Preparation of triethyl dimethyl siloxalane

Details Preparation of triethyl dimethyl siloxalane Preparation of triethyl dimethyl siloxalane

1984-06-27

1986-09-16

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Aluminum containing

C07F 506

Patent

active

046123822

ABSTRACT:
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.degree.-250.degree. 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.

REFERENCES:
patent: 2897220 (1959-07-01), Jenkner
patent: 3657159 (1972-04-01), Vandenberg
patent: 3711305 (1973-01-01), Anderson
patent: 3787323 (1974-01-01), Aishima et al.
patent: 3969332 (1976-07-01), Gloriod et al.
patent: 4036867 (1977-07-01), Piekarski et al.
patent: 4324877 (1982-04-01), Ueno et al.

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