THE MECHANISM OF THE STEREOSPECIFIC POLYMERIZATION OF CONJUGATED DIENES - NEW INSIGHTS AND OPEN QUESTIONS

被引：0
|
作者：
PORRI, L [1 ]
GIARRUSSO, A [1 ]
RICCI, G [1 ]
机构：
[1] IST CHIM MACROMOLEC,I-20133 MILAN,ITALY
来源：
VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A & SERIYA B | 1994年 / 36卷 / 10期
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中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The mechanism controlling stereoregulation during the polymerization of dienes effected by Ziegler-Natta catalysts is discussed. We also elaborate on the structure of catalytic centers and the mechanism by which the monomer is coordinated to the allyl-metal bond and incorporated into it. The causes giving rise to anti-sin isomerization and formation of cis, trans, and 1,2 units in the polymer and specific features of the catalysis that result in the formation of iso- and syndiotactic structures in polydienes are considered.
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页码：1698 / 1711
页数：14
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