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Synthesis of the block copolymer of styrene and 1-butene with a novel supported Ti-catalyst

✍ Scribed by Feng Gao; Shangan Lin

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 441 KB
Volume: 34
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199610)34:14<2909::aid-pola7>3.0.co;2-l

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✦ Synopsis

The present investigation deals with sequential block copolymerization of styrene and 1butene with a novel MgC1,-supported TiC14 catalyst modified with a rare earth compound NdCl,(OR), (SN-1 catalyst), which was developed in our laboratory. T h e catalytic activities are 1300-2500 g/g * Ti * h. Analyses of copolymers with solvent extraction, '"C-NMR, WAXD, GPC, and DSC was performed. T h e results indicate that the SN-1 catalyst selectively gave crystalline diblock copolymers of isotactic polystyrene and isotactic poly(1-butene), with the styrene unit content of 30-60 mol %.

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