Deactivation of aluminum alkyls
AssigneeAristech Chemical Corporation
InventorsRandall K. Bretches, Andrew J. Sivak, Russell L. Stainfield
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Abstract
Aluminum alkyls are deactivated in a spent hydrocarbon carrier for an olefin polymerization system by the addition of effective amounts of triglycerides.
Claims16
Method of deactivating alkylaluminum catalyst in a hydrocarbon carrier comprising reacting said alkylaluminum catalyst with a triester of glycerol wherein said ester group has independently up to about 24 carbon atoms, in an amount sufficient to effect deactivation.
Method of treating an olefin polymerization reaction product which includes a hydrocarbon solvent, a polyolefin product, and residual triethyl aluminum, comprising separating the polyolefin product from the hydrocarbon solvent and triethyl aluminum, adding to the solvent an amount of a triester of glycerol, each ester group of said triester of glycerol having independently up to about 24 carbon atoms effective to neutralize the triethyl aluminum, and recycling the solvent for re-use in the olefin polymerization reaction.
Dependencies are inferred from the claim text.