Organic compounds -- part of the class 532-570 series – Organic compounds – Aluminum containing
Patent
1996-07-12
1998-03-24
Nazario-Gonzalez, Porfirio
Organic compounds -- part of the class 532-570 series
Organic compounds
Aluminum containing
556175, 556187, 556189, 502104, 502103, 502107, 502117, 526160, 526943, C07F 506, B01J 3100
Patent
active
057314519
ABSTRACT:
A process is disclosed for forming an aluminoxane composition comprising methylaluminoxane by mixing trimethylaluminum, or a mixture of trimethylaluminum and one or more other trihydrocarbylaluminum compounds, with an organoaluminum compound containing a trialkylsiloxide moiety and then oxygenating the mixture to form the aluminoxane. Oxygenation can be carried out by controlled hydrolysis or by treatment with an organic compound containing carbon-oxygen bonds, such as carbon dioxide. A preferred trialkylsiloxide moiety is of the formula --OSi(CH.sub.3).sub.3, such as in a compound of the formula (CH.sub.3).sub.2 AlOSi(CH.sub.3).sub.3.
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C.C. Landry et al., "Siloxy-Substituted Alumoxanes: Synthesis from Polydialkylsiloxanes and Trimethylaluminum, and Application as Aluminosilicate Precursors", J. Mater. Chem., 1993, 3(6), 597-602.
A.W. Apbleet et al., "Synthesis and Characterization of Triethylsiloxy-Substituted Alumoxanes: Their Structural Relationship to the Minerals Boehmite and Diaspore", Chem. Mater. 1992, 4, 167-182.
Malpass Dennis B.
Palmaka Stanley W.
Smith Gregory M.
Akzo Nobel nv
Fennelly Richard P.
Morris Louis A.
Nazario-Gonzalez Porfirio
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