| 摘要 |
PROBLEM TO BE SOLVED: To carry out the polymerization of an olefin at a high polymerization degree in a high yield by using a heteropoly acid or its derivative as a catalyst. SOLUTION: (A) A 2-30C olefin or its derivative is brought into contact with (B) a partially or a completely neutralized heteropoly acid to afford a polymer having at least about 6 polymerization degree. Furthermore, the component B is preferably phosphotungstic acid (especially Cs2.5 H0.5 PW12 O40 ), silicotungstic acid, phosphomolybdic acid or silicomolybdic acid and the component A is preferably isobutylene. The resultant polymer is preferably polyisobutylene having 300-20,000 Mn and the total content of the terminal vinylidene and theβ-isomer (II) of the polymer is preferably at least 60%.
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