𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Zirconium catalysts for the syndiotactic polymerization of styrene

✍ Scribed by Pasquale Longo; Antonio Proto; Leone Oliva

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
165 KB
Volume
15
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Several papers report on the syndiotactic specific polymerization of styrene promoted by catalysts consisting of a variety of Ti compounds and methylaluminoxane (MAO) I-').

Syndiotactic polystyrene was also produced in the presence of tetrabenzylzirconium-Tab. 1 shows the results of some polymerizations of styrene promoted by catalytic Comparative examples performed in the presence of titanium based catalysts are also MAO". systems consisting of different zirconium compounds and methylaluminoxane. ieported.

' )

This run was performed using 2,5. toluene and 15 mL of styrene. f, Not determined. rnol of zirconium compound, 5 . rnol of mol of CpTiCI,, 7 3 . lo-, mol of MAO, 50 mL of mol of TiBz,, 2,5. lo-' mol of MAO, 25 mL of

πŸ“œ SIMILAR VOLUMES

Polymer-supported titanium catalysts for
Polymer-supported titanium catalysts for syndiotactic polymerization of styrene
✍ Guangqian Yu; Hui Chen; Xuequan Zhang; Zijiang Jiang; Baotong Huang πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 339 KB πŸ‘ 2 views

Poly(styrene-co-acrylamide)(PSAm)-titanium complexes (PSAm \* Ti) were prepared and characterized. It is found that the coordination number of acrylamide (Am) to T i in the complexes is strongly dependent on Am content in PSAm, but not on [Am]/[Ti] ratio in the feed. The infrared and x-ray photoelec

Syndiotactic polymerization of styrene w
Syndiotactic polymerization of styrene with cyclopentadienyltribenzyloxytitanium/methylaluminoxane catalyst
✍ Qing Wu; Zhong Ye; Shangan Lin πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 285 KB

## Abstract Syndiotactic polystyrene was efficiently prepared in the presence of a homogeneous catalyst composed of (Ξ·^5^‐cyclopentadienyl)tribenzyloxytitanium and methylaluminoxane (MAO) as a cocatalyst. Influences of various polymerization conditions, e.g., [Ti]. [MAO], [St], temperature and the