Method of making aluminum alkyls
AssigneeEthyl Corporation
InventorSteven P. Diefenbach
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Abstract
A method of making trimethylaluminum wherein an aluminum trialkyl having at least two carbon atoms in the alkyl group is reacted with a methyl halide in the presence of a bismuth catalyst to form trimethylaluminum and an alkyl halide. A hydrocarbon solvent provides increased reaction rates.
Claims22
A method of effecting an alkyl exchange reaction, comprising reacting trialkylaluminum having at least two carbon atoms in the alkyl group with methyl halide in the presence of a bismuth-based catalyst to form an alkyl halide having at least two carbon atoms and an alkyl aluminum product containing at least some aluminum to methyl bonds, said bismuth-based catalyst comprising a bismuth compound which is capable of forming an alkyl bismuth bond or an aryl bismuth bond in the reaction.
A method of making trimethylaluminum, comprising the following catalyzed exchange reaction:
- ##STR2## wherein R=C.sub.2 -C.sub.4 alkyl group
- X=bromine or chlorine
- Catalyst includes bismuth trichloride or triphenyl bismuth or bismuth trihalide.
A method of making trimethylaluminum, comprising reacting triethylaluminum and methyl bromide in the presence of a bismuth chloride or triphenyl bismuth catalyst at a temperature of about 115.degree. C. for at least one hour.
Dependencies are inferred from the claim text.