Synthesis of internal electron donors for a novel Ziegler-Natta catalyst system

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Helsinki University of Technology | Diplomityö
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Date

2008

Department

Kemian laitos

Major/Subject

Orgaaninen kemia

Mcode

Kem-4

Degree programme

Language

en

Pages

viii + 63 s. + liitt.

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Abstract

The aim of this study was to develop a synthesis route for (+)-L-tartrate and (+/-)-malate derivatives. These were to function as internal electron donors in the synthesis of novel Ziegler-Natta polypropylene catalysts, developed by Borealis Polymers Oy. In the first part of this work the development of the production of polyolefins, especially polypropylene, with Ziegler-Natta catalysts is presented. The catalyst and the polymerisation chemistry is described, especially the effect of the electron donors. The second part of the work presents the starting materials, (+)-L-tartaric acid, (+)-diethyl-L-tartrate, (+/-)-malic acid and DL-diethyl malate. Also the theory of the reactions mechanisms; esterification, ether synthesis and ring-closing metathesis, are described. Finally, the results of the syntheses are presented with a discussion of the results.

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Supervisor

Koskinen, Ari

Thesis advisor

Denifl, Peter

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Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-2020120554756

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[dipl] Teknillinen korkeakoulu / TKK