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Ethylene-hexene-1 copolymers through modified phillips catalysis

✍ Scribed by R. Spitz; B. Florin; A. Guyot

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
295 KB
Volume
15
Category
Article
ISSN
0014-3057

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✦ Synopsis

Copolymerization of ethylene and hexene has been carried out using Phillips' catalysts (chromium oxide deposited on silica) modified with small amounts of triethylaluminium [AI(C2Hs)3], without solvent other than hexene itself and under constant ethylene pressure. The copolymers are highly disperse, not only in molecular weight but also in composition: the amount of hexene incorporated in the solid fraction is always less than 4%. Most Of the hexene units are in a waxy fraction, which may account for a very high proportion of the copolymer produced. The behaviour of the catalyst is strongly dependent upon the amount of AI(C2Hs) 3 used.

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