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Copolymerization of styrene and 1-butene with a novel MgCl2-supported Ti catalyst

✍ Scribed by Feng Gao; Shangan Lin

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 511 KB
Volume: 197
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.1996.021971219

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✦ Synopsis

Abstract

Copolymerization of styrene and 1‐butene was first conducted at 50°C with a novel Ti catalyst by using Al(iBu)~3~ (iBu = isobutyl) as cocatalyst. The Ti catalyst is composed of MgCl~2~/TiCl~4~/PhCOOEt/Ph~2~SiCl~2~/SiCl~4~/NdCl~x~(OR)~y~/Al(iBu)~3~ (assigned as SN‐1 catalyst), which gave mixtures of poly(1‐butene), polystyrene, and a copolymer of both monomers. The catalytic efficiency is 1 200 ‐ 4 000 g~p~/(g~Ti~ · h). The monomer reactivity ratios were estimated to be r~s~ = 0.47 and r~b~ = 29.1. The polymers produced were fractionated successively, and a styrene‐1‐butene copolymer was obtained which was characterized in detail.

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