Non‐Hydrolytic Route to Aluminoxane‐Type Derivative for Metallocene Activation towards Olefin Polymerisation | Zendy

Dalet Thomas | Zendy; Cramail Henri | Zendy; Deffieux Alain | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Non‐Hydrolytic Route to Aluminoxane‐Type Derivative for Metallocene Activation towards Olefin Polymerisation

Author(s) -

Dalet Thomas,

Cramail Henri,

Deffieux Alain

Publication year - 2004

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.200400096

Subject(s) - chemistry , methylaluminoxane , toluene , polymer chemistry , monomer , metallocene , polymerization , hydrolysis , benzoic acid , olefin fiber , absorption spectroscopy , photochemistry , catalysis , organic chemistry , polymer , physics , quantum mechanics

Summary: Access to methylaluminoxane‐type derivatives by a non‐hydrolytic route is described. The procedure involves the reaction between trimethylaluminium (TMA) and benzoic acid (BA) at temperatures comprised from 20 to 100 °C in toluene. The structure of the different aluminic derivatives formed for different ratios R = TMA/BA as well as the reaction pathways leading to these products were investigated by 1 H NMR spectroscopy at different temperatures. The monomeric and/or oligomeric “Me 2 AlOAlMe 2 ” species issued from the reaction between BA and TMA were found to methylate and then activate (cationize) rac ‐Et(Ind) 2 ZrCl 2 as shown by UV/visible spectroscopy analysis. This is further confirmed by successful hex‐1‐ene polymerisations carried out in the presence of such activators.UV/visible absorption spectrum of rac ‐Et(Ind) 2 ZrCl 2 in toluene recorded in the presence of various amounts of MAO 20° ( R = 3).

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research