Preparation of triethyl dimethyl siloxalane

Details Preparation of triethyl dimethyl siloxalane Preparation of triethyl dimethyl siloxalane

C - Chemistry, Metallurgy

07

F

260/432.3

C07F 7/08 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1227807

ABSTRACT OF THE DISCLOSURE A process for the preparation of triethyl dimethyl siloxalane is disclosed. The process comprises admixing octamethylcyclotetrasiloxane with triethyl aluminum, optionally in the presence of an inert hydrocarbon solvent, at a temperature of 170-250°C for a period of at least 10 minutes. The molar ratio of triethyl aluminum to octamethylcyclotetrasiloxane is at least 3.9:1 and preferably 3.9-4.5:1. The siloxalane may be used as a co-catalyst in the polymerization of ethylene and/or other alpha-olefins.

458020

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