Organic compounds -- part of the class 532-570 series – Organic compounds – Aluminum containing
Patent
1998-03-18
2000-01-11
Nazario-Gonzalez, Porfirio
Organic compounds -- part of the class 532-570 series
Organic compounds
Aluminum containing
556179, 556180, 502103, 502117, 502152, 526160, 526943, C07F 506, C07F 1700
Patent
active
060138203
ABSTRACT:
The reaction between an alkylaluminum compound such as trimethylaluminum and carbon dioxide or an organic carbonyl reagent such as benzoic acid or benzophenone is facilitated and accelerated by contacting these reactants in the presence of an inert organic solvent/diluent and a catalytic quantity of water. The process is preferably conducted using continuous feeds of the components to the reaction zone. The proportions of (I) and (ii) fed to the reactor are maintained such that there are about 1.4 to about 2.2 moles of alkylaluminum per mole of oxygen atoms as CO.sub.2 or the organic carbonyl reagent, and the weight ratio of aluminum alkyl to the solvent/diluent is preferably in the range ca. 20:80 to ca. 60:40. Polyalkylaluminoxanes formed in the process can have better solubility in paraffinic or cycloparaffinic hydrocarbons, and also greater storage stability.
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Albemarle Corporation
Nazario-Gonzalez Porfirio
Pippenger Philip M.
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