本工作研究了在己烧中Ti(OBu)_4-(i-Bu)_3Al催化丁二烯的聚合规律。所得聚合物的1,2-链节含量为52—75％。 前报指出,在己烧中改变TiCl_(4-n)—(OBu)n中n的数目(n ≤4)是获取1,2-链节含量不同的聚丁二烯的新途径。继n=2之后,我们又研究了n=4,即Ti(OBu)_4的催化聚合行为。发现用己烷作溶剂得到的1,2-聚丁二烯与用芳烃作溶剂而得到的不同,1,2-链节含量为52—75％。 This work investigated the polymerization of butadiene catalyzed by Ti (OBu) _4- (i-Bu) _3Al. The 1,2-mer content of the resulting polymer was 52-75%. The former report pointed out that changing the number of n in TiCl_ (4-n) - (OBu) n (n ≤ 4) has been a new way to obtain polybutadiene with different content of 1,2-mer. Following n = 2, we again investigated n = 4, the catalytic polymerization behavior of Ti (OBu) 4. 1,2-polybutadiene obtained by using hexane as a solvent was found to have a content of 1,2-linkages of 52 to 75%, unlike that obtained by using aromatic hydrocarbon as a solvent.