| abstract |
Polyisoolefins are produced by isoolefins, optionally with conjugated or non-conjugated dienes and / or cationically polymerizable, mono- or polyunsaturated compounds at temperatures from -100 ° C. to +100 ° C. and pressures from 0.1 to 100 bar in solution, polymerized in suspension or in the gas phase in the presence of initiator systems consisting of components A), B) and / or C): DOLLAR AA) [Cp * ¶2¶MH¶2¶] ¶2¶; (Cp *) ¶2¶MH¶2¶ DOLLAR AB) BR · 3 · R · 4 · R · 5 · and / or DOLLAR AC) [CPh¶3¶] * [BR · 6 · R · 7 · R · 8 · R · 9 ·] · - ·, DOLLAR A where DOLLAR A Cp * is an optionally substituted cyclopentadienyl radical, DOLLAR AM can stand for titanium, zirconium and hafnium and DOLLAR AR · 3 ·, R · 4 ·, R · 5 · , R · 6 ·, R · 7 ·, R · 8 · and R · 9 · for C¶1¶-C¶10¶-alkyl- or C¶3¶-C¶10¶-cycloalkyl- or C¶6 ¶-C¶8¶ aryl groups, which can be substituted one or more times by halogen. |