)₅][B(C₆F₅)₄]₂. The “highly reac...
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