Organic compounds -- part of the class 532-570 series – Organic compounds – Aluminum containing
Patent
1996-10-25
1998-07-07
Nazario-Gonzalez, Porfirio
Organic compounds -- part of the class 532-570 series
Organic compounds
Aluminum containing
556180, 556187, 502103, 502117, 502152, 526160, 526943, C07F 506, B01J 3106
Patent
active
057771430
ABSTRACT:
A hydrocarbon-soluble alkylaluminoxane composition, such as, methylaluminoxane or even a modified methylaluminoxane, can be prepared by preparing an alkylaluminoxane precursor via non-hydrolytic means, such as, by treating at least one trialkylaluminum compound with a compound containing an oxygen-carbon bond, adding to that precursor an effective amount of an organoaluminum compound which prevents formation of insoluble species, such as, a trialkylaluminum compound where each alkyl group contains two or more carbon atoms, and converting that modified precursor to an alkylaluminoxane, such as, by thermolysis. In a distinct embodiment of the invention, if an insoluble methylaluminoxane product is formed using the non-hydrolytic technique, it can be solubilized by treatment with a solubilizing amount of an alkylaluminoxane, prepared by either hydrolytic or non-hydrolytic means, wherein the alkyl moieties contain two or more carbon atoms. These aluminoxane products show high solubility in aliphatic hydrocarbons and improved thermal stability in aromatic hydrocarbons.
REFERENCES:
patent: 5066631 (1991-11-01), Sangokoya et al.
patent: 5480848 (1996-01-01), Geerts
Malpass Dennis B.
Palmaka Stanley W.
Rogers Jonathan S.
Smith Gregory M.
Akzo Nobel nv
Fennelly Richard P.
Morris Louis A.
Nazario-Gonzalez Porfirio
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