PREPARATION OF SYNDIOTACTIC POLYOLEFINS BY USING METALLOCENE CATALYSTS

被引：56

作者：

ASANUMA, T

NISHIMORI, Y

ITO, M

UCHIKAWA, N

SHIOMURA, T

机构：

[1] Osaka Research Laboratory, Mitsui Toatsu Chemicals, Inc, Takaishi, Osaka

来源：

POLYMER BULLETIN | 1991年 / 25卷 / 05期

关键词：

D O I：

10.1007/BF00293515

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyolefins having syndiotactic structure were obtained by using 1-methyl-1-ethylidene-(cyclopentadienyl-1'-fluorenyl)zirconium dichloride and methylaluminoxane as a catalyst. 1-Butene and 4-methyl-1-pentene gave crystalline polymers having syndiotactic structure, while 1-pentene, 1-hexene and 1-octene gave noncrystalline polymers having syndiotactic structure. The identification of syndiotactic and isotactic polyolefins was made by C-13-NMR, X-ray diffraction, and differential scanning calorimetry.

引用

页码：567 / 570

页数：4

共 9 条

[1] C-13 NMR-STUDY OF THE CHAIN DYNAMICS OF POLYPROPYLENE AND POLY(1-BUTENE) AND THE STEREOCHEMICAL DEPENDENCE OF THE SEGMENTAL MOBILITY [J].