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6656398 
Journal Article 
STEREOSPECIFIC POLYMERIZATION OF STYRENE GIVING THE SYNDIOTACTIC POLYMER 
Ishihara, N; Kuramoto, M; Uoi, M; , 
1988 
1 
Macromolecules
ISSN: 0024-9297
EISSN: 1520-5835 
AMER CHEMICAL SOC 
WASHINGTON 
21 
12 
3356-3360 
English 
WOS:A1988R497800003 
A mixture of titanium compounds (TiCl4, Ti(OEt)4, or (η-C5H,5)TiCl3) with methylaluminoxane catalyzes the polymerization of styrene, even above room temperature, to the pure syndiotactic polystyrene, which has a narrow molecular weight distribution (Mw/Mn= 2). Pure syndiotactic polymers are also obtained with ring-substituted styrenes. Monomer reactivity is enhanced by electron-releasing substituents on the aromatic ring. © 1988, American Chemical Society. All rights reserved.