Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 29, 2009
Patent Application Number
12002482
Date Filed
December 17, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A process to remove metal contaminants from a hydrocarbon solution of polyethylene is disclosed. The process comprises adding a primary alcohol and a β-diketone to a solution of polyethylene at a temperature within the range of 120° C. to 300° C. and contacting the solution with basic alumina. The process removes metal contaminants and minimizes degradation and condensation products, which can have a detrimental effect on polyethylene properties. The process provides polyethylene with low metal residues and good properties.
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